mirror of
https://github.com/jellyfin/jellyfin.git
synced 2025-11-04 03:27:21 -05:00
1682 lines
63 KiB
C#
1682 lines
63 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.Configuration;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.MediaInfo;
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namespace MediaBrowser.MediaEncoding.Encoder
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{
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public class EncodingHelper
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{
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private readonly CultureInfo _usCulture = new CultureInfo("en-US");
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private readonly IMediaEncoder _mediaEncoder;
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private readonly IServerConfigurationManager _config;
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private readonly IFileSystem _fileSystem;
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private readonly ISubtitleEncoder _subtitleEncoder;
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public EncodingHelper(IMediaEncoder mediaEncoder, IServerConfigurationManager config, IFileSystem fileSystem, ISubtitleEncoder subtitleEncoder)
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{
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_mediaEncoder = mediaEncoder;
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_config = config;
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_fileSystem = fileSystem;
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_subtitleEncoder = subtitleEncoder;
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}
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public string GetH264Encoder(EncodingJobInfo state, EncodingOptions encodingOptions)
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{
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var defaultEncoder = "libx264";
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// Only use alternative encoders for video files.
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// When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
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// Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
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if (state.VideoType == VideoType.VideoFile)
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{
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var hwType = encodingOptions.HardwareAccelerationType;
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if (string.Equals(hwType, "qsv", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(hwType, "h264_qsv", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_qsv", defaultEncoder);
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}
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if (string.Equals(hwType, "nvenc", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_nvenc", defaultEncoder);
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}
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if (string.Equals(hwType, "h264_omx", StringComparison.OrdinalIgnoreCase))
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{
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return GetAvailableEncoder("h264_omx", defaultEncoder);
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}
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if (string.Equals(hwType, "vaapi", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(encodingOptions.VaapiDevice))
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{
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if (IsVaapiSupported(state))
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{
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return GetAvailableEncoder("h264_vaapi", defaultEncoder);
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}
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}
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}
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return defaultEncoder;
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}
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private string GetAvailableEncoder(string preferredEncoder, string defaultEncoder)
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{
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if (_mediaEncoder.SupportsEncoder(preferredEncoder))
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{
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return preferredEncoder;
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}
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return defaultEncoder;
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}
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private bool IsVaapiSupported(EncodingJobInfo state)
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{
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var videoStream = state.VideoStream;
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if (videoStream != null)
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{
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// vaapi will throw an error with this input
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// [vaapi @ 0x7faed8000960] No VAAPI support for codec mpeg4 profile -99.
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if (string.Equals(videoStream.Codec, "mpeg4", StringComparison.OrdinalIgnoreCase))
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{
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if (videoStream.Level == -99 || videoStream.Level == 15)
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{
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return false;
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}
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}
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}
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return true;
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}
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/// <summary>
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/// Gets the name of the output video codec
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/// </summary>
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public string GetVideoEncoder(EncodingJobInfo state, EncodingOptions encodingOptions)
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{
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var codec = state.OutputVideoCodec;
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if (!string.IsNullOrEmpty(codec))
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{
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if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase))
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{
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return GetH264Encoder(state, encodingOptions);
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}
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if (string.Equals(codec, "vpx", StringComparison.OrdinalIgnoreCase))
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{
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return "libvpx";
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}
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if (string.Equals(codec, "wmv", StringComparison.OrdinalIgnoreCase))
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{
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return "wmv2";
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}
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if (string.Equals(codec, "theora", StringComparison.OrdinalIgnoreCase))
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{
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return "libtheora";
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}
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return codec.ToLower();
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}
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return "copy";
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}
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/// <summary>
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/// Gets the user agent param.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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public string GetUserAgentParam(EncodingJobInfo state)
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{
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string useragent = null;
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state.RemoteHttpHeaders.TryGetValue("User-Agent", out useragent);
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if (!string.IsNullOrWhiteSpace(useragent))
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{
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return "-user-agent \"" + useragent + "\"";
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}
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return string.Empty;
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}
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public string GetInputFormat(string container)
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{
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if (string.Equals(container, "mkv", StringComparison.OrdinalIgnoreCase))
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{
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return "matroska";
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}
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if (string.Equals(container, "ts", StringComparison.OrdinalIgnoreCase))
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{
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return "mpegts";
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}
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return container;
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}
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public string GetDecoderFromCodec(string codec)
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{
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if (string.Equals(codec, "mp2", StringComparison.OrdinalIgnoreCase))
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{
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return null;
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}
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if (string.Equals(codec, "aac_latm", StringComparison.OrdinalIgnoreCase))
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{
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return null;
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}
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return codec;
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}
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/// <summary>
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/// Infers the audio codec based on the url
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/// </summary>
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/// <param name="url">The URL.</param>
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/// <returns>System.Nullable{AudioCodecs}.</returns>
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public string InferAudioCodec(string url)
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{
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var ext = Path.GetExtension(url);
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if (string.Equals(ext, ".mp3", StringComparison.OrdinalIgnoreCase))
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{
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return "mp3";
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}
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if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
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{
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return "aac";
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}
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if (string.Equals(ext, ".wma", StringComparison.OrdinalIgnoreCase))
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{
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return "wma";
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}
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if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
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{
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return "vorbis";
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}
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if (string.Equals(ext, ".oga", StringComparison.OrdinalIgnoreCase))
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{
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return "vorbis";
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}
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if (string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
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{
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return "vorbis";
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}
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if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
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{
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return "vorbis";
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}
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if (string.Equals(ext, ".webma", StringComparison.OrdinalIgnoreCase))
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{
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return "vorbis";
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}
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return "copy";
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}
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/// <summary>
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/// Infers the video codec.
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/// </summary>
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/// <param name="url">The URL.</param>
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/// <returns>System.Nullable{VideoCodecs}.</returns>
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public string InferVideoCodec(string url)
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{
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var ext = Path.GetExtension(url);
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if (string.Equals(ext, ".asf", StringComparison.OrdinalIgnoreCase))
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{
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return "wmv";
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}
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if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
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{
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return "vpx";
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}
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if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
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{
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return "theora";
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}
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if (string.Equals(ext, ".m3u8", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ts", StringComparison.OrdinalIgnoreCase))
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{
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return "h264";
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}
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return "copy";
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}
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public int GetVideoProfileScore(string profile)
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{
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var list = new List<string>
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{
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"Constrained Baseline",
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"Baseline",
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"Extended",
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"Main",
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"High",
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"Progressive High",
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"Constrained High"
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};
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return Array.FindIndex(list.ToArray(), t => string.Equals(t, profile, StringComparison.OrdinalIgnoreCase));
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}
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public string GetInputPathArgument(EncodingJobInfo state)
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{
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var protocol = state.InputProtocol;
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var mediaPath = state.MediaPath ?? string.Empty;
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var inputPath = new[] { mediaPath };
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if (state.IsInputVideo)
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{
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if (!(state.VideoType == VideoType.Iso && state.IsoMount == null))
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{
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inputPath = MediaEncoderHelpers.GetInputArgument(_fileSystem, mediaPath, state.InputProtocol, state.IsoMount, state.PlayableStreamFileNames);
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}
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}
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return _mediaEncoder.GetInputArgument(inputPath, protocol);
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}
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/// <summary>
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/// Gets the audio encoder.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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public string GetAudioEncoder(EncodingJobInfo state)
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{
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var codec = state.OutputAudioCodec;
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if (string.Equals(codec, "aac", StringComparison.OrdinalIgnoreCase))
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{
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return "aac -strict experimental";
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}
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if (string.Equals(codec, "mp3", StringComparison.OrdinalIgnoreCase))
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{
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return "libmp3lame";
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}
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if (string.Equals(codec, "vorbis", StringComparison.OrdinalIgnoreCase))
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{
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return "libvorbis";
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}
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if (string.Equals(codec, "wma", StringComparison.OrdinalIgnoreCase))
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{
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return "wmav2";
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}
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return codec.ToLower();
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}
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/// <summary>
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/// Gets the input argument.
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/// </summary>
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public string GetInputArgument(EncodingJobInfo state, EncodingOptions encodingOptions)
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{
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var request = state.BaseRequest;
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var arg = string.Format("-i {0}", GetInputPathArgument(state));
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if (state.SubtitleStream != null && request.SubtitleMethod == SubtitleDeliveryMethod.Encode)
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{
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if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
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{
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if (state.VideoStream != null && state.VideoStream.Width.HasValue)
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{
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// This is hacky but not sure how to get the exact subtitle resolution
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double height = state.VideoStream.Width.Value;
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height /= 16;
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height *= 9;
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arg += string.Format(" -canvas_size {0}:{1}", state.VideoStream.Width.Value.ToString(CultureInfo.InvariantCulture), Convert.ToInt32(height).ToString(CultureInfo.InvariantCulture));
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}
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var subtitlePath = state.SubtitleStream.Path;
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if (string.Equals(Path.GetExtension(subtitlePath), ".sub", StringComparison.OrdinalIgnoreCase))
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{
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var idxFile = Path.ChangeExtension(subtitlePath, ".idx");
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if (_fileSystem.FileExists(idxFile))
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{
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subtitlePath = idxFile;
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}
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}
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arg += " -i \"" + subtitlePath + "\"";
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}
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}
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if (state.IsVideoRequest)
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{
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if (GetVideoEncoder(state, encodingOptions).IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1)
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{
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var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && request.SubtitleMethod == SubtitleDeliveryMethod.Encode;
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var hwOutputFormat = "vaapi";
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if (hasGraphicalSubs)
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{
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hwOutputFormat = "yuv420p";
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}
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arg = "-hwaccel vaapi -hwaccel_output_format " + hwOutputFormat + " -vaapi_device " + encodingOptions.VaapiDevice + " " + arg;
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}
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}
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return arg.Trim();
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}
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/// <summary>
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/// Determines whether the specified stream is H264.
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/// </summary>
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/// <param name="stream">The stream.</param>
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/// <returns><c>true</c> if the specified stream is H264; otherwise, <c>false</c>.</returns>
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public bool IsH264(MediaStream stream)
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{
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var codec = stream.Codec ?? string.Empty;
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return codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
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codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
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}
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public string GetVideoBitrateParam(EncodingJobInfo state, string videoCodec)
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{
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var bitrate = state.OutputVideoBitrate;
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if (bitrate.HasValue)
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{
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if (string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase))
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{
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// With vpx when crf is used, b:v becomes a max rate
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// https://trac.ffmpeg.org/wiki/vpxEncodingGuide. But higher bitrate source files -b:v causes judder so limite the bitrate but dont allow it to "saturate" the bitrate. So dont contrain it down just up.
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return string.Format(" -maxrate:v {0} -bufsize:v ({0}*2) -b:v {0}", bitrate.Value.ToString(_usCulture));
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}
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if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
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{
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return string.Format(" -b:v {0}", bitrate.Value.ToString(_usCulture));
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}
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if (string.Equals(videoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
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{
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// h264
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return string.Format(" -maxrate {0} -bufsize {1}",
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bitrate.Value.ToString(_usCulture),
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(bitrate.Value * 2).ToString(_usCulture));
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}
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// h264
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return string.Format(" -b:v {0} -maxrate {0} -bufsize {1}",
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bitrate.Value.ToString(_usCulture),
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(bitrate.Value * 2).ToString(_usCulture));
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}
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return string.Empty;
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}
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public string NormalizeTranscodingLevel(string videoCodec, string level)
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{
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double requestLevel;
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// Clients may direct play higher than level 41, but there's no reason to transcode higher
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if (double.TryParse(level, NumberStyles.Any, _usCulture, out requestLevel))
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{
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if (string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase))
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{
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if (requestLevel > 41)
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{
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return "41";
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}
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}
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}
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return level;
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}
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/// <summary>
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/// Gets the probe size argument.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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public string GetProbeSizeArgument(EncodingJobInfo state)
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{
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if (state.PlayableStreamFileNames.Count > 0)
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{
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return _mediaEncoder.GetProbeSizeAndAnalyzeDurationArgument(state.PlayableStreamFileNames.ToArray(), state.InputProtocol);
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}
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return _mediaEncoder.GetProbeSizeAndAnalyzeDurationArgument(new[] { state.MediaPath }, state.InputProtocol);
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}
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/// <summary>
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/// Gets the text subtitle param.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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public string GetTextSubtitleParam(EncodingJobInfo state)
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{
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var seconds = Math.Round(TimeSpan.FromTicks(state.StartTimeTicks ?? 0).TotalSeconds);
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var setPtsParam = state.CopyTimestamps
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? string.Empty
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: string.Format(",setpts=PTS -{0}/TB", seconds.ToString(_usCulture));
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if (state.SubtitleStream.IsExternal)
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{
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var subtitlePath = state.SubtitleStream.Path;
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var charsetParam = string.Empty;
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if (!string.IsNullOrEmpty(state.SubtitleStream.Language))
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{
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var charenc = _subtitleEncoder.GetSubtitleFileCharacterSet(subtitlePath, state.SubtitleStream.Language, state.MediaSource.Protocol, CancellationToken.None).Result;
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if (!string.IsNullOrEmpty(charenc))
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{
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charsetParam = ":charenc=" + charenc;
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}
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}
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// TODO: Perhaps also use original_size=1920x800 ??
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return string.Format("subtitles=filename='{0}'{1}{2}",
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_mediaEncoder.EscapeSubtitleFilterPath(subtitlePath),
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charsetParam,
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setPtsParam);
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}
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var mediaPath = state.MediaPath ?? string.Empty;
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return string.Format("subtitles='{0}:si={1}'{2}",
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_mediaEncoder.EscapeSubtitleFilterPath(mediaPath),
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state.InternalSubtitleStreamOffset.ToString(_usCulture),
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setPtsParam);
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}
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public double? GetFramerateParam(EncodingJobInfo state)
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{
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var request = state.BaseRequest;
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if (request.Framerate.HasValue)
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{
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return request.Framerate.Value;
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}
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var maxrate = request.MaxFramerate;
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if (maxrate.HasValue && state.VideoStream != null)
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{
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var contentRate = state.VideoStream.AverageFrameRate ?? state.VideoStream.RealFrameRate;
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if (contentRate.HasValue && contentRate.Value > maxrate.Value)
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{
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return maxrate;
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}
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}
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return null;
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}
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/// <summary>
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/// Gets the video bitrate to specify on the command line
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/// </summary>
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public string GetVideoQualityParam(EncodingJobInfo state, string videoEncoder, EncodingOptions encodingOptions, string defaultH264Preset)
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{
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var param = string.Empty;
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var isVc1 = state.VideoStream != null &&
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string.Equals(state.VideoStream.Codec, "vc1", StringComparison.OrdinalIgnoreCase);
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if (string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
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{
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if (!string.IsNullOrWhiteSpace(encodingOptions.H264Preset))
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{
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param += "-preset " + encodingOptions.H264Preset;
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}
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else
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{
|
|
param += "-preset " + defaultH264Preset;
|
|
}
|
|
|
|
if (encodingOptions.H264Crf >= 0 && encodingOptions.H264Crf <= 51)
|
|
{
|
|
param += " -crf " + encodingOptions.H264Crf.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
else
|
|
{
|
|
param += " -crf 23";
|
|
}
|
|
}
|
|
|
|
else if (string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-preset fast";
|
|
|
|
param += " -crf 28";
|
|
}
|
|
|
|
// h264 (h264_qsv)
|
|
else if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-preset 7 -look_ahead 0";
|
|
|
|
}
|
|
|
|
// h264 (h264_nvenc)
|
|
else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-preset default";
|
|
}
|
|
|
|
// webm
|
|
else if (string.Equals(videoEncoder, "libvpx", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// Values 0-3, 0 being highest quality but slower
|
|
var profileScore = 0;
|
|
|
|
string crf;
|
|
var qmin = "0";
|
|
var qmax = "50";
|
|
|
|
crf = "10";
|
|
|
|
if (isVc1)
|
|
{
|
|
profileScore++;
|
|
}
|
|
|
|
// Max of 2
|
|
profileScore = Math.Min(profileScore, 2);
|
|
|
|
// http://www.webmproject.org/docs/encoder-parameters/
|
|
param += string.Format("-speed 16 -quality good -profile:v {0} -slices 8 -crf {1} -qmin {2} -qmax {3}",
|
|
profileScore.ToString(_usCulture),
|
|
crf,
|
|
qmin,
|
|
qmax);
|
|
}
|
|
|
|
else if (string.Equals(videoEncoder, "mpeg4", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -bf 2";
|
|
}
|
|
|
|
// asf/wmv
|
|
else if (string.Equals(videoEncoder, "wmv2", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-qmin 2";
|
|
}
|
|
|
|
else if (string.Equals(videoEncoder, "msmpeg4", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += "-mbd 2";
|
|
}
|
|
|
|
param += GetVideoBitrateParam(state, videoEncoder);
|
|
|
|
var framerate = GetFramerateParam(state);
|
|
if (framerate.HasValue)
|
|
{
|
|
param += string.Format(" -r {0}", framerate.Value.ToString(_usCulture));
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(state.OutputVideoSync))
|
|
{
|
|
param += " -vsync " + state.OutputVideoSync;
|
|
}
|
|
|
|
var request = state.BaseRequest;
|
|
|
|
if (!string.IsNullOrEmpty(request.Profile))
|
|
{
|
|
if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
|
|
!string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// not supported by h264_omx
|
|
param += " -profile:v " + request.Profile;
|
|
}
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(request.Level))
|
|
{
|
|
var level = NormalizeTranscodingLevel(state.OutputVideoCodec, request.Level);
|
|
|
|
// h264_qsv and h264_nvenc expect levels to be expressed as a decimal. libx264 supports decimal and non-decimal format
|
|
// also needed for libx264 due to https://trac.ffmpeg.org/ticket/3307
|
|
if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) ||
|
|
string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase) ||
|
|
string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
switch (level)
|
|
{
|
|
case "30":
|
|
param += " -level 3.0";
|
|
break;
|
|
case "31":
|
|
param += " -level 3.1";
|
|
break;
|
|
case "32":
|
|
param += " -level 3.2";
|
|
break;
|
|
case "40":
|
|
param += " -level 4.0";
|
|
break;
|
|
case "41":
|
|
param += " -level 4.1";
|
|
break;
|
|
case "42":
|
|
param += " -level 4.2";
|
|
break;
|
|
case "50":
|
|
param += " -level 5.0";
|
|
break;
|
|
case "51":
|
|
param += " -level 5.1";
|
|
break;
|
|
case "52":
|
|
param += " -level 5.2";
|
|
break;
|
|
default:
|
|
param += " -level " + level;
|
|
break;
|
|
}
|
|
}
|
|
else if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += " -level " + level;
|
|
}
|
|
}
|
|
|
|
if (string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param += " -x264opts:0 subme=0:rc_lookahead=10:me_range=4:me=dia:no_chroma_me:8x8dct=0:partitions=none";
|
|
}
|
|
|
|
if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
|
|
!string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) &&
|
|
!string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
param = "-pix_fmt yuv420p " + param;
|
|
}
|
|
|
|
return param;
|
|
}
|
|
|
|
public bool CanStreamCopyVideo(EncodingJobInfo state, MediaStream videoStream)
|
|
{
|
|
var request = state.BaseRequest;
|
|
|
|
if (videoStream.IsInterlaced)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (videoStream.IsAnamorphic ?? false)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Can't stream copy if we're burning in subtitles
|
|
if (request.SubtitleStreamIndex.HasValue)
|
|
{
|
|
if (request.SubtitleMethod == SubtitleDeliveryMethod.Encode)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (string.Equals("h264", videoStream.Codec, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
if (videoStream.IsAVC.HasValue && !videoStream.IsAVC.Value && request.RequireAvc)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Source and target codecs must match
|
|
if (string.IsNullOrEmpty(videoStream.Codec) || !state.SupportedVideoCodecs.Contains(videoStream.Codec, StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// If client is requesting a specific video profile, it must match the source
|
|
if (!string.IsNullOrEmpty(request.Profile))
|
|
{
|
|
if (string.IsNullOrEmpty(videoStream.Profile))
|
|
{
|
|
//return false;
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(videoStream.Profile) && !string.Equals(request.Profile, videoStream.Profile, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var currentScore = GetVideoProfileScore(videoStream.Profile);
|
|
var requestedScore = GetVideoProfileScore(request.Profile);
|
|
|
|
if (currentScore == -1 || currentScore > requestedScore)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Video width must fall within requested value
|
|
if (request.MaxWidth.HasValue)
|
|
{
|
|
if (!videoStream.Width.HasValue || videoStream.Width.Value > request.MaxWidth.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video height must fall within requested value
|
|
if (request.MaxHeight.HasValue)
|
|
{
|
|
if (!videoStream.Height.HasValue || videoStream.Height.Value > request.MaxHeight.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video framerate must fall within requested value
|
|
var requestedFramerate = request.MaxFramerate ?? request.Framerate;
|
|
if (requestedFramerate.HasValue)
|
|
{
|
|
var videoFrameRate = videoStream.AverageFrameRate ?? videoStream.RealFrameRate;
|
|
|
|
if (!videoFrameRate.HasValue || videoFrameRate.Value > requestedFramerate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Video bitrate must fall within requested value
|
|
if (request.VideoBitRate.HasValue)
|
|
{
|
|
if (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (request.MaxVideoBitDepth.HasValue)
|
|
{
|
|
if (videoStream.BitDepth.HasValue && videoStream.BitDepth.Value > request.MaxVideoBitDepth.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (request.MaxRefFrames.HasValue)
|
|
{
|
|
if (videoStream.RefFrames.HasValue && videoStream.RefFrames.Value > request.MaxRefFrames.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// If a specific level was requested, the source must match or be less than
|
|
if (!string.IsNullOrEmpty(request.Level))
|
|
{
|
|
double requestLevel;
|
|
|
|
if (double.TryParse(request.Level, NumberStyles.Any, _usCulture, out requestLevel))
|
|
{
|
|
if (!videoStream.Level.HasValue)
|
|
{
|
|
//return false;
|
|
}
|
|
|
|
if (videoStream.Level.HasValue && videoStream.Level.Value > requestLevel)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return request.EnableAutoStreamCopy;
|
|
}
|
|
|
|
public bool CanStreamCopyAudio(EncodingJobInfo state, MediaStream audioStream, List<string> supportedAudioCodecs)
|
|
{
|
|
var request = state.BaseRequest;
|
|
|
|
// Source and target codecs must match
|
|
if (string.IsNullOrEmpty(audioStream.Codec) || !supportedAudioCodecs.Contains(audioStream.Codec, StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Video bitrate must fall within requested value
|
|
if (request.AudioBitRate.HasValue)
|
|
{
|
|
if (!audioStream.BitRate.HasValue || audioStream.BitRate.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.BitRate.Value > request.AudioBitRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Channels must fall within requested value
|
|
var channels = request.AudioChannels ?? request.MaxAudioChannels;
|
|
if (channels.HasValue)
|
|
{
|
|
if (!audioStream.Channels.HasValue || audioStream.Channels.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.Channels.Value > channels.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Sample rate must fall within requested value
|
|
if (request.AudioSampleRate.HasValue)
|
|
{
|
|
if (!audioStream.SampleRate.HasValue || audioStream.SampleRate.Value <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
if (audioStream.SampleRate.Value > request.AudioSampleRate.Value)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return request.EnableAutoStreamCopy;
|
|
}
|
|
|
|
public int? GetVideoBitrateParamValue(BaseEncodingJobOptions request, MediaStream videoStream, string outputVideoCodec)
|
|
{
|
|
var bitrate = request.VideoBitRate;
|
|
|
|
if (videoStream != null)
|
|
{
|
|
var isUpscaling = request.Height.HasValue && videoStream.Height.HasValue &&
|
|
request.Height.Value > videoStream.Height.Value;
|
|
|
|
if (request.Width.HasValue && videoStream.Width.HasValue &&
|
|
request.Width.Value > videoStream.Width.Value)
|
|
{
|
|
isUpscaling = true;
|
|
}
|
|
|
|
// Don't allow bitrate increases unless upscaling
|
|
if (!isUpscaling)
|
|
{
|
|
if (bitrate.HasValue && videoStream.BitRate.HasValue)
|
|
{
|
|
bitrate = Math.Min(bitrate.Value, videoStream.BitRate.Value);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
var inputVideoCodec = videoStream == null ? null : videoStream.Codec;
|
|
bitrate = ResolutionNormalizer.ScaleBitrate(bitrate.Value, inputVideoCodec, outputVideoCodec);
|
|
|
|
// If a max bitrate was requested, don't let the scaled bitrate exceed it
|
|
if (request.VideoBitRate.HasValue)
|
|
{
|
|
bitrate = Math.Min(bitrate.Value, request.VideoBitRate.Value);
|
|
}
|
|
}
|
|
|
|
return bitrate;
|
|
}
|
|
|
|
public int? GetAudioBitrateParam(BaseEncodingJobOptions request, MediaStream audioStream)
|
|
{
|
|
if (request.AudioBitRate.HasValue)
|
|
{
|
|
// Make sure we don't request a bitrate higher than the source
|
|
var currentBitrate = audioStream == null ? request.AudioBitRate.Value : audioStream.BitRate ?? request.AudioBitRate.Value;
|
|
|
|
// Don't encode any higher than this
|
|
return Math.Min(384000, request.AudioBitRate.Value);
|
|
//return Math.Min(currentBitrate, request.AudioBitRate.Value);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
public string GetAudioFilterParam(EncodingJobInfo state, EncodingOptions encodingOptions, bool isHls)
|
|
{
|
|
var volParam = string.Empty;
|
|
var audioSampleRate = string.Empty;
|
|
|
|
var channels = state.OutputAudioChannels;
|
|
|
|
// Boost volume to 200% when downsampling from 6ch to 2ch
|
|
if (channels.HasValue && channels.Value <= 2)
|
|
{
|
|
if (state.AudioStream != null && state.AudioStream.Channels.HasValue && state.AudioStream.Channels.Value > 5 && !encodingOptions.DownMixAudioBoost.Equals(1))
|
|
{
|
|
volParam = ",volume=" + encodingOptions.DownMixAudioBoost.ToString(_usCulture);
|
|
}
|
|
}
|
|
|
|
if (state.OutputAudioSampleRate.HasValue)
|
|
{
|
|
audioSampleRate = state.OutputAudioSampleRate.Value + ":";
|
|
}
|
|
|
|
var adelay = isHls ? "adelay=1," : string.Empty;
|
|
|
|
var pts = string.Empty;
|
|
|
|
if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.BaseRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode && !state.CopyTimestamps)
|
|
{
|
|
var seconds = TimeSpan.FromTicks(state.StartTimeTicks ?? 0).TotalSeconds;
|
|
|
|
pts = string.Format(",asetpts=PTS-{0}/TB", Math.Round(seconds).ToString(_usCulture));
|
|
}
|
|
|
|
return string.Format("-af \"{0}aresample={1}async={4}{2}{3}\"",
|
|
|
|
adelay,
|
|
audioSampleRate,
|
|
volParam,
|
|
pts,
|
|
state.OutputAudioSync);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of audio channels to specify on the command line
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <param name="audioStream">The audio stream.</param>
|
|
/// <param name="outputAudioCodec">The output audio codec.</param>
|
|
/// <returns>System.Nullable{System.Int32}.</returns>
|
|
public int? GetNumAudioChannelsParam(BaseEncodingJobOptions request, MediaStream audioStream, string outputAudioCodec)
|
|
{
|
|
var inputChannels = audioStream == null
|
|
? null
|
|
: audioStream.Channels;
|
|
|
|
if (inputChannels <= 0)
|
|
{
|
|
inputChannels = null;
|
|
}
|
|
|
|
int? transcoderChannelLimit = null;
|
|
var codec = outputAudioCodec ?? string.Empty;
|
|
|
|
if (codec.IndexOf("wma", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
// wmav2 currently only supports two channel output
|
|
transcoderChannelLimit = 2;
|
|
}
|
|
|
|
else if (codec.IndexOf("mp3", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
// libmp3lame currently only supports two channel output
|
|
transcoderChannelLimit = 2;
|
|
}
|
|
else
|
|
{
|
|
// If we don't have any media info then limit it to 6 to prevent encoding errors due to asking for too many channels
|
|
transcoderChannelLimit = 6;
|
|
}
|
|
|
|
var isTranscodingAudio = !string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase);
|
|
|
|
int? resultChannels = null;
|
|
if (isTranscodingAudio)
|
|
{
|
|
resultChannels = request.TranscodingMaxAudioChannels;
|
|
}
|
|
resultChannels = resultChannels ?? request.MaxAudioChannels ?? request.AudioChannels;
|
|
|
|
if (inputChannels.HasValue)
|
|
{
|
|
resultChannels = resultChannels.HasValue
|
|
? Math.Min(resultChannels.Value, inputChannels.Value)
|
|
: inputChannels.Value;
|
|
}
|
|
|
|
if (isTranscodingAudio && transcoderChannelLimit.HasValue)
|
|
{
|
|
resultChannels = resultChannels.HasValue
|
|
? Math.Min(resultChannels.Value, transcoderChannelLimit.Value)
|
|
: transcoderChannelLimit.Value;
|
|
}
|
|
|
|
return resultChannels ?? request.AudioChannels;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Enforces the resolution limit.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
public void EnforceResolutionLimit(EncodingJobInfo state)
|
|
{
|
|
var videoRequest = state.BaseRequest;
|
|
|
|
// Switch the incoming params to be ceilings rather than fixed values
|
|
videoRequest.MaxWidth = videoRequest.MaxWidth ?? videoRequest.Width;
|
|
videoRequest.MaxHeight = videoRequest.MaxHeight ?? videoRequest.Height;
|
|
|
|
videoRequest.Width = null;
|
|
videoRequest.Height = null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the fast seek command line parameter.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
/// <value>The fast seek command line parameter.</value>
|
|
public string GetFastSeekCommandLineParameter(BaseEncodingJobOptions request)
|
|
{
|
|
var time = request.StartTimeTicks ?? 0;
|
|
|
|
if (time > 0)
|
|
{
|
|
return string.Format("-ss {0}", _mediaEncoder.GetTimeParameter(time));
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the map args.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
public string GetMapArgs(EncodingJobInfo state)
|
|
{
|
|
// If we don't have known media info
|
|
// If input is video, use -sn to drop subtitles
|
|
// Otherwise just return empty
|
|
if (state.VideoStream == null && state.AudioStream == null)
|
|
{
|
|
return state.IsInputVideo ? "-sn" : string.Empty;
|
|
}
|
|
|
|
// We have media info, but we don't know the stream indexes
|
|
if (state.VideoStream != null && state.VideoStream.Index == -1)
|
|
{
|
|
return "-sn";
|
|
}
|
|
|
|
// We have media info, but we don't know the stream indexes
|
|
if (state.AudioStream != null && state.AudioStream.Index == -1)
|
|
{
|
|
return state.IsInputVideo ? "-sn" : string.Empty;
|
|
}
|
|
|
|
var args = string.Empty;
|
|
|
|
if (state.VideoStream != null)
|
|
{
|
|
args += string.Format("-map 0:{0}", state.VideoStream.Index);
|
|
}
|
|
else
|
|
{
|
|
// No known video stream
|
|
args += "-vn";
|
|
}
|
|
|
|
if (state.AudioStream != null)
|
|
{
|
|
args += string.Format(" -map 0:{0}", state.AudioStream.Index);
|
|
}
|
|
|
|
else
|
|
{
|
|
args += " -map -0:a";
|
|
}
|
|
|
|
var subtitleMethod = state.BaseRequest.SubtitleMethod;
|
|
if (state.SubtitleStream == null || subtitleMethod == SubtitleDeliveryMethod.Hls)
|
|
{
|
|
args += " -map -0:s";
|
|
}
|
|
else if (subtitleMethod == SubtitleDeliveryMethod.Embed)
|
|
{
|
|
args += string.Format(" -map 0:{0}", state.SubtitleStream.Index);
|
|
}
|
|
else if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
|
|
{
|
|
args += " -map 1:0 -sn";
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines which stream will be used for playback
|
|
/// </summary>
|
|
/// <param name="allStream">All stream.</param>
|
|
/// <param name="desiredIndex">Index of the desired.</param>
|
|
/// <param name="type">The type.</param>
|
|
/// <param name="returnFirstIfNoIndex">if set to <c>true</c> [return first if no index].</param>
|
|
/// <returns>MediaStream.</returns>
|
|
public MediaStream GetMediaStream(IEnumerable<MediaStream> allStream, int? desiredIndex, MediaStreamType type, bool returnFirstIfNoIndex = true)
|
|
{
|
|
var streams = allStream.Where(s => s.Type == type).OrderBy(i => i.Index).ToList();
|
|
|
|
if (desiredIndex.HasValue)
|
|
{
|
|
var stream = streams.FirstOrDefault(s => s.Index == desiredIndex.Value);
|
|
|
|
if (stream != null)
|
|
{
|
|
return stream;
|
|
}
|
|
}
|
|
|
|
if (type == MediaStreamType.Video)
|
|
{
|
|
streams = streams.Where(i => !string.Equals(i.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)).ToList();
|
|
}
|
|
|
|
if (returnFirstIfNoIndex && type == MediaStreamType.Audio)
|
|
{
|
|
return streams.FirstOrDefault(i => i.Channels.HasValue && i.Channels.Value > 0) ??
|
|
streams.FirstOrDefault();
|
|
}
|
|
|
|
// Just return the first one
|
|
return returnFirstIfNoIndex ? streams.FirstOrDefault() : null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the internal graphical subtitle param.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputVideoCodec">The output video codec.</param>
|
|
/// <returns>System.String.</returns>
|
|
public string GetGraphicalSubtitleParam(EncodingJobInfo state, string outputVideoCodec)
|
|
{
|
|
var outputSizeParam = string.Empty;
|
|
|
|
var request = state.BaseRequest;
|
|
|
|
// Add resolution params, if specified
|
|
if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
|
|
{
|
|
outputSizeParam = GetOutputSizeParam(state, outputVideoCodec).TrimEnd('"');
|
|
|
|
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("format", StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
else
|
|
{
|
|
outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
}
|
|
|
|
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase) && outputSizeParam.Length == 0)
|
|
{
|
|
outputSizeParam = ",format=nv12|vaapi,hwupload";
|
|
}
|
|
|
|
var videoSizeParam = string.Empty;
|
|
|
|
if (state.VideoStream != null && state.VideoStream.Width.HasValue && state.VideoStream.Height.HasValue)
|
|
{
|
|
videoSizeParam = string.Format("scale={0}:{1}", state.VideoStream.Width.Value.ToString(_usCulture), state.VideoStream.Height.Value.ToString(_usCulture));
|
|
}
|
|
|
|
var mapPrefix = state.SubtitleStream.IsExternal ?
|
|
1 :
|
|
0;
|
|
|
|
var subtitleStreamIndex = state.SubtitleStream.IsExternal
|
|
? 0
|
|
: state.SubtitleStream.Index;
|
|
|
|
return string.Format(" -filter_complex \"[{0}:{1}]{4}[sub] ; [0:{2}] [sub] overlay{3}\"",
|
|
mapPrefix.ToString(_usCulture),
|
|
subtitleStreamIndex.ToString(_usCulture),
|
|
state.VideoStream.Index.ToString(_usCulture),
|
|
outputSizeParam,
|
|
videoSizeParam);
|
|
}
|
|
|
|
/// <summary>
|
|
/// If we're going to put a fixed size on the command line, this will calculate it
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputVideoCodec">The output video codec.</param>
|
|
/// <param name="allowTimeStampCopy">if set to <c>true</c> [allow time stamp copy].</param>
|
|
/// <returns>System.String.</returns>
|
|
public string GetOutputSizeParam(EncodingJobInfo state,
|
|
string outputVideoCodec,
|
|
bool allowTimeStampCopy = true)
|
|
{
|
|
// http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
|
|
|
|
var request = state.BaseRequest;
|
|
|
|
var filters = new List<string>();
|
|
|
|
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
filters.Add("format=nv12|vaapi");
|
|
filters.Add("hwupload");
|
|
}
|
|
else if (state.DeInterlace && !string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
filters.Add("yadif=0:-1:0");
|
|
}
|
|
|
|
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// Work around vaapi's reduced scaling features
|
|
var scaler = "scale_vaapi";
|
|
|
|
// Given the input dimensions (inputWidth, inputHeight), determine the output dimensions
|
|
// (outputWidth, outputHeight). The user may request precise output dimensions or maximum
|
|
// output dimensions. Output dimensions are guaranteed to be even.
|
|
decimal inputWidth = Convert.ToDecimal(state.VideoStream.Width);
|
|
decimal inputHeight = Convert.ToDecimal(state.VideoStream.Height);
|
|
decimal outputWidth = request.Width.HasValue ? Convert.ToDecimal(request.Width.Value) : inputWidth;
|
|
decimal outputHeight = request.Height.HasValue ? Convert.ToDecimal(request.Height.Value) : inputHeight;
|
|
decimal maximumWidth = request.MaxWidth.HasValue ? Convert.ToDecimal(request.MaxWidth.Value) : outputWidth;
|
|
decimal maximumHeight = request.MaxHeight.HasValue ? Convert.ToDecimal(request.MaxHeight.Value) : outputHeight;
|
|
|
|
if (outputWidth > maximumWidth || outputHeight > maximumHeight)
|
|
{
|
|
var scale = Math.Min(maximumWidth / outputWidth, maximumHeight / outputHeight);
|
|
outputWidth = Math.Min(maximumWidth, Math.Truncate(outputWidth * scale));
|
|
outputHeight = Math.Min(maximumHeight, Math.Truncate(outputHeight * scale));
|
|
}
|
|
|
|
outputWidth = 2 * Math.Truncate(outputWidth / 2);
|
|
outputHeight = 2 * Math.Truncate(outputHeight / 2);
|
|
|
|
if (outputWidth != inputWidth || outputHeight != inputHeight)
|
|
{
|
|
filters.Add(string.Format("{0}=w={1}:h={2}", scaler, outputWidth.ToString(_usCulture), outputHeight.ToString(_usCulture)));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If fixed dimensions were supplied
|
|
if (request.Width.HasValue && request.Height.HasValue)
|
|
{
|
|
var widthParam = request.Width.Value.ToString(_usCulture);
|
|
var heightParam = request.Height.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc({0}/2)*2:trunc({1}/2)*2", widthParam, heightParam));
|
|
}
|
|
|
|
// If Max dimensions were supplied, for width selects lowest even number between input width and width req size and selects lowest even number from in width*display aspect and requested size
|
|
else if (request.MaxWidth.HasValue && request.MaxHeight.HasValue)
|
|
{
|
|
var maxWidthParam = request.MaxWidth.Value.ToString(_usCulture);
|
|
var maxHeightParam = request.MaxHeight.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/2)*2:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2", maxWidthParam, maxHeightParam));
|
|
}
|
|
|
|
// If a fixed width was requested
|
|
else if (request.Width.HasValue)
|
|
{
|
|
var widthParam = request.Width.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale={0}:trunc(ow/a/2)*2", widthParam));
|
|
}
|
|
|
|
// If a fixed height was requested
|
|
else if (request.Height.HasValue)
|
|
{
|
|
var heightParam = request.Height.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(oh*a/2)*2:{0}", heightParam));
|
|
}
|
|
|
|
// If a max width was requested
|
|
else if (request.MaxWidth.HasValue)
|
|
{
|
|
var maxWidthParam = request.MaxWidth.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,{0})/2)*2:trunc(ow/dar/2)*2", maxWidthParam));
|
|
}
|
|
|
|
// If a max height was requested
|
|
else if (request.MaxHeight.HasValue)
|
|
{
|
|
var maxHeightParam = request.MaxHeight.Value.ToString(_usCulture);
|
|
|
|
filters.Add(string.Format("scale=trunc(oh*a/2)*2:min(max(iw/dar\\,ih)\\,{0})", maxHeightParam));
|
|
}
|
|
}
|
|
|
|
var output = string.Empty;
|
|
|
|
if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && request.SubtitleMethod == SubtitleDeliveryMethod.Encode)
|
|
{
|
|
var subParam = GetTextSubtitleParam(state);
|
|
|
|
filters.Add(subParam);
|
|
|
|
if (allowTimeStampCopy)
|
|
{
|
|
output += " -copyts";
|
|
}
|
|
}
|
|
|
|
if (filters.Count > 0)
|
|
{
|
|
output += string.Format(" -vf \"{0}\"", string.Join(",", filters.ToArray()));
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
/// Gets the number of threads.
|
|
/// </summary>
|
|
/// <returns>System.Int32.</returns>
|
|
public int GetNumberOfThreads(EncodingJobInfo state, EncodingOptions encodingOptions, bool isWebm)
|
|
{
|
|
var threads = GetNumberOfThreadsInternal(state, encodingOptions, isWebm);
|
|
|
|
if (state.BaseRequest.CpuCoreLimit.HasValue && state.BaseRequest.CpuCoreLimit.Value > 0)
|
|
{
|
|
threads = Math.Min(threads, state.BaseRequest.CpuCoreLimit.Value);
|
|
}
|
|
|
|
return threads;
|
|
}
|
|
|
|
public void TryStreamCopy(EncodingJobInfo state)
|
|
{
|
|
if (state.VideoStream != null && CanStreamCopyVideo(state, state.VideoStream))
|
|
{
|
|
state.OutputVideoCodec = "copy";
|
|
}
|
|
else
|
|
{
|
|
var user = state.User;
|
|
|
|
// If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
|
|
if (user != null && !user.Policy.EnableVideoPlaybackTranscoding)
|
|
{
|
|
state.OutputVideoCodec = "copy";
|
|
}
|
|
}
|
|
|
|
if (state.AudioStream != null && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs))
|
|
{
|
|
state.OutputAudioCodec = "copy";
|
|
}
|
|
else
|
|
{
|
|
var user = state.User;
|
|
|
|
// If the user doesn't have access to transcoding, then force stream copy, regardless of whether it will be compatible or not
|
|
if (user != null && !user.Policy.EnableAudioPlaybackTranscoding)
|
|
{
|
|
state.OutputAudioCodec = "copy";
|
|
}
|
|
}
|
|
}
|
|
|
|
public string GetInputModifier(EncodingJobInfo state, EncodingOptions encodingOptions)
|
|
{
|
|
var inputModifier = string.Empty;
|
|
|
|
var probeSize = GetProbeSizeArgument(state);
|
|
inputModifier += " " + probeSize;
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
var userAgentParam = GetUserAgentParam(state);
|
|
|
|
if (!string.IsNullOrWhiteSpace(userAgentParam))
|
|
{
|
|
inputModifier += " " + userAgentParam;
|
|
}
|
|
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
inputModifier += " " + GetFastSeekCommandLineParameter(state.BaseRequest);
|
|
inputModifier = inputModifier.Trim();
|
|
|
|
//inputModifier += " -fflags +genpts+ignidx+igndts";
|
|
//if (state.IsVideoRequest && genPts)
|
|
//{
|
|
// inputModifier += " -fflags +genpts";
|
|
//}
|
|
|
|
if (!string.IsNullOrEmpty(state.InputAudioSync))
|
|
{
|
|
inputModifier += " -async " + state.InputAudioSync;
|
|
}
|
|
|
|
if (!string.IsNullOrEmpty(state.InputVideoSync))
|
|
{
|
|
inputModifier += " -vsync " + state.InputVideoSync;
|
|
}
|
|
|
|
if (state.ReadInputAtNativeFramerate)
|
|
{
|
|
inputModifier += " -re";
|
|
}
|
|
|
|
var videoDecoder = GetVideoDecoder(state, encodingOptions);
|
|
if (!string.IsNullOrWhiteSpace(videoDecoder))
|
|
{
|
|
inputModifier += " " + videoDecoder;
|
|
}
|
|
|
|
if (state.IsVideoRequest)
|
|
{
|
|
// Important: If this is ever re-enabled, make sure not to use it with wtv because it breaks seeking
|
|
if (string.Equals(state.OutputContainer, "mkv", StringComparison.OrdinalIgnoreCase) && state.CopyTimestamps)
|
|
{
|
|
//inputModifier += " -noaccurate_seek";
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(state.InputContainer))
|
|
{
|
|
var inputFormat = GetInputFormat(state.InputContainer);
|
|
if (!string.IsNullOrWhiteSpace(inputFormat))
|
|
{
|
|
inputModifier += " -f " + inputFormat;
|
|
}
|
|
}
|
|
|
|
if (state.RunTimeTicks.HasValue)
|
|
{
|
|
foreach (var stream in state.MediaSource.MediaStreams)
|
|
{
|
|
if (!stream.IsExternal && stream.Type != MediaStreamType.Subtitle)
|
|
{
|
|
if (!string.IsNullOrWhiteSpace(stream.Codec) && stream.Index != -1)
|
|
{
|
|
var decoder = GetDecoderFromCodec(stream.Codec);
|
|
|
|
if (!string.IsNullOrWhiteSpace(decoder))
|
|
{
|
|
inputModifier += " -codec:" + stream.Index.ToString(_usCulture) + " " + decoder;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return inputModifier;
|
|
}
|
|
|
|
|
|
public void AttachMediaSourceInfo(EncodingJobInfo state,
|
|
MediaSourceInfo mediaSource,
|
|
string requestedUrl)
|
|
{
|
|
state.MediaPath = mediaSource.Path;
|
|
state.InputProtocol = mediaSource.Protocol;
|
|
state.InputContainer = mediaSource.Container;
|
|
state.RunTimeTicks = mediaSource.RunTimeTicks;
|
|
state.RemoteHttpHeaders = mediaSource.RequiredHttpHeaders;
|
|
|
|
if (mediaSource.VideoType.HasValue)
|
|
{
|
|
state.VideoType = mediaSource.VideoType.Value;
|
|
}
|
|
|
|
state.IsoType = mediaSource.IsoType;
|
|
|
|
state.PlayableStreamFileNames = mediaSource.PlayableStreamFileNames.ToList();
|
|
|
|
if (mediaSource.Timestamp.HasValue)
|
|
{
|
|
state.InputTimestamp = mediaSource.Timestamp.Value;
|
|
}
|
|
|
|
state.InputProtocol = mediaSource.Protocol;
|
|
state.MediaPath = mediaSource.Path;
|
|
state.RunTimeTicks = mediaSource.RunTimeTicks;
|
|
state.RemoteHttpHeaders = mediaSource.RequiredHttpHeaders;
|
|
state.ReadInputAtNativeFramerate = mediaSource.ReadAtNativeFramerate;
|
|
|
|
if (state.ReadInputAtNativeFramerate ||
|
|
mediaSource.Protocol == MediaProtocol.File && string.Equals(mediaSource.Container, "wtv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
state.OutputAudioSync = "1000";
|
|
state.InputVideoSync = "-1";
|
|
state.InputAudioSync = "1";
|
|
}
|
|
|
|
if (string.Equals(mediaSource.Container, "wma", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// Seeing some stuttering when transcoding wma to audio-only HLS
|
|
state.InputAudioSync = "1";
|
|
}
|
|
|
|
var mediaStreams = mediaSource.MediaStreams;
|
|
|
|
if (state.IsVideoRequest)
|
|
{
|
|
var videoRequest = state.BaseRequest;
|
|
|
|
if (string.IsNullOrEmpty(videoRequest.VideoCodec))
|
|
{
|
|
if (string.IsNullOrWhiteSpace(requestedUrl))
|
|
{
|
|
requestedUrl = "test." + videoRequest.OutputContainer;
|
|
}
|
|
|
|
videoRequest.VideoCodec = InferVideoCodec(requestedUrl);
|
|
}
|
|
|
|
state.VideoStream = GetMediaStream(mediaStreams, videoRequest.VideoStreamIndex, MediaStreamType.Video);
|
|
state.SubtitleStream = GetMediaStream(mediaStreams, videoRequest.SubtitleStreamIndex, MediaStreamType.Subtitle, false);
|
|
state.SubtitleDeliveryMethod = videoRequest.SubtitleMethod;
|
|
state.AudioStream = GetMediaStream(mediaStreams, videoRequest.AudioStreamIndex, MediaStreamType.Audio);
|
|
|
|
if (state.SubtitleStream != null && !state.SubtitleStream.IsExternal)
|
|
{
|
|
state.InternalSubtitleStreamOffset = mediaStreams.Where(i => i.Type == MediaStreamType.Subtitle && !i.IsExternal).ToList().IndexOf(state.SubtitleStream);
|
|
}
|
|
|
|
if (state.VideoStream != null && state.VideoStream.IsInterlaced)
|
|
{
|
|
state.DeInterlace = true;
|
|
}
|
|
|
|
EnforceResolutionLimit(state);
|
|
}
|
|
else
|
|
{
|
|
state.AudioStream = GetMediaStream(mediaStreams, null, MediaStreamType.Audio, true);
|
|
}
|
|
|
|
state.MediaSource = mediaSource;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output video codec
|
|
/// </summary>
|
|
protected string GetVideoDecoder(EncodingJobInfo state, EncodingOptions encodingOptions)
|
|
{
|
|
if (string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// Only use alternative encoders for video files.
|
|
// When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
|
|
// Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
|
|
if (state.VideoType != VideoType.VideoFile)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (state.VideoStream != null && !string.IsNullOrWhiteSpace(state.VideoStream.Codec))
|
|
{
|
|
if (string.Equals(encodingOptions.HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
switch (state.MediaSource.VideoStream.Codec.ToLower())
|
|
{
|
|
case "avc":
|
|
case "h264":
|
|
if (_mediaEncoder.SupportsDecoder("h264_qsv"))
|
|
{
|
|
return "-c:v h264_qsv ";
|
|
}
|
|
break;
|
|
case "mpeg2video":
|
|
if (_mediaEncoder.SupportsDecoder("mpeg2_qsv"))
|
|
{
|
|
return "-c:v mpeg2_qsv ";
|
|
}
|
|
break;
|
|
case "vc1":
|
|
if (_mediaEncoder.SupportsDecoder("vc1_qsv"))
|
|
{
|
|
return "-c:v vc1_qsv ";
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// leave blank so ffmpeg will decide
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of threads.
|
|
/// </summary>
|
|
/// <returns>System.Int32.</returns>
|
|
private int GetNumberOfThreadsInternal(EncodingJobInfo state, EncodingOptions encodingOptions, bool isWebm)
|
|
{
|
|
var threads = encodingOptions.EncodingThreadCount;
|
|
|
|
if (isWebm)
|
|
{
|
|
// Recommended per docs
|
|
return Math.Max(Environment.ProcessorCount - 1, 2);
|
|
}
|
|
|
|
// Automatic
|
|
if (threads == -1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
return threads;
|
|
}
|
|
}
|
|
}
|