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Improve hwaccel error logic

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This commit is contained in:
Zoe Roux 2024-02-24 16:10:12 +00:00
parent de3013eebf
commit 2cacd94f41
1 changed files with 24 additions and 17 deletions
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41
transcoder/src/hwaccel.go
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@ -1,12 +1,32 @@
package src
import "log"
import (
"log"
"os"
)
func DetectHardwareAccel() HwAccelT {
name := GetEnvOr("GOTRANSCODER_HWACCEL", "disabled")
log.Printf("Using hardware acceleration: %s", name)
switch name {
case "default":
return HwAccelT{
Name: "disabled",
DecodeFlags: []string{},
EncodeFlags: []string{
"-c:v", "libx264",
// superfast or ultrafast would produce a file extremly big so we prever veryfast or faster.
"-preset", "faster",
// sc_threshold is a scene detection mechanisum used to create a keyframe when the scene changes
// this is on by default and inserts keyframes where we don't want to (it also breaks force_key_frames)
// we disable it to prevents whole scenes from behing removed due to the -f segment failing to find the corresonding keyframe
"-sc_threshold", "0",
},
// we could put :force_original_aspect_ratio=decrease:force_divisible_by=2 here but we already calculate a correct width and
// aspect ratio in our code so there is no need.
ScaleFilter: "scale=%d:%d",
}
case "nvidia":
return HwAccelT{
Name: "nvidia",
@ -28,21 +48,8 @@ func DetectHardwareAccel() HwAccelT {
ScaleFilter: "scale_cuda=%d:%d",
}
default:
return HwAccelT{
Name: "disabled",
DecodeFlags: []string{},
EncodeFlags: []string{
"-c:v", "libx264",
// superfast or ultrafast would produce a file extremly big so we prever veryfast or faster.
"-preset", "faster",
// sc_threshold is a scene detection mechanisum used to create a keyframe when the scene changes
// this is on by default and inserts keyframes where we don't want to (it also breaks force_key_frames)
// we disable it to prevents whole scenes from behing removed due to the -f segment failing to find the corresonding keyframe
"-sc_threshold", "0",
},
// we could put :force_original_aspect_ratio=decrease:force_divisible_by=2 here but we already calculate a correct width and
// aspect ratio in our code so there is no need.
ScaleFilter: "scale=%d:%d",
}
log.Printf("No hardware accelerator named: %s", name)
os.Exit(2)
panic("unreachable")
}
}