diff --git a/back/src/Kyoo.Abstractions/Models/Font.cs b/back/src/Kyoo.Abstractions/Models/Font.cs
index eafb3bdd..ca9c4680 100644
--- a/back/src/Kyoo.Abstractions/Models/Font.cs
+++ b/back/src/Kyoo.Abstractions/Models/Font.cs
@@ -25,7 +25,7 @@ namespace Kyoo.Abstractions.Models
 	/// <summary>
 	/// A font of an <see cref="Episode"/>.
 	/// </summary>
-	public class Font
+	public class Font : ILink
 	{
 		/// <summary>
 		/// A human-readable identifier, used in the URL.
@@ -47,6 +47,9 @@ namespace Kyoo.Abstractions.Models
 		/// </summary>
 		[SerializeIgnore] public string Path { get; set; }
 
+		/// <inheritdoc/>
+		public object Link { get; init; }
+
 		/// <summary>
 		/// Create a new empty <see cref="Font"/>.
 		/// </summary>
@@ -56,12 +59,14 @@ namespace Kyoo.Abstractions.Models
 		/// Create a new <see cref="Font"/> from a path.
 		/// </summary>
 		/// <param name="path">The path of the font.</param>
-		public Font(string path)
+		/// <param name="episodeSlug">The slug of the episode that contains this font.</param>
+		public Font(string path, string episodeSlug)
 		{
 			Slug = Utility.ToSlug(PathIO.GetFileNameWithoutExtension(path));
 			Path = path;
 			File = PathIO.GetFileName(path);
 			Format = PathIO.GetExtension(path).Replace(".", string.Empty);
+			Link = $"/watch/{episodeSlug}/font/{Slug}.{Format}";
 		}
 	}
 }
diff --git a/back/src/Kyoo.Abstractions/Models/Resources/Interfaces/ILink.cs b/back/src/Kyoo.Abstractions/Models/Resources/Interfaces/ILink.cs
new file mode 100644
index 00000000..5c146786
--- /dev/null
+++ b/back/src/Kyoo.Abstractions/Models/Resources/Interfaces/ILink.cs
@@ -0,0 +1,31 @@
+// Kyoo - A portable and vast media library solution.
+// Copyright (c) Kyoo.
+//
+// See AUTHORS.md and LICENSE file in the project root for full license information.
+//
+// Kyoo is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// Kyoo is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kyoo. If not, see <https://www.gnu.org/licenses/>.
+
+namespace Kyoo.Abstractions.Models
+{
+	/// <summary>
+	/// An interface to represent resources that should have a link field in their return values (like videos).
+	/// </summary>
+	public interface ILink
+	{
+		/// <summary>
+		/// The link to return, in most cases this should be a string.
+		/// </summary>
+		public object Link { get; }
+	}
+}
diff --git a/back/src/Kyoo.Abstractions/Models/Resources/Track.cs b/back/src/Kyoo.Abstractions/Models/Resources/Track.cs
index 59b3746f..d243c0eb 100644
--- a/back/src/Kyoo.Abstractions/Models/Resources/Track.cs
+++ b/back/src/Kyoo.Abstractions/Models/Resources/Track.cs
@@ -55,7 +55,7 @@ namespace Kyoo.Abstractions.Models
 	/// <summary>
 	/// A video, audio or subtitle track for an episode.
 	/// </summary>
-	public class Track : IResource
+	public class Track : IResource, ILink
 	{
 		/// <inheritdoc />
 		public int ID { get; set; }
@@ -66,9 +66,9 @@ namespace Kyoo.Abstractions.Models
 		{
 			get
 			{
-				string type = Type.ToString().ToLower();
+				string type = Type.ToString().ToLowerInvariant();
 				string index = TrackIndex != 0 ? $"-{TrackIndex}" : string.Empty;
-				string episode = _episodeSlug ?? Episode?.Slug ?? EpisodeID.ToString();
+				string episode = _episodeSlug ?? Episode?.Slug ?? EpisodeID.ToString(CultureInfo.InvariantCulture);
 				return $"{episode}.{Language ?? "und"}{index}{(IsForced ? ".forced" : string.Empty)}.{type}";
 			}
 
@@ -92,7 +92,7 @@ namespace Kyoo.Abstractions.Models
 				Language = match.Groups["lang"].Value;
 				if (Language == "und")
 					Language = null;
-				TrackIndex = match.Groups["index"].Success ? int.Parse(match.Groups["index"].Value) : 0;
+				TrackIndex = match.Groups["index"].Success ? int.Parse(match.Groups["index"].Value, CultureInfo.InvariantCulture) : 0;
 				IsForced = match.Groups["forced"].Success;
 				Type = Enum.Parse<StreamType>(match.Groups["type"].Value, true);
 			}
@@ -198,6 +198,9 @@ namespace Kyoo.Abstractions.Models
 		/// </summary>
 		[SerializeIgnore] private Episode _episode;
 
+		/// <inheritdoc/>
+		public object Link => Type == StreamType.Subtitle ? $"/subtitle/{Slug}" : null;
+
 		// Converting mkv track language to c# system language tag.
 		private static string _GetLanguage(string mkvLanguage)
 		{
diff --git a/back/src/Kyoo.Abstractions/Models/WatchItem.cs b/back/src/Kyoo.Abstractions/Models/WatchItem.cs
index 70e61836..e737aa74 100644
--- a/back/src/Kyoo.Abstractions/Models/WatchItem.cs
+++ b/back/src/Kyoo.Abstractions/Models/WatchItem.cs
@@ -33,7 +33,7 @@ namespace Kyoo.Abstractions.Models
 	/// Information about tracks and display information that could be used by the player.
 	/// This contains mostly data from an <see cref="Episode"/> with another form.
 	/// </summary>
-	public class WatchItem : CustomTypeDescriptor, IThumbnails
+	public class WatchItem : CustomTypeDescriptor, IThumbnails, ILink
 	{
 		/// <summary>
 		/// The ID of the episode associated with this item.
@@ -136,6 +136,13 @@ namespace Kyoo.Abstractions.Models
 		/// </summary>
 		public ICollection<Chapter> Chapters { get; set; }
 
+		/// <inheritdoc/>
+		public object Link => new
+		{
+			Direct = $"/video/direct/{Slug}",
+			Transmux = $"/video/transmux/{Slug}/master.m3u8",
+		};
+
 		/// <summary>
 		/// Create a <see cref="WatchItem"/> from an <see cref="Episode"/>.
 		/// </summary>
diff --git a/back/src/Kyoo.Core/Controllers/Transcoder.cs b/back/src/Kyoo.Core/Controllers/Transcoder.cs
index b684271d..04bb3414 100644
--- a/back/src/Kyoo.Core/Controllers/Transcoder.cs
+++ b/back/src/Kyoo.Core/Controllers/Transcoder.cs
@@ -233,7 +233,7 @@ namespace Kyoo.Core.Controllers
 		{
 			string path = _files.Combine(await _files.GetExtraDirectory(episode), "Attachments");
 			return (await _files.ListFiles(path))
-				.Select(x => new Font(x))
+				.Select(x => new Font(x, episode.Slug))
 				.ToArray();
 		}
 
@@ -245,7 +245,7 @@ namespace Kyoo.Core.Controllers
 				.FirstOrDefault(x => Utility.ToSlug(Path.GetFileNameWithoutExtension(x)) == slug);
 			if (font == null)
 				return null;
-			return new Font(font);
+			return new Font(font, episode.Slug);
 		}
 
 		/// <inheritdoc />
diff --git a/front/src/models/resources/watch-item.ts b/front/src/models/resources/watch-item.ts
index 023353d1..8131a47d 100644
--- a/front/src/models/resources/watch-item.ts
+++ b/front/src/models/resources/watch-item.ts
@@ -20,7 +20,7 @@
 
 import { z } from "zod";
 import { zdate } from "~/utils/zod";
-import { ResourceP, ImagesP } from "../traits";
+import { ResourceP, ImagesP, imageFn } from "../traits";
 import { EpisodeP } from "./episode";
 
 /**
@@ -59,6 +59,10 @@ export const TrackP = ResourceP.extend({
 	 * A user-friendly name for this track. It does not include the track type.
 	 */
 	displayName: z.string(),
+	/*
+	 * The url of this track (only if this is a subtitle)..
+	 */
+	link: z.string().transform(imageFn).nullable(),
 });
 export type Track = z.infer<typeof TrackP>;
 
@@ -78,7 +82,7 @@ export const FontP = z.object({
 	/*
 	 * The url of the font.
 	 */
-	link: z.string(),
+	link: z.string().transform(imageFn),
 });
 export type Font = z.infer<typeof FontP>;
 
@@ -105,13 +109,6 @@ const WatchMovieP = z.preprocess(
 		if (!x) return x;
 
 		x.name = x.title;
-		x.link = {
-			direct: `/api/video/${x.slug}`,
-		};
-		x.fonts = x.fonts?.map((y: Font) => {
-			y.link = `/api/watch/${x.slug}/font/${y.slug}.${y.format}`;
-			return y;
-		})
 		return x;
 	},
 	ImagesP.extend({
@@ -155,7 +152,8 @@ const WatchMovieP = z.preprocess(
 		 * The links to the videos of this watch item.
 		 */
 		link: z.object({
-			direct: z.string(),
+			direct: z.string().transform(imageFn),
+			transmux: z.string().transform(imageFn),
 		}),
 	}),
 );
diff --git a/front/src/models/traits/images.ts b/front/src/models/traits/images.ts
index de3e0a25..a1273237 100644
--- a/front/src/models/traits/images.ts
+++ b/front/src/models/traits/images.ts
@@ -20,7 +20,7 @@
 
 import { z } from "zod";
 
-const imageFn = (url: string) => (url.startsWith("/api") ? url : `/api${url}`);
+export const imageFn = (url: string) => (url.startsWith("/api") ? url : `/api${url}`);
 
 export const ImagesP = z.object({
 	/**
diff --git a/front/src/player/state.tsx b/front/src/player/state.tsx
index 9db11d02..99e634e9 100644
--- a/front/src/player/state.tsx
+++ b/front/src/player/state.tsx
@@ -21,7 +21,7 @@
 import { BoxProps } from "@mui/material";
 import { atom, useSetAtom } from "jotai";
 import { useRouter } from "next/router";
-import { RefObject, useCallback, useEffect, useRef, useState } from "react";
+import { RefObject, useEffect, useRef } from "react";
 import { Font, Track } from "~/models/resources/watch-item";
 import { bakedAtom } from "~/utils/jotai-utils";
 // @ts-ignore
@@ -169,7 +169,7 @@ export const [_subtitleAtom, subtitleAtom] = bakedAtom<Track | null, { track: Tr
 			track.kind = "subtitles";
 			track.label = value.track.displayName;
 			if (value.track.language) track.srclang = value.track.language;
-			track.src = `subtitle/${value.track.slug}.vtt`;
+			track.src = value.track.link!;
 			track.className = "subtitle_container";
 			track.default = true;
 			track.onload = () => {
@@ -184,7 +184,7 @@ export const [_subtitleAtom, subtitleAtom] = bakedAtom<Track | null, { track: Tr
 				suboctoAtom,
 				new SubtitleOctopus({
 					video: player.current,
-					subUrl: `/api/subtitle/${value.track.slug}`,
+					subUrl: value.track.link!,
 					workerUrl: "/_next/static/chunks/subtitles-octopus-worker.js",
 					legacyWorkerUrl: "/_next/static/chunks/subtitles-octopus-worker-legacy.js",
 					fonts: value.fonts?.map((x) => x.link),