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Add remuxing support for VP9

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Add VP9 as a valid HLS format to enable remuxing. This is useful when audio processing is required, but the VP9 video can be passed as-is to avoid unnecessary video transcoding.

No VP9 encoder is enabled and should not be enabled. AV1 and HEVC should be preferred over VP9 if video transcoding is required.

Signed-off-by: gnattu <gnattuoc@me.com>
This commit is contained in:
gnattu
2024-05-05 10:41:43 +08:00
parent d318010c67
commit 5df171b3f9
3 changed files with 78 additions and 1 deletions
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Jellyfin.Api/Helpers/HlsCodecStringHelpers.cs
+62
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@@ -182,6 +182,68 @@ public static class HlsCodecStringHelpers
return result.ToString();
}
/// <summary>
/// Gets a VP9 codec string.
/// </summary>
/// <param name="width">Video width.</param>
/// <param name="height">Video height.</param>
/// <param name="pixelFormat">Video pixel format.</param>
/// <param name="framerate">Video framerate.</param>
/// <param name="bitDepth">Video bitDepth.</param>
/// <returns>The VP9 codec string.</returns>
public static string GetVp9String(int width, int height, string pixelFormat, float framerate, int bitDepth)
{
// refer: https://www.webmproject.org/vp9/mp4/
StringBuilder result = new StringBuilder("vp09", 13);
var profileString = pixelFormat switch
{
"yuv420p" => "00",
"yuvj420p" => "00",
"yuv422p" => "01",
"yuv444p" => "01",
"yuv420p10le" => "02",
"yuv420p12le" => "02",
"yuv422p10le" => "03",
"yuv422p12le" => "03",
"yuv444p10le" => "03",
"yuv444p12le" => "03",
_ => "00"
};
var lumaPictureSize = width * height;
var lumaSampleRate = lumaPictureSize * framerate;
var levelString = lumaPictureSize switch
{
<= 0 => "00",
<= 36864 => "10",
<= 73728 => "11",
<= 122880 => "20",
<= 245760 => "21",
<= 552960 => "30",
<= 983040 => "31",
<= 2228224 => lumaSampleRate <= 83558400 ? "40" : "41",
<= 8912896 => lumaSampleRate <= 311951360 ? "50" : (lumaSampleRate <= 588251136 ? "51" : "52"),
<= 35651584 => lumaSampleRate <= 1176502272 ? "60" : (lumaSampleRate <= 4706009088 ? "61" : "62"),
_ => "00" // This should not happen
};
if (bitDepth != 8
&& bitDepth != 10
&& bitDepth != 12)
{
// Default to 8 bits
bitDepth = 8;
}
result.Append('.').Append(profileString).Append('.').Append(levelString);
var bitDepthD2 = bitDepth.ToString("D2", CultureInfo.InvariantCulture);
result.Append('.')
.Append(bitDepthD2);
return result.ToString();
}
/// <summary>
/// Gets an AV1 codec string.
/// </summary>