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Use source audio bitrate if requested codec is lossless

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This commit is contained in:
Shadowghost 2023-03-02 20:57:59 +01:00
parent 16f2cca882
commit 1f15724398
4 changed files with 48 additions and 44 deletions
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18
Jellyfin.Api/Controllers/DynamicHlsController.cs
View File

@ -12,6 +12,7 @@ using Jellyfin.Api.Attributes;
using Jellyfin.Api.Helpers;
using Jellyfin.Api.Models.PlaybackDtos;
using Jellyfin.Api.Models.StreamingDtos;
using Jellyfin.Extensions;
using Jellyfin.MediaEncoding.Hls.Playlist;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Configuration;
@ -1688,7 +1689,7 @@ public class DynamicHlsController : BaseJellyfinApiController
var audioBitrate = state.OutputAudioBitrate;
var audioChannels = state.OutputAudioChannels;
if (audioBitrate.HasValue)
if (audioBitrate.HasValue && !EncodingHelper.LosslessAudioCodecs.Contains(state.ActualOutputAudioCodec, StringComparison.OrdinalIgnoreCase))
{
var vbrParam = _encodingHelper.GetAudioVbrModeParam(state.OutputAudioCodec, audioBitrate.Value / (audioChannels ?? 2));
if (_encodingOptions.EnableAudioVbr && vbrParam is not null)
@ -1717,11 +1718,11 @@ public class DynamicHlsController : BaseJellyfinApiController
// dts, flac, opus and truehd are experimental in mp4 muxer
var strictArgs = string.Empty;
if (string.Equals(state.ActualOutputAudioCodec, "flac", StringComparison.OrdinalIgnoreCase)
|| string.Equals(state.ActualOutputAudioCodec, "opus", StringComparison.OrdinalIgnoreCase)
|| string.Equals(state.ActualOutputAudioCodec, "dts", StringComparison.OrdinalIgnoreCase)
|| string.Equals(state.ActualOutputAudioCodec, "truehd", StringComparison.OrdinalIgnoreCase))
var actualOutputAudioCodec = state.ActualOutputAudioCodec;
if (string.Equals(actualOutputAudioCodec, "flac", StringComparison.OrdinalIgnoreCase)
|| string.Equals(actualOutputAudioCodec, "opus", StringComparison.OrdinalIgnoreCase)
|| string.Equals(actualOutputAudioCodec, "dts", StringComparison.OrdinalIgnoreCase)
|| string.Equals(actualOutputAudioCodec, "truehd", StringComparison.OrdinalIgnoreCase))
{
strictArgs = " -strict -2";
}
@ -1755,10 +1756,9 @@ public class DynamicHlsController : BaseJellyfinApiController
}
var bitrate = state.OutputAudioBitrate;
if (bitrate.HasValue)
if (bitrate.HasValue && !EncodingHelper.LosslessAudioCodecs.Contains(actualOutputAudioCodec, StringComparison.OrdinalIgnoreCase))
{
var vbrParam = _encodingHelper.GetAudioVbrModeParam(state.OutputAudioCodec, bitrate.Value / (channels ?? 2));
var vbrParam = _encodingHelper.GetAudioVbrModeParam(actualOutputAudioCodec, bitrate.Value / (channels ?? 2));
if (_encodingOptions.EnableAudioVbr && vbrParam is not null)
{
args += vbrParam;

13
Jellyfin.Api/Helpers/DynamicHlsHelper.cs
View File

@ -9,6 +9,7 @@ using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Api.Extensions;
using Jellyfin.Api.Models.StreamingDtos;
using Jellyfin.Extensions;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
@ -223,9 +224,17 @@ public class DynamicHlsHelper
sdrVideoUrl += "&AllowVideoStreamCopy=false";
var sdrOutputVideoBitrate = _encodingHelper.GetVideoBitrateParamValue(state.VideoRequest, state.VideoStream, state.OutputVideoCodec);
var sdrOutputAudioBitrate = _encodingHelper.GetAudioBitrateParam(state.VideoRequest, state.AudioStream, state.OutputAudioChannels) ?? 0;
var sdrTotalBitrate = sdrOutputAudioBitrate + sdrOutputVideoBitrate;
var sdrOutputAudioBitrate = 0;
if (EncodingHelper.LosslessAudioCodecs.Contains(state.VideoRequest.AudioCodec, StringComparison.OrdinalIgnoreCase))
{
sdrOutputAudioBitrate = state.AudioStream.BitRate ?? 0;
}
else
{
sdrOutputAudioBitrate = _encodingHelper.GetAudioBitrateParam(state.VideoRequest, state.AudioStream, state.OutputAudioChannels) ?? 0;
}
var sdrTotalBitrate = sdrOutputAudioBitrate + sdrOutputVideoBitrate;
var sdrPlaylist = AppendPlaylist(builder, state, sdrVideoUrl, sdrTotalBitrate, subtitleGroup);
// Provide a workaround for the case issue between flac and fLaC.

16
Jellyfin.Api/Helpers/StreamingHelpers.cs
View File

@ -181,12 +181,18 @@ public static class StreamingHelpers
: GetOutputFileExtension(state, mediaSource);
}
var outputAudioCodec = streamingRequest.AudioCodec;
if (EncodingHelper.LosslessAudioCodecs.Contains(outputAudioCodec))
{
state.OutputAudioBitrate = state.AudioStream.BitRate ?? 0;
}
else
{
state.OutputAudioBitrate = encodingHelper.GetAudioBitrateParam(streamingRequest.AudioBitRate, streamingRequest.AudioCodec, state.AudioStream, state.OutputAudioChannels) ?? 0;
}
state.OutputAudioCodec = outputAudioCodec;
state.OutputContainer = (containerInternal ?? string.Empty).TrimStart('.');
state.OutputAudioBitrate = encodingHelper.GetAudioBitrateParam(streamingRequest.AudioBitRate, streamingRequest.AudioCodec, state.AudioStream, state.OutputAudioChannels);
state.OutputAudioCodec = streamingRequest.AudioCodec;
state.OutputAudioChannels = encodingHelper.GetNumAudioChannelsParam(state, state.AudioStream, state.OutputAudioCodec);
if (state.VideoRequest is not null)

45
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
View File

@ -86,6 +86,16 @@ namespace MediaBrowser.Controller.MediaEncoding
{ "truehd", 6 },
};
public static readonly string[] LosslessAudioCodecs = new string[]
{
"alac",
"ape",
"flac",
"mlp",
"truehd",
"wavpack"
};
public EncodingHelper(
IApplicationPaths appPaths,
IMediaEncoder mediaEncoder,
@ -2149,17 +2159,6 @@ namespace MediaBrowser.Controller.MediaEncoding
};
}
if (string.Equals(audioCodec, "flac", StringComparison.OrdinalIgnoreCase)
|| string.Equals(audioCodec, "alac", StringComparison.OrdinalIgnoreCase))
{
if (inputChannels >= 6)
{
return Math.Min(3584000, bitrate);
}
return Math.Min(1536000, bitrate);
}
if (string.Equals(audioCodec, "dts", StringComparison.OrdinalIgnoreCase)
|| string.Equals(audioCodec, "dca", StringComparison.OrdinalIgnoreCase))
{
@ -2172,20 +2171,10 @@ namespace MediaBrowser.Controller.MediaEncoding
};
}
if (string.Equals(audioCodec, "truehd", StringComparison.OrdinalIgnoreCase))
{
return (inputChannels, outputChannels) switch
{
(> 0, > 0) => Math.Min(outputChannels * 768000, bitrate),
(> 0, _) => Math.Min(inputChannels * 768000, bitrate),
(_, _) => Math.Min(768000, bitrate)
};
}
// Empty bitrate area is not allow on iOS
// Default audio bitrate to 128K per channel if we don't have codec specific defaults
// https://ffmpeg.org/ffmpeg-codecs.html#toc-Codec-Options
return 128000 * (outputAudioChannels ?? audioStream.Channels ?? 1);
return 128000 * (outputAudioChannels ?? audioStream.Channels ?? 2);
}
public string GetAudioVbrModeParam(string encoder, int bitratePerChannel)
@ -5867,8 +5856,7 @@ namespace MediaBrowser.Controller.MediaEncoding
}
var bitrate = state.OutputAudioBitrate;
if (bitrate.HasValue)
if (bitrate.HasValue && !LosslessAudioCodecs.Contains(codec, StringComparison.OrdinalIgnoreCase))
{
var vbrParam = GetAudioVbrModeParam(codec, bitrate.Value / (channels ?? 2));
if (encodingOptions.EnableAudioVbr && vbrParam is not null)
@ -5897,10 +5885,11 @@ namespace MediaBrowser.Controller.MediaEncoding
var bitrate = state.OutputAudioBitrate;
var channels = state.OutputAudioChannels;
var outputCodec = state.OutputAudioCodec;
if (bitrate.HasValue)
if (bitrate.HasValue && !LosslessAudioCodecs.Contains(outputCodec, StringComparison.OrdinalIgnoreCase))
{
var vbrParam = GetAudioVbrModeParam(state.OutputAudioCodec, bitrate.Value / (channels ?? 2));
var vbrParam = GetAudioVbrModeParam(outputCodec, bitrate.Value / (channels ?? 2));
if (encodingOptions.EnableAudioVbr && vbrParam is not null)
{
audioTranscodeParams.Add(vbrParam);
@ -5916,12 +5905,12 @@ namespace MediaBrowser.Controller.MediaEncoding
audioTranscodeParams.Add("-ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture));
}
if (!string.IsNullOrEmpty(state.OutputAudioCodec))
if (!string.IsNullOrEmpty(outputCodec))
{
audioTranscodeParams.Add("-acodec " + GetAudioEncoder(state));
}
if (!string.Equals(state.OutputAudioCodec, "opus", StringComparison.OrdinalIgnoreCase))
if (!string.Equals(outputCodec, "opus", StringComparison.OrdinalIgnoreCase))
{
// opus only supports specific sampling rates
var sampleRate = state.OutputAudioSampleRate;