starred/jellyfin-jellyfin-1
1
0
Fork 0
mirror of https://github.com/jellyfin/jellyfin.git synced 2025-12-16 05:53:03 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add audio vbr calculation

Browse Source
This commit is contained in:
knackebrot
2022-11-07 00:15:04 +01:00
committed by Shadowghost
parent 3e74377036
commit aa99aaebc4
3 changed files with 91 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

64
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
View File

@@ -2160,6 +2160,47 @@ namespace MediaBrowser.Controller.MediaEncoding
return 128000;
}
public string GetAudioVbrModeParam(string encoder, int bitratePerChannel)
{
if (encoder == "libfdk_aac")
{
return " -vbr:a " + bitratePerChannel switch
{
< 32000 => "1",
< 48000 => "2",
< 64000 => "3",
< 96000 => "4",
_ => "5"
};
}
if (encoder == "libmp3lame")
{
return " -qscale:a " + bitratePerChannel switch
{
< 48000 => "8",
< 64000 => "6",
< 88000 => "4",
< 112000 => "2",
_ => "0"
};
}
if (encoder == "libvorbis")
{
return " -qscale:a " + bitratePerChannel switch
{
< 40000 => "0",
< 56000 => "2",
< 80000 => "4",
< 112000 => "6",
_ => "8"
};
}
return null;
}
public string GetAudioFilterParam(EncodingJobInfo state, EncodingOptions encodingOptions)
{
var channels = state.OutputAudioChannels;
@@ -5801,7 +5842,15 @@ namespace MediaBrowser.Controller.MediaEncoding
if (bitrate.HasValue)
{
args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture);
string vbrParam;
if (encodingOptions.EnableAudioVbr && (vbrParam = GetAudioVbrModeParam(codec, bitrate.Value / channels ?? 2)) != null)
{
args += vbrParam;
}
else
{
args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture);
}
}
if (state.OutputAudioSampleRate.HasValue)
@@ -5819,13 +5868,22 @@ namespace MediaBrowser.Controller.MediaEncoding
var audioTranscodeParams = new List<string>();
var bitrate = state.OutputAudioBitrate;
var channels = state.OutputAudioChannels;
if (bitrate.HasValue)
{
audioTranscodeParams.Add("-ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture));
string vbrParam;
if (encodingOptions.EnableAudioVbr && (vbrParam = GetAudioVbrModeParam(state.OutputAudioCodec, bitrate.Value / channels ?? 2)) != null)
{
audioTranscodeParams.Add(vbrParam);
}
else
{
audioTranscodeParams.Add("-ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture));
}
}
if (state.OutputAudioChannels.HasValue)
if (channels.HasValue)
{
audioTranscodeParams.Add("-ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture));
}