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[VA-API] Fix filter order (#714) 

ffmpeg is very picky about the filters to be used when using VA-API,
because most of them are incompatible. This is particularly evident when
burning-in subtitles.
This commit is contained in:
Luca Beltrame 2019-01-27 09:44:56 +01:00 committed by Bond-009
parent fee42e883c
commit ee89236fe8
1 changed files with 11 additions and 0 deletions
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11
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
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@ -1438,6 +1438,11 @@ namespace MediaBrowser.Controller.MediaEncoding
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase) && outputSizeParam.Length == 0)
{
outputSizeParam = ",format=nv12|vaapi,hwupload";
// Add parameters to use VAAPI with burn-in subttiles (GH issue #642)
if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode) {
outputSizeParam += ",hwmap=mode=read+write+direct";
}
}
var videoSizeParam = string.Empty;
@ -1741,6 +1746,12 @@ namespace MediaBrowser.Controller.MediaEncoding
filters.Add(subParam);
// Ensure proper filters are passed to ffmpeg in case of hardware acceleration via VA-API
// Reference: https://trac.ffmpeg.org/wiki/Hardware/VAAPI
if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
{
filters.Add("hwmap");
}
if (allowTimeStampCopy)
{
output += " -copyts";