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Fix inconsistent extradata generated by hevc_vaapi on AMD driver

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This change is required for upstream ffmpeg 8+, because its
mp4 muxer will drop in-band PS when using codec tag hvc1.

Signed-off-by: nyanmisaka <nst799610810@gmail.com>
This commit is contained in:
nyanmisaka
2026-05-24 03:31:56 +08:00
parent 31f4ce93a6
commit 69b0b63a95
1 changed files with 6 additions and 2 deletions
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8
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
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@@ -2014,11 +2014,15 @@ namespace MediaBrowser.Controller.MediaEncoding
args += keyFrameArg + gopArg;
}
// global_header produced by AMD HEVC VA-API encoder causes non-playable fMP4 on iOS
// The in-band Parameter Sets generated by the AMD HEVC VA-API encoder is inconsistent
// with the extradata generated by ffmpeg, causing decoding failures when using hvc1.
if (string.Equals(codec, "hevc_vaapi", StringComparison.OrdinalIgnoreCase)
&& _mediaEncoder.IsVaapiDeviceAmd)
{
args += " -flags:v -global_header";
// Extracting the extradata from the in-band PS to bypass the issue.
// This can be removed once the issue is resolved in libva or Mesa.
// Transcoding is unavoidable here, so using BSF will not conflict with BSF in remuxing.
args += " -flags:v -global_header -bsf:v extract_extradata=remove=0";
}
return args;