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recorder: clear codec_tag if no target format support

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Avoiding blindly copying the codec_tag between different formats allows
us to mux packets from, say, mpegts streams to matroska, making the
recorder (dump-cache) much more usable as unsupported codec_tags can
make the muxer reject the streams.
This commit is contained in:
TheAMM 2021-05-25 00:48:40 +03:00 committed by sfan5
parent ec0006bfa1
commit 643c699f26
1 changed files with 6 additions and 0 deletions
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6
common/recorder.c
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@ -91,6 +91,12 @@ static int add_stream(struct mp_recorder *priv, struct sh_stream *sh)
if (!avp)
return -1;
// Check if we get the same codec_tag for the output format;
// otherwise clear it to have a chance at muxing
if (av_codec_get_id(priv->mux->oformat->codec_tag,
avp->codec_tag) != avp->codec_tag)
avp->codec_tag = 0;
// We don't know the delay, so make something up. If the format requires
// DTS, the result will probably be broken. FFmpeg provides nothing better
// yet (unless you demux with libavformat, which contains tons of hacks