> From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of Tomas Härdin > Sent: 2023年1月4日 22:00 > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> > Subject: Re: [FFmpeg-devel] [Internet]Re: [PATCH v2 5/7] > avcodec/mediacodecenc: remove the strategy to create DTS > > ons 2023-01-04 klockan 19:31 +0800 skrev zhilizhao(赵志立): > > > > > On Jan 4, 2023, at 18:16, Anton Khirnov <an...@khirnov.net> wrote: > > > > > > Does this mean the encoder will produce packets with > > > dts=AV_NOPTS_VALUE? > > > > MediaCodec should not encode B frames by default, so dts = pts by > > default. > > B frames can be enabled explicitly, in that case dts is > > AV_NOPTS_VALUE. > > > > Android system’s MP4 muxer works very hard to recreate dts to > > workaround > > the limitation of MediaCodec API. It create ‘valid’ but almost > > useless > > files with a lot of jitters. > > Maybe we should disallow B-frames entirely until the MediaCodec API is > fixed so as to not add to this mess?
There are some valid usecases. For example, RTP works fine without DTS. With some restriction or precondition, use can create DTS too. So I'd like to keep the feature. > > /Tomas > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
