> 在 2019年11月8日，11:58，manuelyuan <manuely...@163.com> 写道： > > I have try to make fate again and it still works, I do not know why it breaks > fate-binsub-movtextenc on your side > My steps are： > 1、./configure > 2、make fate > If I'm wrong, what should I do？ ./configure need add one parameter: --samples=fate-suite/ make fate-rsync make fate
> > > At 2019-11-08 02:21:16, "Michael Niedermayer" <mich...@niedermayer.cc> wrote: >> On Thu, Nov 07, 2019 at 05:55:18PM +0800, manuelyuan wrote: >>> From: Mengyang Yuan <manuely...@163.com> >>> >>> In this case, the input video is of dynamic frame rate and we don't want to >>> duplicate or drop frames, but the output video duration calculated by DTS is >>> incorrect, I solved it by using PTS. >>> There are many UGC videos with dynamic frame rates, which are represented by >>> PTS jumps. After transcoding with ffmpeg -vsync 0 or -vsync 2, the output >>> video duration becomes longer.By reading the code of x264/encoder/encoder.c, >>> I found that in order to predict the B frame, x264 needs to ensure that >>> there >>> are enough reference frames when DTS = 0, so the DTS of these reference >>> frames >>> will subtract the cache time. However, the cache time includes the part of >>> PTS >>> jumps, which results in the abnormal small DTS. >>> >>> Signed-off-by: Mengyang Yuan <manuely...@163.com> >>> --- >>> libavformat/movenc.c | 23 ++++++++++++++--------- >>> libavformat/movenc.h | 2 ++ >>> tests/ref/fate/movenc | 20 ++++++++++---------- >>> tests/ref/lavf/mov | 4 ++-- >>> tests/ref/lavf/mp4 | 4 ++-- >>> 5 files changed, 30 insertions(+), 23 deletions(-) >> >> breaks fate-binsub-movtextenc >> ... >> >> [mp4 @ 0x29327c0] Estimating the duration of the last packet in a fragment, >> consider setting the duration field in AVPacket instead. >> size= 1kB time=00:00:05.85 bitrate= 1.3kbits/s speed=6.03e+04x >> video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing >> overhead: 1809.803955% >> make: *** [fate-binsub-movtextenc] Error 1 >> >> [...] >> -- >> Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB >> >> Any man who breaks a law that conscience tells him is unjust and willingly >> accepts the penalty by staying in jail in order to arouse the conscience of >> the community on the injustice of the law is at that moment expressing the >> very highest respect for law. - Martin Luther King Jr > _______________________________________________ > 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". Thanks Steven _______________________________________________ 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".
