ffmpeg | branch: master | Gabriel Hege <g+ffm...@hege.cc> | Wed Apr 16 13:51:06 2025 +0200| [6c291232cf4a1e8f176636ee07652c9164a6d73d] | committer: Nuo Mi
avformat/movenc: fix VVC encoding with leading pictures The default behavior for VVenC (since v1.10.0) is to create an IDR with leading pictures for the first picture in decoding order (POC 32). This leads to FFmpeg generating an edit list with an empty entry, skipping the leading pictures. This patch fixes the calculation for the start_pts, while the DTS is negative (as produced by vvenc). Signed-off-by: Gabriel Hege <g+ffm...@hege.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6c291232cf4a1e8f176636ee07652c9164a6d73d --- libavformat/movenc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 9392ba5370..f11633525e 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -3966,7 +3966,7 @@ static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov, int flags = 0; if (track->entry) { - if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) { + if (start_dts != track->cluster[0].dts || (start_ct != track->cluster[0].cts && track->cluster[0].dts >= 0)) { av_log(mov->fc, AV_LOG_DEBUG, "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n", @@ -6928,7 +6928,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt) trk->flags |= MOV_TRACK_CTTS; trk->cluster[trk->entry].cts = pkt->pts - pkt->dts; trk->cluster[trk->entry].flags = 0; - if (trk->start_cts == AV_NOPTS_VALUE) + if (trk->start_cts == AV_NOPTS_VALUE || (pkt->dts <= 0 && trk->start_cts > pkt->pts - pkt->dts)) trk->start_cts = pkt->pts - pkt->dts; if (trk->end_pts == AV_NOPTS_VALUE) trk->end_pts = trk->cluster[trk->entry].dts + _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
