git.videolan.org Git - ffmpeg.git/rss log

Les articles publiés sur le site

• avformat/movenc : disallow buggy flags combination

  26 mai, par Gyan Doshi

  avformat/movenc: disallow buggy flags combination
  
  Use of hybrid_fragmented and faststart together can result in files with
  loss of sync and bitstream parsing errors upon playback.
  

  • [DH] libavformat/movenc.c

• avfilter/vf_mcdeint : add yuv444p support to mcdeint

  25 mai, par Ethan Halsall

  avfilter/vf_mcdeint: add yuv444p support to mcdeint
  
  Signed-off-by: Ethan Halsall <ethanhalsall11@augustana.edu>
  Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavfilter/vf_mcdeint.c

• avcodec/ffv1enc : Fix explicitly set -slicecrc 2

  25 mai, par Andreas Rheinhardt

  avcodec/ffv1enc: Fix explicitly set -slicecrc 2
  
  crcref needs to be set properly iff ec is two, regardless
  of whether it has been explicitly set by the user or set
  by default based on level/version.
  
  Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/ffv1enc.c

• avformat/matroskadec : Fix VfW extradata size

  25 mai, par Andreas Rheinhardt

  avformat/matroskadec: Fix VfW extradata size
  
  The structure is padded to an even length with an internal
  size field to indicate the real size.
  The matroska-matroska-display-metadata test (writing FFV1
  in VFW mode) was affected by this.
  It should also fix ticket #11613.
  
  Reviewed-by: compn <ff@hawaiiantel.net>
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavformat/matroskadec.c
  • [DH] tests/ref/fate/matroska-mastering-display-metadata

• avformat/matroskaenc : Use native id V_FFV1 instead of V_MS/VFW/FOURCC

  25 mai, par Andreas Rheinhardt

  avformat/matroskaenc: Use native id V_FFV1 instead of V_MS/VFW/FOURCC
  
  Up until now, our muxer wrote FFV1 in video-for-windows
  compatibility mode out of concern for old demuxers that
  only support that (whereas the demuxer accepts V_FFV1).
  This commit switches to using native mode, because
  a) V_FFV1 is around long enough so that old demuxers
  should not be an issue (support in FFmpeg has been added
  in commit 9ae762da7e256aa4d3b645c614fcd1959e1cbb8d
  in March 2017/FFmpeg 3.3),
  b) using native mode uses fewer bytes for the CodecPrivate,
  c) the VfW extradata is zero-padded to an even length
  if necessary, but our demuxer forgot to undo the padding
  until very recently (92e310eb82e04713e55d248b65c22f0eb95afada),
  so that there are many versions of our demuxer around that
  are buggy wrt VFW, but not V_FFV1.
  This affects the FFV1 extradata checksums, specifically
  the (experimental) version 4 files with error check version 2*
  as created by
  ffmpeg -i ../fate-suite/mpeg2/sony-ct3.bs -c:v ffv1 \
  -slices 16 -frames 1 -level 4 -strict experimental ffv1.mkv
  VFW files like the above created by this muxer before this patch
  would not work with an old demuxer.
  
  *: Without error check version 2, the CRC for the whole extradata
  is zero, which is not changed by appending a zero byte.
  
  Reviewed-by: compn <ff@hawaiiantel.net>
  Reviewed-by: Dave Rice <dave@dericed.com>
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavformat/matroskaenc.c
  • [DH] tests/ref/fate/matroska-mastering-display-metadata