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• avfilter/af_afade : shorten crossfade on too short inputs

  1er septembre, par Niklas Haas

  avfilter/af_afade: shorten crossfade on too short inputs
  
  This behavior is currently completely broken, leading to an abrupt end of the
  first audio stream. I want to generalize this filter to multiple inputs, but
  having too short input files will always represent a significant problem.
  
  I considered a few approaches for how to handle this more gracefully, but
  most of them come with their own problems; in particular when a short input
  is sandwiched between two longer ones; or when there is a sequence of short
  inputs. In the end, it's simplest to just shorten the crossfade window.
  
  I also considered (and tested) padding the input with silence, but this also
  has its own aesthetic implications and strange edge cases.
  
  See-Also: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20388
  

  • [DH] libavfilter/af_afade.c

• avfilter/af_afade : generalize pass_crossfade() signature

  1er septembre, par Niklas Haas

  avfilter/af_afade: generalize pass_crossfade() signature
  
  Prerequisite to an upcoming refactor.
  

  • [DH] libavfilter/af_afade.c

• avfilter/x86/vf_colordetect : fix alpha detect tail handling

  1er septembre, par Niklas Haas

  avfilter/x86/vf_colordetect: fix alpha detect tail handling
  
  This wrapping logic still considered any nonzero return from the ASM function
  to be the overall result, but this is not true since the addition of
  FF_ALPHA_TRANSPARENT.
  
  Fix it by only early returning if FF_ALPHA_STRAIGHT is detected.
  
  Fixes: 9b8b78a8153f9ca94b7eb9cba87442954787912a
  See-Also: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20301#issuecomment-4802
  

  • [DH] libavfilter/x86/vf_colordetect_init.c

• avcodec/version_major : remove unnecessary define for an internal function

  1er septembre, par James Almer

  avcodec/version_major: remove unnecessary define for an internal function
  
  It being avpriv and not public, it can be removed in the next bump regardless of when it
  happens.
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/exif.c
  • [DH] libavcodec/exif_internal.h
  • [DH] libavcodec/version_major.h

• avformat/movenc : remove mvex from final mp4 in hybrid_fragmented mode

  1er septembre, par Zhao Zhili

  avformat/movenc: remove mvex from final mp4 in hybrid_fragmented mode
  
  In hybrid_fragmented mode, the first moov at start should contain
  mvex tag, since it's fmp4. When writing the moov at the second time,
  it's not fmp4 any more, so mvex should be skipped.
  

  • [DH] libavformat/movenc.c
  • [DH] tests/fate/mov.mak
  • [DH] tests/ref/lavf/mov_hybrid_frag