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• Why failes ffmpeg with "Failed to inject frame into filter network : Internal bug, should not have happened" ?

  17 octobre 2023, par StackOverRigge

  I want to convert a MP4 video file into an animated gif file using ffmpeg. I am trying to do this in two steps :

  


  

  1. Create a palette image

  


  2. Convert the MP4 with the help of the palette image to a GIF file

  


  


  I'm using ffmpeg 6.0 essentials_build.

  


  First, I create a palette image :

  


  ffmpeg -v warning -i video.mp4 -vf "fps=15,scale=1366:768:flags=lanczos,palettegen=stats_mode=diff" -y palette.png


  


  Then, I'm trying to convert the MP4 to GIF :

  


  ffmpeg -i video.mp4 -i palette.png -lavfi "fps=15,scale=1366:768:flags=lanczos,paletteuse=dither=bayer:bayer_scale=5:diff_mode=rectangle" -y video.gif


  


  This command ends in this error message :

  


  Error while filtering: Internal bug, should not have happeneditrate=4279.9kbits/s speed=0.742x
Failed to inject frame into filter network: Internal bug, should not have happened
Error while processing the decoded data for stream #0:0


  


• libswresample/swresample : avoid s16p internal transfer format

  5 janvier 2023, par Paul B Mahol

  libswresample/swresample : avoid s16p internal transfer format
  Instead use float one by default for sample rate conversions.
  
  The s16p internal transfer format produces visible and hearable
  
  quantization artifacts.
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  for S8 we continue to use S16 as it should have enough precision
  
  Fate is adjusted so bitexactness is maintained between mips/arm/x86
  
  if more tests became bit-inexact on some platform, the same change
  
  can be done to them
  The use of higher precision and float intermediates inevitably
  
  leads to more differences between platforms.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libswresample/swresample.c
  • [DH] tests/fate/acodec.mak
  • [DH] tests/fate/lavf-container.mak

• avformat/internal : Don't auto-include os_support.h

  31 août 2023, par Andreas Rheinhardt

  avformat/internal : Don't auto-include os_support.h
  It includes various Windows-specific headers when compiling
  
  for Windows and these sometimes cause issues : E.g. winbase.h
  
  defines IGNORE, which clashes with a macro used in the Matroska
  
  muxer (since 884653ee5be03ed38db957c14fad51b300611c8c) and demuxer.
  This header provides fallback defines for various stuff that is
  
  mostly not used directly by (de)muxers at all :
  
  mkdir, rename, rmdir, unlink, access, poll, pollfd, nfds_t,
  
  closesocket, socklen_t, fstat, stat, lseek, SHUT_(RD|WR|RDWR)
  
  and various POLL* constants.
  Ergo fix this issue by not auto-including this header in lots
  
  of places via an inclusion in internal.h and instead include
  
  it everywhere where the above stuff is used (most of these
  
  translation units already included os_support.h).
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavformat/img2dec.c
  • [DH] libavformat/internal.h
  • [DH] libavformat/rtsp.h
  • [DH] libavformat/utils.c