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• FFmpeg exit with error code 1 when using .bat file

  30 avril 2022, par Taqi Vaheed

  I use a .bat file to batch attach audio tracks to movies. Everything was good but in last days the ffmpeg stopped working correctly. When I restart the pc it work again but after some task the error come back. I tried to reinstall the windows but the problem does not solved.

  


  here is my ffmpeg code :

  


  for %%a in ("*.mp4*") do ffmpeg -y -i "%%a"^
 -itsoffset 0^
 -i %%~na.mp3 -i cover.jpg^
 -map 2 -map 0:v:0 -disposition:0 attached_pic^
 -map 1:a:0 -disposition:a:0 default^
 -map 0:a:0 -disposition:a:1 none -sn^
 -metadata title=""^
 -metadata:s:a:0 handler_name="Persian"^
 -metadata:s:a:1 handler_name="English"^
 -metadata:s:v:0 handler_name="English"^
 -metadata:s:a:0 language=per^
 -metadata:s:a:1 language=eng^
 -c copy "Final\%%~na.mp4"


  


• lavfi : add ICC profile support via lcms2

  9 avril 2022, par Niklas Haas

  lavfi : add ICC profile support via lcms2
  This introduces an optional dependency on lcms2 into FFmpeg. lcms2 is a
  
  widely used library for ICC profile handling, which apart from being
  
  used in almost all major image processing programs and video players,
  
  has also been deployed in browsers. As such, it's both widely available
  
  and well-tested.
  Add a few helpers to cover our major use cases. This commit merely
  
  introduces the helpers (and configure check), even though nothing uses
  
  them yet.
  It's worth pointing out that the reason the cmsToneCurves for each
  
  AVCOL_TRC are cached inside the context, is because constructing a
  
  cmsToneCurve requires evaluating the curve at 4096 (by default) grid
  
  points and constructing a LUT. So, we ideally only want to do this once
  
  per curve. This matters for e.g. ff_icc_profile_detect_transfer, which
  
  essentially compares a profile against all of these generated LUTs.
  
  Re-generating the LUTs for every iteration would be unnecessarily
  
  wasteful.
  The same consideration does not apply to e.g. cmsCreate*Profile, which
  
  is a very lightweight operation just involving struct allocation and
  
  setting a few pointers.
  The cutoff value of 0.01 was determined by experimentation. The lowest
  
  "false positive" delta I saw in practice was 0.13, and the largest
  
  "false negative" delta was 0.0008. So a value of 0.01 sits comfortaby
  
  almost exactly in the middle.
  Signed-off-by : Niklas Haas <git@haasn.dev>
  

  • [DH] configure
  • [DH] libavfilter/fflcms2.c
  • [DH] libavfilter/fflcms2.h

• lavfi : add vf_iccgen for generating ICC profiles

  9 avril 2022, par Niklas Haas

  lavfi : add vf_iccgen for generating ICC profiles
  This filter is designed to specifically cover the task of generating ICC
  
  profiles (and attaching them to output frames) on demand. Other tasks,
  
  such as ICC profile loading/stripping, or ICC profile application, are
  
  better left to separate filters (or included into e.g. vf_setparams).
  Signed-off-by : Niklas Haas <git@haasn.dev>
  

  • [DH] configure
  • [DH] doc/filters.texi
  • [DH] libavfilter/Makefile
  • [DH] libavfilter/allfilters.c
  • [DH] libavfilter/vf_iccgen.c