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• fftools/ffmpeg_demux : Don't use fake object with av_opt_eval

  6 octobre 2023, par Andreas Rheinhardt

  fftools/ffmpeg_demux : Don't use fake object with av_opt_eval
  The av_opt_eval family of functions emits errors messages on error
  
  and can therefore not be used with fake objects when the AVClass
  
  has a custom item_name callback. The AVClass for AVCodecContext
  
  has such a custom callback (it searches whether an AVCodec is set
  
  to use its name). In practice it means that whatever is directly
  
  after the "cc" pointer to the AVClass for AVCodec in the stack frame
  
  of ist_add() will be treated as a pointer to an AVCodec with
  
  unpredictable consequences.
  Fix this by using an actual AVCodecContext instead of a fake object.
  Reviewed-by : Anton Khirnov <anton@khirnov.net>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] fftools/ffmpeg_demux.c

• how to encoded a 10bit .tif file into an HDR video by ffmpeg in command line [closed]

  6 juin 2024, par ziyuan

  how can i encoded a RGB 10 bit tif file into a hdr video by ffmpeg ?

  


  and one more question : should the input tiff must be 16bit big- or little- endian ?

  


  i have try the method here : How can I encode RGB images into HDR10 videos in ffmpeg command-line ?
,the same command and setting as the method. However i got this : code 1026 : YUV color family cannot have RGB matrix coefficients

  


  here is the tiff file i have tried :https://drive.google.com/file/d/1G8oYf9-FQJJPNUxwB0_FmlvBaMnUhCVL/view?usp=drive_link

  


  and i found that :
the procedure information it seems like the ffmpeg automatically set the output format as gbrp16le even when i set the -pix_fmt yuv420p10le.

  


• Usurper of FATE

  31 juillet 2010, par Multimedia Mike — FATE Server

  Mans sent a message to the FFmpeg-devel list today :

  A new FATE

  Mike’s FATE system has done a great job over the last few years. It
  is however beginning to prove inadequate in various ways :

  [various shortcomings already dissected at length on this very blog]

  To address the above-mentioned issues, I have been working on a
  replacement system which is now ready to be announced.

  Check it out : http://fate.ffmpeg.org/.

  Considering that he just obsoleted something I’ve poured a lot of time and energy into over the last 2.5 years, is my first reaction to this news supposed to be unbridled joy ? Hey, I’m already on record as stating that I wouldn’t mind throwing away all of FATE if there was a better alternative.

  I’m not certain but I’m pretty sure that at this point, the original FATE server is practically obsolete. Mans is already testing all of his configurations as well as the configs I test. As soon as the other FATE installations switch over to the new server, I should be able to redirect fate.multimedia.cx -> fate.ffmpeg.org, sell most of my computers, and spend more time with my family.

  Thanks, Mans !