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• avutil/hwcontext_d3d12va : cast the input pointer array argument on av_image_copy...

  21 décembre 2023, par James Almer

  avutil/hwcontext_d3d12va : cast the input pointer array argument on av_image_copy calls
  Removes -Wincompatible-pointer-types warnings.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavutil/hwcontext_d3d12va.c

• dfa : Put our pointer check back.

  4 mai 2013, par Michael Niedermayer

  dfa : Put our pointer check back.
  The reimplementation by Libav does not prevent out of array
  
  writes, even though it looks like it does at a quick glance.
  No FFmpeg releases are affected by this
  See : d1c95d2ce39560e251fdb14f4af91b04fd7b845c
  
       3623589edc7b1257bb45aa9e52c9631e133f22b6
  
       740ebe468c0567cac03ef7e6b4b9fd0253b97da2
  Found-by : Mateusz "j00ru" Jurczyk and Gynvael Coldwind
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/dfa.c

• Use specific channels from specific streams for the final stream using FFMPEG [closed]

  9 juin 2024, par Kazu-kun

  I want to create a 5.1ch audio stream from a 2ch audio stream. However I want to put a negative delay to LFE, SL and SR channels since they will be played from my bluetooth speaker, so I want to make up for the delay by giving it a negative delay.

  


  


  ffmpeg -itsoffset 0.1 -i input.mkv -i input.mkv

  


  -filter_complex “

  


  [1:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [0:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [orig5_1][delayed5_1]amerge=inputs=2,pan=5.1(side)|FL=c6|FR=c7|LFE=c2|SL=c3|SR=c4[a]”

  


  -map "[a]" -map 0:v -map 0:s -c:v copy -c:a flac -c:s copy output.mkv

  


  


  I tried taking the same input twice with the first one being delayed by 0.1 secs. With the delayed input a 5.1 audio is created and with the original another 5.1 audio is created as well. Then the two audio streams are merged with amerge and combined into a single 5.1 audio by taking delayed channels for FL and FR(These will be played from my MacBook) and by taking original channels for LFE, SL and SR(These will be played from my bluetooth JBL). Finally the video and subs streams are taken from the delayed.

  


  The above command gave a "pipe pipe pipe dqoute" error and when I entered the command again it said :

  


  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : command not found : -map

  


  


  Please give me a command for my requirement !