Recherche avancée

Sur d’autres sites (6321)

• Split .MOV into frames and edit while preserving audio

  7 août 2015, par Devin

  I have a requirement to take a .mov file from a camera and apply a chroma key filter to it. The app currently handles still images with chroma through NetImageLibrary. I was hoping to use something like ffmpeg to split the .mov into frames, run them through the chroma filter and then reassemble them into the .mov or something similar. I have a feeling this will destroy the audio which I need to preserve. Is there a different way to do this that will keep the audio but allow me to apply the green screen chroma key ?

  Thanks !

• lavc/av1dec : use frame split bsf

  15 décembre 2021, par Fei Wang

  lavc/av1dec : use frame split bsf
  Split packed data in case of its contains multiple show frame in some
  
  non-standard bitstream. This can benefit decoder which can decode
  
  continuously instead of interrupt with unexpected error.
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] libavcodec/av1dec.c

• Can't split 24bit flac files on the command line [closed]

  21 mars 2023, par Martin

  I am trying to export a 24bit flac file in my ubuntu terminal. I've tried two different methods, but neither work.

  


  Method 1 : shntool

  


  when I run this command :
shntool split -f times.cue -O always -o lowq_full_silence.flac

  


  where lowq_full_silence.flac was rendered in audacity as a flac file with level=0 and bit depth=16 bit, my command works.

  


  but if i run this command :

  


  shntool split -f times.cue -O always -o full_hq.flac

  


  where full_hq.flac has level=8 and bit depth=24 bit
The command fails :

  


  shntool [split]: warning: unsupported format 0xfffe (Unknown) while processing file: [full_hq.flac]
shntool [split]: error: cannot continue due to error(s) shown above


  


  https://bugs.launchpad.net/ubuntu/+source/shntool/+bug/2000794

  


  Method 2 : ffmpeg

  


  Trying to split the flac file with comma separated 'split points' input

  


  ffmpeg -i "full_hq.flac" -c copy -map 0 -f segment -segment_times "22,441,556,559" "%d_output.flac"

  


  But the output from this ffmpeg command has broken length metadata :

  


  https://trac.ffmpeg.org/ticket/4905

  


  Is there a better way to split a high quality 24bit flac file into individual segments, where each exported segment file has correct length metadata ?

  


  Files :
https://file.io/lvGTUEgQArb7