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ffmpeg_notes [2019-09-22 17:08] – nikffmpeg_notes [2020-05-07 11:35] – nik
Line 23: Line 23:
 ''file 'dust_and_shadow_black.mp4' ''\\ ''file 'dust_and_shadow_black.mp4' ''\\
  
-then...+then...\\
 ''ffmpeg -f concat -i files.txt -c copy dust_and_shadow_30min.mp4'' ''ffmpeg -f concat -i files.txt -c copy dust_and_shadow_30min.mp4''
  
Line 144: Line 144:
 ''ffmpeg -i clip.mov -i clip2.mov  -filter_complex vstack merged.mov'' ''ffmpeg -i clip.mov -i clip2.mov  -filter_complex vstack merged.mov''
  
 +====extract audio from mp4====
 +
 +''ffmpeg -i input.mp4 -b:a 320K -vn output-audio.mp3''
  
 ====avoid audio/video reencode==== ====avoid audio/video reencode====
  • ffmpeg_notes.txt
  • Last modified: 2023-08-27 12:27
  • by nik