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ffmpeg_notes [2019-09-22 17:08] – [concat] nikffmpeg_notes [2021-02-07 10:00] nik
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====
Line 155: Line 158:
  
 ====etc==== ====etc====
 +  * tuning x265 output -> http://forum.doom9.org/showthread.php?t=172458
   * further examples -> https://hhsprings.bitbucket.io/docs/programming/examples/ffmpeg/index.html   * further examples -> https://hhsprings.bitbucket.io/docs/programming/examples/ffmpeg/index.html
   * An ffmpeg and SDL Tutorial or How to Write a Video Player in Less Than 1000 Lines (2015) http://dranger.com/ffmpeg/   * An ffmpeg and SDL Tutorial or How to Write a Video Player in Less Than 1000 Lines (2015) http://dranger.com/ffmpeg/
   * various examples -> https://oioiiooixiii.blogspot.com/   * various examples -> https://oioiiooixiii.blogspot.com/
  
  • ffmpeg_notes.txt
  • Last modified: 2023-08-27 12:27
  • by nik