ffmpeg.md

ffmpeg

• Extract part of a movie

  ffmpeg -ss 01:03:18 -i originalfile.m4v -t 00:00:04.35 -vcodec copy -acodec copy newfile.m4v
  

• Convert m4v to gif

  ffmpeg -i wake_up_unikitty.m4v -pix_fmt rgb8 -r 10 -y -s 720x360 wake_up_unikitty.gif
  

• To see title in the file:

  ffprobe -loglevel quiet -show_format input.m4v | grep title
  

• To change title in the file:

  ffmpeg -i input.m4v -codec copy -metadata title="New title" output.m4v