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parties/bash-notes.md

Last active June 10, 2021 22:08
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bash-notes.md

bash notes

ffmpeg

  • timelapse video 
    # setpts multiplier: smaller is faster
ffmpeg -i input.mp4 -filter:v "setpts=0.5*PTS" -an output.mp4
  • compress 
    # simple optimization
ffmpeg -i input.mp4 output
  • gif
    • simple: ffmpeg -i input.mp4 input.gif
    • optimize with convert: convert input.gif -verbose -coalesce -layers OptimizeFrame input_optframe.gif
    • final optimization with gifsicle: gifsicle -O2 input_optframe.gif -o optimized.gif
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