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evasilev/gist:ebef7cc2615aa1fb573f1ad024edd2bd

Forked from ingramchen/gist:e2af352bf8b40bb88890fba4f47eccd0
Last active April 19, 2022 18:14
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ffmpeg convert gif to mp4, for best cross browser compatibility
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gistfile1.md

Full command line options

ffmpeg -f gif -i FOO.gif -pix_fmt yuv420p -c:v libx264 -movflags +faststart -filter:v crop='floor(in_w/2)*2:floor(in_h/2)*2' BAR.mp4

Notie

  • output mp4 is encoded with h264, support Firefox/Chrome/Safari in Windows, Mac OSX, Android, and iOS.
  • one mp4 file for all platforms, there is no need to encode an extra webm movie, which encoding speed is pretty slow.
  • format as yuv420p for Firefox compatibility, the downside is color becomes less-saturate than original gif.
  • yuv420p only support even width/height, so crop filter is required
  • -movflags +faststart flags are optimized for online view in browser
  • compression ratio typically 10:1, pretty awesome. note that if original gif is < 512KB, convert as mp4 is less efficient.

Obtain static binary ffmpeg

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