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ingramchen/gist:e2af352bf8b40bb88890fba4f47eccd0

Created April 5, 2016 12:58
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  1. ingramchen created this gist Apr 5, 2016.
    21 changes: 21 additions & 0 deletions gistfile1.txt
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    ### 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

    * http://johnvansickle.com/ffmpeg/