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rastandy/ffmpeg GIF to MP4.MD

Forked from gvoze32/ffmpeg GIF to MP4.MD
Created October 26, 2022 17:09
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Convert animated GIF to MP4 using ffmpeg in terminal.
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ffmpeg GIF to MP4.MD

To convert animation GIF to MP4 by ffmpeg, use the following command

ffmpeg -i animated.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.mp4

Description

movflags – This option optimizes the structure of the MP4 file so the browser can load it as quickly as possible.

pix_fmt – MP4 videos store pixels in different formats. We include this option to specify a specific format which has maximum compatibility across all browsers.

vf – MP4 videos using H.264 need to have a dimensions that are divisible by 2. This option ensures that’s the case.

Note

Add "-r 30" to specify the frame rate 30 frames/sec. So if you want 10 sec movie with frame rate 30/sec, you make GIF animation that has total 300 frames, then use it.

Features

  • 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.
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