I have a sample.mp4 which is currently not playable on VLC or media player and I've checked the FFmpeg values and get the below result? Any help would be greatly appreciated.

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  • It would help if you would post your ffmpeg command. Preferably as text. Nov 12, 2020 at 19:02
  • Apologies. it was just ffmpeg -i sample.mp4 Nov 13, 2020 at 13:44

1 Answer 1


It is all about the proprietary codec, i.e. IMM5. The VLC and FFMPEG can't deal with it except patching the avcodec manually using https://patchwork.ffmpeg.org/project/ffmpeg/patch/[email protected]/. Of course, you need to re-compile the ffmpeg using the IMM5 supported avcodec lib.

Good luck.

  • Thank you! I'll try my luck. Jan 4, 2021 at 10:23

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