Video format or resolution limitations

I’m trying a Peertube 2.4.0 node, and have an issue with uploaded videos when trying to play then on Firefox
(« The media playback was aborted due to a corruption problem or because the media used features your browser did not support »)

320x240 MP4 25fps: fails
320x240 MP4 30fps: fails
450x360 MP4 30fps: fails
848x480 MP4 25fps: plays
1280x720 MP4 24fps: plays
1280x720 MP4 25fps: plays

Same behaviour with: Firefox 52, Firefox 78
All videos play with: Midori 7, Iridium 2019.04

Peertube has configured 360p and 720p as resolutions to generate (is this related to issue?).

Please open an issue on GitHub for easier tracking of this issue.

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