Why is mp4 not a supported format for Desktop

[WiFisunset]

I'd like to contribute to this project, but I'm curious as to why mp4 is not a supported format for Desktop.

[Frosty-J]

H.264, H.265, and AAC are non-free codecs. While it's unlikely anyone would get into trouble for not paying royalties, why take the risk? VP9 can provide more efficient compression than H.264 anyway, AV1 better still if #83 gets fixed.

If you build gdx-video yourself, you can enable it here:
https://github.com/libgdx/gdx-video/blob/6b09bc1/gdx-video-desktop/build.gradle#L72-L73