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MSE on Linux does not yet support MP4/H.264. If your Linux system has an H.264 decoder, you can try flipping this about:config pref: media.mediasource.mp4.enab
by cpeterso 11y ago
MSE on Linux does not yet support MP4/H.264. If your Linux system has an H.264 decoder, you can try flipping this about:config pref:
media.mediasource.mp4.enabled = true