Firefox dropped H264 support 1 year ago because of Google Play Store policies. This codec was required for interacting with iOS devices which did not have VP8.

Firefox dropped H264 support 1 year ago because of Google Play Store policies. This codec was required for interacting with iOS devices which did not have VP8. However, VP8 has been added since iOS 12.1, so it might be possible to use it now across all platforms. - https://bugzilla.mozilla.org/show_bug.cgi?id=1548679 https://bugzilla.mozilla.org/show_bug.cgi?id=1548679 - https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/68#Media_Web_Audio_and_WebRTC https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Rel...