H264 is also supported though it's limited to the Constrained Baseline profile [0]. That said, I have been able to use an H264 stream encoded with a Main profil

H264 is also supported though it's limited to the Constrained Baseline profile [0]. That said, I have been able to use an H264 stream encoded with a Main profile that still worked in Chrome, so it could just be a strong recommendation. https://developer.mozilla.org/en-US/docs/Web/Media/Formats/WebRTC_codecs https://developer.mozilla.org/en-US/docs/Web/Media/Formats/W...