Created attachment 8828185 [details] device-2017-01-19-102855.png User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; CNS_UA; GWX:MANAGED; AD_LOGON=4C47452E4E4554; rv:11.0) like Gecko Steps to reproduce: 1. Platform Version (M): NOS(7.0) 2. Firefox version (M): Firefox 50.1, Firefox Beta 51.0 3. Reproducible on LG Ref. device (M) : Yes / G5 device 4. Reproduce rate (M) : 10/10 5. Issue Reported (M) : Carrier 6. Issue Description (Wrong behavior) (M) : H.265/HEVC Streaming not working Firefox displays the message 'No video with supported format and MIME type found' 7. Expected behavior (M) : HEVC can be played via browser 8. Steps to reproduce (M) : http://www.h265files.com/embed-h265-video.php > play Embedded h265/HEVC Video 9. Screen Capture (M) : Yes 10. MORE INFORMATION (O): AT&T did quick test on some of your devices that support HEVC codec. AT&T are working on some test cases for HEVC streaming. It's not working on Chrome browser Please let us know Mozilla's release plan fof H.265. When it fixed, please share Engineering Report or Release info. for patches. Actual results: H.265/HEVC Streaming not working Firefox displays the message 'No video with supported format and MIME type Expected results: HEVC can be played via browser
Mozilla currently has no plans to support H.265. Our focus will be on AV1.
(In reply to Johnny Stenback (:jst, email@example.com) from comment #1) > Mozilla currently has no plans to support H.265. Our focus will be on AV1. For some impressive VP9 results refer to https://www.twoorioles.com/eve-for-vp9
Some background about AV1 https://www.youtube.com/watch?v=lzPaldsmJbk#action=share