233036 2021-11-12 03:06:51 -0800 Safari 15.1 H264 FullHD video encode/decode fails 2022-03-04 04:10:21 -0800 1 1 1 Unclassified WebKit WebRTC Safari 15 Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 milen.yordanov youennf devalevenkatesh eric.carlson ews-watchlist glenn jer.noble philipj sergio webkit-bug-importer youennf oldest_to_newest 1814385 0 milen.yordanov 2021-11-12 03:06:51 -0800 Tested on: macOS: 12.0.1, Mac mini (2018) Safari: Version 15.1 (17612.2.9.1.20) WebCam: Logitech C910 Steps to reproduce the issue: 1) Go to https://webrtc.github.io/samples/src/content/peerconnection/constraints/ 2) Change the resolution settings to FullHD (1920x1080). ``` "video": { "width": { "min": "1851", "max": "4096" }, "height": { "min": "1053", "max": "2160" } } ``` 3) Click the button 'Get Media' 4) Click the button 'Connect' The result is: Output video is black ----- Some observations: 1) There is a Safari settings: Developer > Experimental Features > Webrtc H264 LowLatency Encoder. This is enabled by default. If it is turned OFF then the above scenario (H264 with FullHD) works fine. 2) If the resolution is up to HD (1280x720) then the above scenario works fine. Anything above 1280x720 causes black output. 3) If the codec is VP8 or VP9 then there is no problem with FullHD video. 4) The same issue happens also if the video is encoded on desktop Safari 15.1 and decoded on mobile Safari 15.1 (iOS). 5) The issue is not present if the video is encoded on desktop Safari 15.1 and decoded on desktop Chrome 95. H264 with FullHD works fine is this case. 1814389 1 milen.yordanov 2021-11-12 03:26:05 -0800 It is kinda hard to set exact FullHD settings with the sample above. Anything above 1280x720 and below 1920x1080 seems to reproduce it. In my case { "audio": true, "video": { "width": { "min": "300", "max": "1887" }, "height": { "min": "200", "max": "1015" } } } results in: "Video dimensions: 1887x1015px" 1815873 2 youennf 2021-11-17 02:06:17 -0800 <rdar://80345048> 1815874 3 444500 youennf 2021-11-17 02:08:57 -0800 Created attachment 444500 Patch 1815917 4 ews-feeder 2021-11-17 06:52:29 -0800 Committed r285928 (244337@main): <https://commits.webkit.org/244337@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444500. 1848244 5 youennf 2022-03-04 04:10:21 -0800 *** Bug 236870 has been marked as a duplicate of this bug. *** 444500 2021-11-17 02:08:57 -0800 2021-11-17 06:52:30 -0800 Patch bug-233036-20211117110855.patch text/plain 4586 youennf U3VidmVyc2lvbiBSZXZpc2lvbjogMjg1Nzk5CmRpZmYgLS1naXQgYS9Tb3VyY2UvVGhpcmRQYXJ0 eS9saWJ3ZWJydGMvQ2hhbmdlTG9nIGIvU291cmNlL1RoaXJkUGFydHkvbGlid2VicnRjL0NoYW5n ZUxvZwppbmRleCA3N2FlNzU3MGNjMzE5ZmQyODUxYmYxNzU3MzNhZmI1OTcwNWI5NWU4Li43Y2Ex NmRiODIwOTRlNTFjOTQyMzQzMGQwYzE0NzQwN2M0YzYwMTE2IDEwMDY0NAotLS0gYS9Tb3VyY2Uv VGhpcmRQYXJ0eS9saWJ3ZWJydGMvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9UaGlyZFBhcnR5L2xp YndlYnJ0Yy9DaGFuZ2VMb2cKQEAgLTEsMyArMSwxNyBAQAorMjAyMS0xMS0xNyAgWW91ZW5uIEZh YmxldCAgPHlvdWVubkBhcHBsZS5jb20+CisKKyAgICAgICAgU2FmYXJpIDE1LjEgSDI2NCBGdWxs SEQgdmlkZW8gZW5jb2RlL2RlY29kZSBmYWlscworICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0 Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MjMzMDM2CisgICAgICAgIDxyZGFyOi8vODAzNDUwNDg+CisK 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