RESOLVED WORKSFORME 218749
[GTK] Unable to play vimeo video https://vimeo.com/53101672 
https://bugs.webkit.org/show_bug.cgi?id=218749
Summary [GTK] Unable to play vimeo video https://vimeo.com/53101672
Sergio Villar Senin
Reported 2020-11-10 06:37:57 PST
I press play, then an spinning animation starts and it gets stuck in it.
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Enrique Ocaña
Comment 1 2021-04-26 10:51:50 PDT
I can reproduce this on Epiphany 3.36.4 (WebKitGTK 2.30.6), but can't reproduce it in MiniBrowser on latest WebKit (@276497, from Apr 23 2021). From the GStreamer logs, I can see that the webpage asks is the browser supports "video/mp4; codecs="hvc1"" and "video/mp4; codecs="av01.0.31M.08.0.110.01.01.01.0"", and both are unsupported in my local Epiphany. The webpage doesn't make any other attempt to ask for other codecs. However, in MiniBrowser (from Flatpak) "video/mp4; codecs="av01.0.31M.08.0.110.01.01.01.0"" *is* supported. The webpage also asks for "audio/mp4; codecs="mp4a.40.2"" and "video/mp4; codecs="avc1.4D401E"", which also are supported. The codecs used in the end by MSE are mp4a and AVC. I'm closing this bug as WORKSFORME.
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