[Webkit-unassigned] [Bug 245850] [GStreamer] Video playback is highly unreliable, slow, and buggy

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245850

--- Comment #2 from tri.voxel at gmail.com ---
Update: this bug only focuses on the following issue:

System:
Operating System: Fedora 36 (with Gnome on Wayland)
CPU: AMD Ryzen 7 3700X
GPU: AMD Radeon RX 5700 XT
Gnome Web version: 42.2
WebKitGTK version: 2.38.0

I used a popular WebKitGTK browser known as Gnome Web (formerly Epiphany) as my primary browser for several months. Besides some occasional performance hitches, it has been a good experience. That is, however, ignoring the glaring issue of video playback. I've noticed a number of issues with video playback including but not limited to using the H.264, VP9, and AV1 codecs.

A good example is YouTube. In YouTube, you have a choice of playback between AV1 and VP9 by going to https://www.youtube.com/account_playback and setting the "AV1 Setting" to "Always prefer AV1". This will make certain 4K video playback run at an unacceptable framerate, especially unacceptable when you consider my computer is a high spec gaming computer. Here is an example of an AV1 video that runs fine in VP9 mode at 4K, and poorly in AV1 mode in 4K: https://youtu.be/VnBYQrPacqg

Note: It seems that some but not all content on YouTube now supports the AV1 codec, but other videos will not. The codec of the video can be determined by right clicking the video and selecting "stats for nerds." As AV1 is likely to become the dominant streaming codec in the future, I am hopeful this performance is resolved.

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