[Webkit-unassigned] [Bug 245852] New: Freezing and crashing caused by scrubbing streaming video content

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245852

            Bug ID: 245852
           Summary: Freezing and crashing caused by scrubbing streaming
                    video content
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tri.voxel at gmail.com
                CC: bugs-noreply at webkitgtk.org

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

Scrubbing a video, either by using the arrow keys to jump forward and backward, or by using the timeline, will cause the video to freeze entirely. This has been a long-standing issue that has affected WebKitGTK for as long as I can remember going as far back as 2018 when I first started testing it. It is not 100% easily reproducible, and seems to happen somewhat sporadically. I recommend signing into your YouTube account on Gnome Web and then setting aside some time to watch your favorite YouTube content. As you watch, occasionally jump back a few seconds, then maybe adjust the timeline with the cursor. This is bound to inevitably cause this issue to present itself. Again, it cannot be reproduced reliably, but will 100% happen if you are trying to interact with videos in any meaningful way. It happens every once in a while, and there is no guarantee it will happen at all the first try.

The procedure to reproduce generally goes like this, I am watching a video on YouTube, Odysee, or some other social media site such as Reddit. I may bounce back a few seconds by using the arrow keys. I may use "J" and "L" to bounce back and forward even faster. I may then press play and encounter a buffering error or a frozen webpage. I also may bounce through the timeline using these keys, followed by a timeline scroll with my mouse that completely crashes or freezes the video playback or webpage. I also may encounter it by clicking around the timeline to different sections of the video until it crashes or freezes. It is not an uncommon bug, but it is not usually so prevalent that it makes the browser unusable. However, sometimes it is and will render video streaming impossible.

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