Reproduced the issue with Firefox 133.0a1 (2024-10-02) on Windows 10x64 using the youtube videos from comment 0 and the links from bug 1922291 and bug 1922809. The videos are blank or have rubber banding. The issue is verified fixed with Firefox 133.0a1 (2024-10-10), 132.0b5, and 131.0.3 (20241010155515) from comment 19 on Windows 10x64, macOS 12, and Ubuntu 24.04. The videos from comment 0 and bug 1922291 play as expected. However, the video from bug 1922809 (https://threejs.org/examples/?q=video#webgl_materials_video) plays only on Windows 10x64 and does not play on Ubuntu 24.04 and macOS 12. I have filled bug 1924070 for that but it seems that on Linux and macOS the issue is reproducible with 130.a01 (2024-07-8). I will reverify this on the 131.0.3 official build once released.
Bug 1922278 Comment 25 Edit History
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Reproduced the issue with Firefox 133.0a1 (2024-10-02) on Windows 10x64 using the youtube videos from comment 0 and the links from bug 1922291 and bug 1922809. The videos are blank or have rubber banding. The issue is verified fixed with Firefox 133.0a1 (2024-10-10), 132.0b5, and 131.0.3 (20241010155515) from comment 19 on Windows 10x64, macOS 12, and Ubuntu 24.04. The videos from comment 0 and bug 1922291 play as expected. However, the video from bug 1922809 (https://threejs.org/examples/?q=video#webgl_materials_video) plays only on Windows 10x64 and does not play on Ubuntu 24.04 and macOS 12. I have filled bug 1924070 for that but it seems that the issue is reproducible with 130.a01 (2024-07-8) as well. I will reverify this on the 131.0.3 official build once released.