Both standard mp4 files and streaming HLS files are experiencing substantial playback and rendering issues on iOS 15.
This includes:
Safari immediately crashes
Video displays only black (occasional audio can be heard)
Video is frozen on 1st frame despite time updating
Substantial load times (10+ seconds). Should be immediate.
GPU Process:Media has been disabled yet issues persist.
Safari immediately crashes with GPU Process: WebGL enabled.
These videos are being rendered via WebGL (threejs)
None of these issues were present on iOS 14.
I’m on an iPad Pro 12.9 2020.