On iOS 8 beta 4 and also in the OSX 10.10 Safari the video to texture uploads are way too slow!
An iPad 3 renders only with unusable 2-3 FPS!
The WebGL rendering itself is very fast, 60 FPS on all devices, only the video frame texture uploading is too slow.
Here a simplified test example with a FPS counter:
I am on IOS9 with Ipad 3. Confirming this is a problem.
I thought it was something I was doing. The video will play back at full frames but within webgl its a problem.
This ticket is really old. Any ideas what is going on ?
I've added an example which includes the CORS proxy work around and a stats monitor.
It says 5 FPS !
I could try and reduce the video size and see if that helps ?
This animation example from the stats example gives me 14 FPS compared to 60 FPS.