Q: Safari doesn't play my 60fps videos uploaded on YouTube. Chrome does.
Since a couple of months I can't playback 720p 60fps videos in Safari (latest Version 9.1) on El Capitan (latest Version 10.11.4), but I believe this happened on Yosemite as well. I used to playback them with no problem some time ago.
As I open the video on YouTube, I'm seeing the first few frames of the video and then it stops because it lacks cached data – with the loading icon, buffering timelessly. If I switch down to 480p for example, it suddenly runs and buffers with no problem.
I'm uploading MOV files with ProRes codec, but MP4 files with .H264 act the same. No problems watching my videos on Chrome! Also no problems with same videos, but in 30 fps version.
Also I CAN watch other 720p 60fps videos on YouTube in Safari with no problem. What's more weird is that I cannot run 1080p 60fps smoothly anymore, but some time ago they worked well – not the same problem like with the buffering described above, but with video performance (they run about 3 fps) – maybe that has something in common?
I've got a MacBook Pro (15-inch, Mid 2010) – I know it's old, but it plays 60fps HD videos in Quicktime with no problem. Graphics card NVIDIA GeForce GT 330M 256 MB. I've got a known GPU factory flaw diagnosed at Apple retail store (but the Apple repair program doesn't cover my model) that causes sporadic spontaneous computer restarts. May that have something in common as well?
Any clue is more than welcome!
EDIT:
Don't know if it helps, but this is what I mainly get in the console:
25/05/16 20:37:24,968 WindowServer[187]: _CGXRemoveWindowFromWindowMovementGroup: window 0x2557 is not attached to window 0x2583
25/05/16 20:37:32,666 WindowServer[187]: send_datagram_available_ping: pid 358 failed to act on a ping it dequeued before timing out.
25/05/16 20:38:35,000 kernel[0]: process com.apple.WebKit[15011] thread 686757 caught burning CPU!; EXC_RESOURCE supressed due to audio playback
Posted on May 25, 2016 11:39 AM