System and IINA version:

• macOS 13.4.1
• IINA 1.3.2

Expected behavior:
Playback of YouTube videos does not freeze.

Actual behavior:
@AlejandroVolkova has reported that IINA 1.3.2 will freeze while playing some YouTube videos.

This was encountered running on an Intel based Mac:
iMac Retina 4K, 21.5-Inch, 2019
Processor : 3 GHz 6-Core Intel Core i5
Graphics : Radeon Pro 560X 4 GB
Memory : 32 GB 2667 MHz DDR4

Steps to reproduce:
Play a YouTube video with VP9 encoding on an Intel based Mac with hardware decoding enabled.

• MPV does not have this problem.

Has not be tested, but the expectation is that the problem will reproduce with mpv if hardware decoding is enabled.

This has now been reproduced with mpv. The playback core thread is blocked on a call to VTDecompressionSessionWaitForAsynchronousFrames as is seen with IINA.

How often does this happen?
Every time.