Important Information

Provide following Information:

• mpv version master at d6803c4
• macOS Version 13.6.3
• Source of the mpv binary or bundle: local build using mpv-build
• If known which version of mpv introduced the problem: unknown
• Possible screenshot or video of visual glitches: N/A

Reproduction steps

• Start playing the video below with --ao=avfoundation
• Click the OSC ⏯ button to pause playback
• Press the → key to move the playback position forward
• Click the OSC ⏯ button to resume playback
• Repeat until clicking the OSC ⏯ button fails to resume playback

This shows options used when reproducing the problem:

low-batt@gag mpv-build (master %=)$ mpv/build/mpv --no-config  --log-file=mpv.log --ao=avfoundation --keep-open ~/Movies/Advanced\ stream\ H.264\:HEVC\:UHD\:Dolby\ Vision\:Dolby\ Digital\:Dolby\ Atmos.mp4 
 (+) Video --vid=1 (*) (hevc 3840x2160 23.976fps)
 (+) Audio --aid=1 (*) (eac3 6ch 48000Hz)
AO: [avfoundation] 48000Hz 5.1(side) 6ch float
VO: [libmpv] 3840x2160 yuv420p10
AV: 00:00:19 / 00:01:38 (20%) A-V:  0.000 Dropped: 5                    
Exiting... (Quit)
low-batt@gag mpv-build (master %=)$ 

Expected behavior

Playback can be paused and resumed using the OSC ⏯ button.

Actual behavior

Playback becomes stuck and will not resume using the OSC ⏯ button. Once playback is stuck you can click the OSC ⏯ button over and over again and playback will not resume. Changing the playback position with the button showing ⏸ clears the problem and playback resumes.

This was reported against IINA in issue iina/iina#4921.

Log file

At the end of the log file you can see me clicking pause/resume over and over again without the video playing. Then I change the playback position and the video starts playing:
mpv.log

Process sample while playback is stuck:
Sample of mpv.txt

Sample files

I reproduced this using the Apple example file Advanced stream
H.264/HEVC/UHD/Dolby Vision/Dolby Digital/Dolby Atmos.