Sonoma freezes / crashes when playbacking videos in Quicktime

Sadly Apple is slow, too slow with a fix. QuickTime as many have pointed out, freezes sometimes with a simple move of the cursor. A hard reboot is required, and Apple expectedly should receive a crash report. Third Party app. VLC similarly freezes arbitrarily. THE FIX: ElMedia so far works flawlessly and has some nice features, but the modestly priced upgrade needed.

Seemingly, IPadOS 16's proclivity to not load personalized Apple Music and playlists, or to drop them if loaded and they are not there to play. Same kind of thing?

Is there no human or bot that can pick this mess up and get it fixed.

I've found that if I convert the .mp4 into a ProRes LT .mov file, it plays perfectly with Quicktime. The only luck I've had with .mp4 is by using Elmedia Player, but I still don't trust it. So for now I'm going with .mov

I have this problem as well. VLC player or Elmedia player seem to work. Try using one of these instead of Quicktime.

Issue fixed so far. Ran First Aid which gave out a bunch of warnings then found a corrupted file which it repaired.

THE FIX: ElMedia so far works flawlessly and has some nice features, but the modestly priced upgrade needed.

Has worked a month for me!

Big thanks ICANHEARUNOW for the tips!

Kerri

Some people have reported success with the recent update to 14.4. You may want to try that.

I can't say if it will work, because I never experienced this problem, on any version, but as usual, it is worth a try (after making a backup).

I know its not the best solution but I just downgraded my MBP M1 Max from the latest Sonoma to the Ventura 13.6.6! Mirroring works just fine again. Every other solution did not work out

Quicktime/computer was only freezing when I played .mp4 files. I took those files and output them as ProRes 422 LT and Quicktime seemed to play okay. I do hope it gets fixed soon, because it's a little nerve wracking with a public event coming up soon.

All, I found fix for Mac mini m1. Following credible advice articles, I entered Recovery, chose options and then uninstall and reinstall Sonoma 14.0. I had previously changed VLC settings (fail) then uninstalled it.

Dirwin70

Experiencing the same issue on Sonoma version 14.0; the entire MacBook freezes and must be hard reset to get it up and running again. It doesn't look like there is a Quicktime fix in 14.1 beta notes.

Have you tried using IINA to see if that helps as a workaround?

I confirm that this problem do not happen if you use another account on the same computer. Also not when you boot in Safe Mode. Disabling logins itens and quitting the background apps does not help either. I guess it doesn't depend on a third party software nor is a general OS problem. If it was, Apple would have fixed quickly. This must be some corrupted file in the user library, related to Quicktime or more general video function. Running First Aid has not helped. I tried to find this corrupted file, but without profound knowlege of the system it's very difficult. It would be great if some expert or people at Apple could give orientations to collect logs to analyse. I hope I have not to do a clean install (by the way I installed Sonoma on top of an older OS - my mistake).

Same here. MacBook Air 2020, UBS-C dock with HDMI, HDMI cable connected to Dell full HD 27" as second screen (mirrored). Playing MP4 freezes the whole thing, only option is to hard reset.

I've set VLC as the default for MP4's which works fine but this issue is a PITA....can't believe it's not been fixed yet.

FYI - A workaround is to use extended display mode instead of mirrored.

Having the same problem too.

Mac does not freeze when using VLC in Desktop mode rather than in Fullscreen mode.

But I updated VLC first.

I agree that this should not happen and should be fixed from the OS side.

I am just offering my insights for you to have a workaround.

Also, since disabling my startup items and quitting my background apps, the problem has not reoccurred either.

So that seems to confirm the interference with these apps.