Mac loses ability to play video

Dear Lazyweb,

About once a week, macOS 10.15.7 loses the ability to play video. Press play and it goes super-fast-forward all the way to the end. Scrubbing while paused works, but any attempt to play fails in any app using AVPlayer -- not just QuickTime Player, but also jwztv and even "Notes". VLC works, but obviously that doesn't help me.

Sound familiar? Any idea how to un-fuck it without rebooting?

I don't see anything obvious in the system logs, but they are so comically verbose that it's impossible for me to tell.

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6 Responses:

  1. Chris says:

    I had that when using eqMac, a system-wide equalizer app. I could see a couple of first seconds of a video, then it stopped, or played super-fast, as you describe. Do you use it, or similar software?

    • jwz says:

      Never heard of that, but my house of cards requires a wobbly base of Audio Hijack, Loopback and OBS in order to accomplish anything at all.

  2. Derek says:

    I've seen it but just dismissed it.... However, Google say "coreaudiod".

    So 'pkill -x coreaudiod' ?

    • Zach says:

      Yep. I used to get the exact same "video fast forwards to the end immediately" bug, and killing coreaudiod (it restarts itself) has fixed it without a reboot every time. Hasn't happened to me in a while though so I'm not sure if some update made it better.

  3. John says:

    Spam this about 20 times until it says no matching process found and wait a few more seconds, then it will be fixed. It is a known bug in Catalina. sudo killall coreaudiod

  4. Chris says:

    Usually switching to a different audio output device, then back to the original will fix this for me.