MBP M1 2021: Strange Issue with Media Playback: No Sound/Stuck Video/
crwdns2934249:0crwdne2934249:0:
Hi, I am getting no sound from speakers. Tried restarting and shutting down. Different apps are behaving differently.
* Firefox/YouTube: Video plays without audio.
* Safari/YouTube: Sometimes no audio/video (but seeker moves, subtitles come). Sometimes video just stuck on loading—in which case after a while it tells me to “try restarting the device” if playback doesn’t resume.
* Apple TV: Media cannot load/play. Instantly media player is “killed” for the lack of a better term.
* Apple Music: Track auto skips to next. Similar to Apple TV. It attempts to play, can’t play, then instead of killing the media it skips to next song, repeat.
* Many streaming services in Firefox, Chrome, Safari: The playback technically begins, I can see the seeker/playhead move in time and subtitles come and go, but video is black and there’s no sound.
What’s common in all scenarios is there’s no sound. It happened abruptly one day. Default device is set to “MacBook Pro Speakers”.
More strangely, in the past week I've been having this problem, there have been two times when it became completely fine. That too, mid-playback. And randomly, it goes away too. For example, most recently when it started working again, I was watching a video on YouTube. I pause it for a bit to do something and when I come back and resume it, suddenly there's no sound again.
Further clarifications:
* I opened OBS Studio and added window capture of Firefox while playing a YouTube video. The sound bar was not moving at all.
* I have removed all Bluetooth devices and kept Bluetooth off while I have tested all this.
* It's not just media, no alert sounds are coming either, including the boot-up sound.
* Sound works fine when using a headphone (via aux for example).
* No crackling or weird noise to tell me that speakers are damaged in any way. When they started working again twice randomy during the last week, they worked 100% fine with complete clarity and volume.
[link|https://www.reddit.com/r/macbookrepair/comments/1lx3u4c/strange_issue_with_media_playback_no_soundstuck/|Video here|new_window=true].
``MacBook Pro 16-inch 2021 with Apple M1 Pro, 16 GB RAM, and Sequoia 15.5 operating system.``