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jos.plompen
User level: Level 1 (31 points)

Apple TV 4K loses audio during playback from my Mac’s TV library

Apple TV 4K loses audio during playback from my Mac’s TV library. The video continues, but sound stops after a few minutes. Movies play normally in the TV app directly on Apple TV, and the same files play normally on my Mac.

It happens with more than one movie, including a known-good title. Remuxing the M4V file and creating a test copy with AAC audio did not help. The Apple TV is set to Stereo Only. I’ve restarted both devices many times and tested with both devices connected to Ethernet; the issue persists.

Additional tests: QuickTime’s AirPlay to Apple TV initially plays smoothly with sound, then loses sound while the video continues. Control Center Screen Mirroring stutters and has no sound. AirPlaying a YouTube video does not stutter, though its audio is slightly delayed.

Please investigate a possible Mac-to-Apple-TV Home Sharing/AirPlay playback issue.


Apple MacBook Pro 2021, MacOS: Golden Gate 27.0


Apple TV 4K (2nd generation), tvOS: 27.0


Posted on Oct 13, 2026 1:28 AM

4 replies

Bruceba
User level: Level 1 (18 points)

Oct 13, 2026 3:40 PM in response to jos.plompen

I have this problem with Apple TV 4K (3rd Gen, 128GB) playback from the Mac mini Pro 4 TV library. My MKV file conversions with Wondershare and MacXConverterAI apps have all played without problem until tvOS27.0. I've changed the converted format between MP4 and M4V, but the problem remains. I can also play from my Mac's TV library to my studio display, and there is no problem. My sound drops around the 50 sec playback time. Spoke to apple TV support representative, and he said, "sorry, good luck". ***


[Edited by Moderator]

jos.plompen Author
User level: Level 1 (31 points)

Oct 13, 2026 6:23 PM in response to jos.plompen

I mean: Airplay a Youtube from my iPhone 12 Pro does not stutter, though its audio is slightly delayed.

jos.plompen Author
User level: Level 1 (31 points)

Oct 13, 2026 6:24 PM in response to Bruceba

I spoke to an Apple Support representative and he is going to escalate my problem.

Lwio
User level: Level 1 (60 points)

Oct 14, 2026 8:52 AM in response to jos.plompen

Quite a few of us are experiencing this.

Originally posted at discussions.apple.com/thread/256375299