I am (and have been for a while) experiencing and issue with Channels app on AppleTV, where the sound of a DVR playback video will have a sound issue, which sounds to me like center panned phase cancellation. This is a once and a while issue, and is not able to be consistently repeated, however I notice it after playback has been paused another app is used for a while. When I come back to the Channels app, I can hear audio but only certain parts of it. For example, when I'm playing back a football game broadcast and the issue happens, I can only hear crowd noise and some music beds. Any voice over sound is completely absent. This issue persists through out playback and also affects all commercials in the broadcast.
I'm an audio engineer and the best way I can explain the issue, is that is seems like several channels of audio are summed, and audio information that is equal amplitude and equal phase gets cancelled out, whereas the audio that is out of phase and same amplitude remains. I'm not sure how many streams of audio are getting recorded, but if it's just L&R, then it makes sense that things like the audio from announcers in a sports broadcast would be fully cancelled, yet sources of stereo information (like crowd noise) would still be present.
I am able to rectify the issue with a force quit of the Channels app, and then resume playback.
Anyone else have this issue before?
Also, I'm running Channels DVR Server version 2021.08.12.0054 if that matters.