Big Sur 11.3 update seems to have broken AppleTV playing videos from my iMac

[DJNew]

I have always played my library of iTunes media (e.g., videos) that are hosted on my iMac, from my Apple TV connected to my home theatre.

After updating my iMac to Big Sur 11.3, my Apple TV, which is running the most recent version of tvOS (14.5), sees my iMac, and sees all of the media, but when I click to play anything, all I get is either a black screen or a spinning wheel.

Both are on the same home network, same sharing user ID, etc. I tried reauthorizing both the appleTV and my iMac, but no change.

The fact that I can see my iMac and the Media, all the way to the song or video level, is interesting.

Has anyone else had this problem?

Thoughts?

D

 

[dmrowley]

Open the TV app on your Mac and reauthorize. This happens to me after each big update.

 

[DJNew]

Thank you @dmrowley!

I tried that and it didn't fix my particular issue.

I should add some more context here...

My AppleTV can successfully play all purchased songs, music videos, movies and TV shows, by going into the respective apps on AppleTV. Hence, I seem to be fully authorized for all purchased media.

However, what is not working is the ability to play videos that I either downloaded or made and added to my iMac iTunes. These are not purchased from Apple. I have never had any problem playing them before. I would just select COMPUTERS on the main AppleTV screen and select what I wanted to play.

Now, I can see these videos from AppleTV under COMPUTERS, but when I select play, nothing happens. I get a black screen. When I press MENU it goes back up a level per normal.

With Apple breaking iTunes out into Music, TV and Movies, I feel like something may have gotten lost in the transition. For example, I had some home movies I could play from within the old iTunes. I don't see any of those files in the 3 new apps that replaced iTunes.

Am I missing something?

D