Question on viewing 1080p video files on 4k TV

[bvdd]

I have several hundred 1080p movies and TV shows as MP4 and MKV files.
I view them via an Epson 2100 1080p projector and a 72" wall screen. The picture is perfect for us.

We're talking about buying a big screen TV for a new house that's coming soon.

I don't want to lose the picture quality I have now, and I'm concerned about a 4-8k TV somehow degrading the 1080p file.

Is that a concern?

Thanks

[jagabo]

I'm concerned about a 4-8k TV somehow degrading the 1080p file.

Is that a concern?

No.

[usually_quiet]

720p, 1080i, 1080p, and 20160p video all look fine on my 4K TV. 480i doesn't look good, but that is to be expected.

An 8K TV is probably overkill, as true 8K video is rare.

[jagabo]

Other things to consider: What is going to be playing the video files? The TV's internal media player? An external media player? A Blu-ray player? With external devices what signal is being sent from the player to the TV? Which device is doing the upscaling? The player? The TV? Both?

But in general you don't need to worry about quality unless you do something really stupid -- like use composite output from an old DVD player.