Does anyone know what this gray screen is? (in some rips)

[Enrik]

I usually find this on blu-ray rips (from Kino Lorber):

http://i68.tinypic.com/2vujakx.png

I would like to know if that gray screen belongs to the original blu-ray (.m2ts file) or it's a message from the ripper. We can see Crawford Post Production:

Video (at the beginning):

https://www.youtube.com/watch?v=j2U5Uhk4oIM

Another example (some rips have a beep):

https://www.youtube.com/watch?v=kf0e0gxTTSk

If the original file is .m2ts why that screens shows .mov? Why the line DVD Commentary on the first case if we're talking about a blu-ray?

[smrpix]

It's an identification slate from the post-production house that mastered it. These usually aren't shown.

It shows you that whoever stole these had an excellent source.