I used a REGEX which blocks all these domains, but unfortunately it also blocks the video playback:
(r)[0-9]---sn-([0-z]){8}.googlevideo.com
This basically means block domains with the following pattern:
r#---sn-XXXXXXXX.googlevideo.com
Where, # is any numer from 0 to 9, and XXXXXXXX is any string of 8 alpha-numerics.
The problem is that I don't know the how to distinguish between the video playback domains and the ad domains.
Any hints on what the pattern is so that I can fix the REGEX?