Now that the attachment has been approved...
Analog Betacam can't have
digital corruption like that. (Obviously?) Some screenshots of actual Betacam SP dropouts are shown on
this webpage about remastering a BBC series (3/4 down the page, heading "DROPOUTS BY THE THOUSAND"). Analog dropouts show up as missing vertical lines or parts of lines. Without dropout compensation they would be black (I think), but usually the playback deck replaces the missing information by repeating a line from the same field, and that's what the link shows.
Your screenshot is 576x432. Is this actually from a DVD, or an encode? It looks like typical download corruption. Even if it really is the VOB file straight from a disc, it may be a bad rip.
This page about the effort to recover a corrupted SpaceX video goes into some detail about why these errors take the shape they do. To recreate the artifact, I think it would be easier to deliberately zero-out or garble portions of a compressed video stream rather than trying to simulate it in Avisynth.