for fun, I tried it with old video I recorded back in the end of 90s
https://www.sendspace.com/file/pu7glm but it's almost didn't fix anything
it's very bad record using old JVC from 80s with almost dead video head
and most importantly, it was done by a kid about 10 years old
and since one head is a bit better than the other one SelectEven() after the source call with SpotLess make it better