Wowwww.
I would love to do something like that but I definitely cannot be bothered to sit through the replay and film like that. Especially when you can't rewind or skip to a specific time! I tried something similar ages ago, but I either :
1) keep missing the part because I was fastforwarding too fast
2) I get the part, but I didn't move my camera correctly
3) I get the part, but realise the camera angle wasn't great and want to try a different one
imagine doing that for a highlight moment that happens 40 minutes into the game
T____T