I think it was posted here a while ago. But if you watch whole episode of this Jonopalooza, you can see in the credits that it is from 1997. https://www.youtube.com/watch?v=ZfT2TOf5GrI
I vaguely remember seeing this back in the day. Someone on TNS had a YouTube account that had a bunch of old/obscure videos of Sum 41. I think that's where I might've watched this. Still good to see it again after all these years! Deryck turned out to be a better frontman/songwriter for the band, though I think it'd be interesting for them to put out a raw, noisy punk song like the one they played here.