Smash usually runs at a solid 60FPS. If you're recording off-screen, try to sync it to something that'll play nicely along those lines. Those black lines are extremely annoying.
There's nothing really to say about your game, though. It was obvious most of your deaths were you jus' screwing around (dair waaay off the edge without even attempting to get back, etc). You could have punished the falco more. If he doesn't jump out of his shine, his sitting vulnerable - grab-uthrow, smash, etc. If a falco comes from above you, either get out the way or shield it (and screwattack or wavedash-attack if he won't follow the dair up quickly enough).
Aftermath's right, there's no reason to post this. You weren't under pressure - the only thing worth noting is that you could have punished the falco harder and probably avoided all your deaths (ledgehop into his fsmash? wtf?) if you gave it a real effort.
It's hard to give any advice when the person isn't giving his all - odds are whatever you'd wanna mention is something he already knows just didn't implement.