This rendered like crap in my browser, but I'd probably take a 2.5-5 minute break once a day to look at leaves. That'd probably be about all I could stand. What's the difference between 30 seconds and 30 minutes staring at leaves? They're leaves. They all look the same and they all act the same. They're mostly the same color. They don't do anything interesting.
There's a disturbing undercurrent in industrial societies of fetishizing the "natural", and I think that's the only reason anyone would enjoy sitting in the cold looking at a goddamn tree for a half hour -- to make a tribal statement about how ~enlightened~ they are because they can ~appreciate~ the ~beauty~ of ~nature~.
I mean, you're probably a developer, aren't you? Your time is valuable. Why waste it looking at a tree? Just keep this open in a small tile on your desktop and glance at it once every few hours if you really like leaf videos.