Howdy aquariancore,
Welcome!
Do you have a price tag in mind? Is this for your desktop or laptop?
I don't do any video editing but from what I've read there's more to consider than just the motherboard. Editing video is a task that demand a lot from your CPU so Dual Processors or Dual Core CPU's is recommended. e.g...
Intel Core 2 Extreme QX6700 2.66GHz / 8MB Cache - $1000.00
AMD, Athlon™ 64 X2 Dual-Core 3800+ 2.0GHz - $600
You're also going to need a goodly amount of RAM and harddrive space depending on the size of the files/software you're working with.
There are a lot to choose from and you'll want to consider your system as a whole and not just the motherboard. So... what's your price range and what does the rest of your system look like?
Lyte