Firefox: AdBlock Video is a simple Firefox extension that eill play your videos commercial-free.Sadly, regular old Adblock Plus can't usually block video ads. Luckily, AdBlock Video does it in a pinch. Just install the add-on and enjoy ad-free videos.
As always, we do believe you should support the sites you visit. However, you've probably noticed that many of these players play the exact same ads over and over again, which can be very annoying, so we understand the desire to block if you're a particularly heavy video watcher. Use with care, please.
AdBlock Video is a free download, works wherever Firefox does.