CP3S said:
There are plenty of legit avi videos you can download, I don't even see the point in bringing up the possibility that they may be pirated.
I've never run into anything VLC couldn't handle, unless it was corrupt to start with.
The only situation VLC couldn't handle was when I needed to open some .rmvb files (ended up using Haihaisoft Universal Player for those), but that was a long time ago so they might have added support for those files since then.