The Amateur Message Boards of the World Famous VoyeurWeb

So im posting alot of pitures and learning alot about how to use this site. I am having problems uploading videos though. Every time I get through the process and it uploads it tells me that it must be one of the acceptable formats (.wav, .mp4, etc.) Even though I confirm that it is, it still will not let me submit the videos telling me that it is not an acceptable format.

Any Help?