.Mov can't be imported.

So I have some recordings from other softwares that are .mov, because i want the alpha channel instead of chroma keying in the engine , because it isnt very good. however When I import it in my media player it is there but it gives me this in the output log:
LogWmfMedia: Error: An error occurred in the media session: No suitable transformation to encode or decode the content.

It is translated, but it seems that it doesnt support the codec? Is there anything i can do? I tried a lot of things that I read in the forum, but havent found a solution.