I'm seeing green everywhere!

I download Youtube videos using the Firefox addon Download Helper and convert the files using FLV to AVI file converter.

My videos have all been fine but when I downloaded and used the CCC(?) thingy Ulf recommended, I noticed it produced a green barrier on my hoem videos and gave a distorted green effect to the downloaded videos.

I took the CCC(?) pack off and the home videos are fine and working well. The only problem is the downloaded videos are still showing some green tints to them.

Anyone have an any ideas to what to do to get rid of them?

Perhaps someone could point me in the right direction as to how to use the CCC(?) pack I used. (Ulf? Any ideas?)