Here's a sample of the file:
http://www.mediafire.com/?he47atae9c68cdc
I know there are editors that have easy colour fixing options but if it's that easy then surely there must be an Avisynth script I could use to do the same thing? I put my Avisynth script through HC Encoder. I tried other programs such as TMPGEnc but I found through testing that they don't give as good quality as HC Encoder.