Blotchy footage after rendering

[GRENCH]

Have some footage I shot that came out fine, but once I imported it into final cut and rendered it it became blotchy. Weird is all that I can call it. What could be causing this. I've done three projects with the 7D and this is the 1st time this has happened. Once I render it it looks like hell.

Looking for an answer.

 

[GRENCH]

This thread is dead. Figured out what the problem was. Really just an elementary mistake.

Thanks for all of the wonderful & helpful suggestion.

SARCASM

 

[Cranky]

Thanks for clear and concise information about your problem that made all these helpful suggestions possible.

 

[GRENCH]

No problem. I put a lot of thought into it before posting. Don't mean to toot my own horn but killing such a popular thread was very hard.

 

[j]

...?