I wonder if the movie(it's cost to produce) would be considered a campaign contribution?

Well, according to that article it's not just the timing of the release but the nature of the funding source that makes it a problem. If something is funded by a union or corporation then it seems to tread on the rules. The same film made by a private individual would not transgress, no matter how close to the election. Then it's a matter of what rules and regs the carrying network or channel is expected to follow on airing it.