MPEG Streamclip - http://www.squared5.com
Just trim and save as...
Very straightforward and reliable, have been using it for years for mp4 without any problem.
They're asking for money now? And food?!? Who do they think they are?!?
In Portugal there's no union, so no union rate, but for TV it's 200/250€ a day.
For a film you're payed by the project, if it's a short and it didn't get public funding, you're most likely doing it for free - with some exceptions.