[Mixmasteriii]

Thanx for the advice above. I now have a new issue with the same 12 minute film. When the film is done exporting, instead of having a 12 minute film it only exported 4 minutes. The exporting codec that was uesed, 720p 59.94 blackmagic10bit 4:4:4 RGB and the target hard drive is an internal 250gig,plenty of room. any ideas?