This is it all:
I built up my project, it consists of several other projects inserted in this project. It’s sort of like the pre-composing in After Affects. I use it mostly just to have clean composites and then just join them.
It’s only 30 seconds long. Consists of several videos, streaks with write-ons, camera, a steam generator, some jpegs and one music track.
When i then come to export it i got problems. I start to export, it starts and then just stops at one point in time. When it stops I get that Motion’s like media player and i can watch the bit which was exported.
When I had changed the format to something else rather than H.264 it rendered through out the night and spent from 3 to 9 in the morning on the same frame. I had to stop it cause obviously there was a problem. I still could watch the up to where it had rendered.
I noticed when i was using the H.264 that when i do not change any of the export settings it stops at the same frame.