One possibility is a corrupt media file on the hard drive.
Hi Jim, the original file was 108 gig, and 4.5 hrs of footage, that i'd recorded direct to disc...it failed with that.
Then I Split that and just used the sequence of 15minutes i needed and that still fails.
Wouldn't think the files are corrupt as they open elsewhere on my system and playback fine.
It seems strange, I know, but I've had corrupt files in the past that would play fine, but would fail the export every single time. A new file solved the issue.
Well, I think i finally have got to the root of it...These files were recorded using Blackmagics Mjpeg Compressor, and that seems to be the problem.
Rather than recoding the files (difficult as AME would fall over as well!) I ran them through my digital desk again (Vmix) playing them back and re recording them using AVi and the normal dv option...this time the files produced would render and output...hoorah now see if i can finish it..will report back, but this seems to have sorted me out.