Create Blu-Ray: Encodes and burns only small section of movie

Question

I have a late 2013 Mac Pro and I am trying to use compressor 4 to burn a Blu-Ray disc. My source is an Apple ProRes422 encoded Quicktime file (about 1h of video). After about 1 h of submitting the job, compressor displays the status as successful. When I test the disc, the beginning of the movie has indeed burned successfully but the disc contains only a short stretch of the movie. I check the encoded files and they are small (ca 300-500MB) which is telling me that only the beginning of the movie was encoded. How can I burn the whole movie onto a Blu-Ray successfully? What I am doing wrong?
Furthermore, I have several movies that I would like to burn onto one Blu-Ray. How can I do that with compressor other than putting them all into one project in final cut pro and exporting the project to compressor?
By the way all 8 movies burned successfully onto one Blu-Ray with Toast 11 using the same hardware. However, I would like to be able to achieve the same or better result with compressor 4.
Thank you for your suggestions

Answer 1

You are probably not doing anything wrong. The FCP X and Compressor discussion boards have multiple threads from users who are either getting no output from Blu Ray encoding projects - or they get strange results, like very low bit rates, regardless of the settings. Long projects seem more likely to be affected. If you haven't tried it already, see whether you can make a disk image, which Toast should handel without re-encoding.
Not everyone has experienced these difficulties, but AFAIK, no one – on either forum – has come up with an explanation of why.
One of the workarounds has been one that you're already using – Toast. Others have subscribed to Adobe CC Premiere to her the Encore download. One suggestion – apparently originating from an Apple support person – was to use a high bit rate MPEG2 setting.
There have been several posts (from users) that Apple engineers are aware of the issue. I can't confirm that one way or the other.
If you want to put multiple movies on a disk using Compressor or FCP X(assuming the larger issue is somehow overcome) you would need to bring the finished movies into an editing program (including quicktime Pro) as clips, assemble them on a timeline (or track), insert a gap clip and chapter markers and titles for navigation. That's because the process only allows for one track.
The only other suggestion I can make is that if you have a system back up, then you can probably restore the previous versions of FCP X and/or Compressor. and use them for Blu Ray.
Good luck.
Russ