Too high bitrate (not as it looks)

Question

Hello,
I have one huge problem with the latest DVD Studio Pro and I need your help.
I have a 15 minute and 3 minute video and I need to build a simple DVD. Here's a scheme:
http://mt11.quickshareit.com/share/picture5cff99.png
15 minute is "Final Composition" and 3 minute is "Additional Scenes". It would be SD DVD. I'm using export of raw miniDV camera footage from Final Cut Pro, using Apple ProRes 422 DV 48 KHz and file format MOV.
About two days earlier it was all right – I've linked all files and build the DVD, but yesterday I've needed to change one scene. Then I tried to build it again, but it still says error caused by too high bit rate. Why? Before two days was the same bit rate (QT says it's about 40 Mbps), the same footage, the same export, the same length... and everything was good.
I've tried also other bitrate (from 7 to 20), other codecs (DV, DVC PRO, ...), but without any success. Restarted program, restarted Mac, gave it a break, but still nothing.
Can you please help me solve this out? I will be glad and thankful (it's a year school project work = very important). Thank you very much!

Answer 1

Encode all your video via Compressor to m2v and make the audio AC3 and bring those assets into DVD SP (when you changed the scene perhaps the rate went too high.) Also FWIW 7 - 20 can be high (well over 8 is going to give you issues and 20 is HD realm not SD)