Question Long Render reveals looping that I didn't want

For the past 6 years I have rendered with no issues.

Last night, I rendered a 55 minute movie and it took 5 hours!  When the DVD was made, I discovered that two clips were looping to their beginning and the movie would not play to end.

Any ideas what I did wrong?

Thanks to Derek for all his hard work and help through the years!

Hi Treff

Sorry for the delay in replying to your message.
I have been unwell for the past 2 weeks and haven't been online until today.

Render Times
Render times that are longer than normal, normally indicate you have accidentally configured a setting incorrectly and/or the source video you used, has something strange about it.
There are 2 things that come to mind immediately:
1. Frame Rate mismatch
If the Source video frame rate, Project Properties frame rate and Render frame rate are mismatched, that will definitely cause a massive workload increase.
What is the Frame Rate of the source video ?
What is your Project Properties frame rate ?
Which Frame Rate did you render with ?

2. Where did your Source video come from ?
If your source video was recorded with a Mobile Phone, it is most likely using a Variable Frame Rate, which can cause very slow render times.
I recommend all phone videos be converted into Constant Frame Rate, before you import them into Vegas Movie Studio.

Looping video
Forgetting about DVD Architect for a moment, does your rendered video loop when played in a regular Media Player, outside of Vegas and DVDA ?
If the actual video is looping, that means you made a mistake in your Vegas Movie Studio project, on the timeline.
Open your VMS project and have a close look at the timeline.
If you drag the end of a video on the timeline, past it's natural end point, the video will automatically loop back to the beginning.
It's easy to find this error, because when a video is looped in VMS, you will see a small notch on the top edge of the video.

If the video rendered with VMS is OK (not looping), then that means you have accidentally turned a setting on in DVDA, that makes the video loop.
Upload a copy of your DVDA project file to the forum (as an attachment), then I can open it up and have a look at your project's settings.

Regards
Derek

p.s.
Sorry once again for the delay in replying