[Omer Aydin]

Have you tried rendering it?

When I preview the timeline in Good or Best mode, Vegas goes ‘Not Responding’

It works OK in Preview mode.

[Omer Aydin]

With Divx 6 installed and FourCC codes changed to DIVX,
I suggest you load your camera clips into VirtualDub one by one and save them as uncompressed AVI files (John Rofrano instructed it before but, if I didn’t get it wrong, you have used Vegas instead of VirtualDub to uncompress them.)

Move your original video files to a different folder, uncompress them using VirtualDub, save them with the original file names to the folder where your original files used to be. After that, when you run Vegas and load your project, it should automatically replace the new video clips with the offline ones.

[Omer Aydin]

Try this;

https://www.digital-digest.com/software/download.php?sid=1253&ssid=0&did=2

[Omer Aydin]

I used to try an earlier version of Boris Red with Vegas 6 and I was very disappointed. Due to the nature of Vegas engine, the Boris plugin was unable to aquire realtime preview frames from Vegas to display in it’s own preview screen.
Have they fixed this or you still just see the first frame of the clip while you work on it?

[Omer Aydin]

I also have the same problem with Vegas 7.0e (Build 216).
It looks like a memory issue. I solved it by muting tracks and rendering them in groups.

The project has 20 video and 6 audio channels. The render progress always gets stuck at a constant point. I realised that the frame it gets stuck is the timecode where events with track composition mode set to 3D Alpha channel gets heavy.

I checked the memory Vegas uses while the project is loaded. It was around 200MB. (%20 of physical mem.) The 14 of 20 tracks were set to 3D Alpha mode. To test it, I tried reducing the channels by muting 1 by 1 and it started normal rendering after muting half of the 3d Alpha channels.

I suggest you try muting channels one by one and find the event that makes render process to get stuck. When you pin it down, render it as solo and load the final output in your project to reduce CPU and memory usage.