A brute force method would be to export a still image sequence from the 23.976 project timeline. Then, import the still image sequence into a 29.97 project.

Thanks for your reply.

Jason, I tried this and it seems output is correct - but Vegas then "fills" the "missing time" from original clip by looping the beginning part.

For example, my original test footage is 1min in actual time but being recorded at 80% it shows up as roughly 1min 13s. So I select "disable resample" and set playback to 1.25. Result is a clip at 100% realtime... all good... but the length should be only 1min. Instead the rendered video is still 1min 13s... the first 1min is fine, but then vegas fills in another 13s by playing part of the beginning again.

I think this is the cause for my confusion... I hadn't noticed it was doing this before :(

I hope that made sense. How can I just end up with the 1min rendered video?

Drop the video on the 23.976 project timeline.

Zoom out so you can see the end of the 1 minute 13 second clip.

Hold down the Control key and drag the right end of the clip back to 1 minute.

Render to a 29.97 output.

Disable resample if it looks better.

Thanks John, but 'dragging' the clip to change velocity isn't really precise.

I noticed using Jason's aforementioned method though that Vegas inserts a "notch" in the timeline and I can just manually trim the clip afterwards.

Thanks for everyone's help.

I gave you the most precise answer first.

I don't quite understand your issue.

You seem to want to speed up a 1:13 clip and have it still last 1:13. It won't. Time goes by faster. My method works fine (at least you seemed to indicate that it did), except the clip on your timeline is still 1:13. Now, just cut the clip at 60 seconds: notice the notch on the top of the clip? That's the end of the clip.

Alternatively, use John's method (either one of them).

Jason, sorry if I wasn't clear. I *don't* want it to still last 1:13... I know it should be shorter, as it plays back faster. But that's the point... the rendered clip wasn't short - which resulted in some confusion. I initially didn't realize part of the (nature) clip was being looped. After trimming before rendering, the result is correct speed and shorter - which is all good - thank you.

John, and I really appreciate it. It's just somewhat of an indirect method / work-around. I've actually never tried it before and it's great info... gave it a try and it worked like a charm. Definitely something to keep in mind, thanks!