In Properties/Video, uncheck 'Adjust source media to better match project or render settings'. I don't know if it will solve the problem but its worth a try.

LOL: I tried to help someone with this problem a few weeks ago & eventually even added a video showing how to set the media properties...but he'd given up by then and never watched it (as far as I can tell).

Here's that thread:

https://www.vegascreativesoftware.info/us/forum/no-response-vega-pro-with-reverse-video--128768/#ca801074

In a nutshell:

Set the project settings to the portrait width and height,

Then, click on the source video on the time line, hit your right mouse button, and select properties (at the bottom of the pop-up menu). Next go to the media tab and set the rotation setting to tell Vegas which way it should be displayed.



Finally, edit one of the render templates so it matches the project settings:
 

Thank you, that's very helpful and clear.

Thank you all. I did what you suggested and it worked - however, I gave up trying to render the file. It was just going to take all day and consume about 25% of my CPU capacity.

Yikes! I queue long renders like that to run over night.

Are you using a GPU accelerated render option? Is the file huge? This sounds like the subject for another thread...

What are your project and render settings?

Thanks 3d87c4.

I am using the GPU accelerated rendering option. I have an older PC, but it is still very robust. I have a NVIDIA GeoForce GT610 graphics card that has 1 GB of onboard RAM. My CPU is an Intel Core I7 @3.4 GHZ. I have 16 GB of installed RAM. I have a 2 TB HD that's about half-full. I am running Windows 10, build19042.

As for my video - it was a band performing a 3 minute song on stage. It is a 342MB mp4 file, 1920X1080, 30fps with 48,000 HZ audio. My rendering option was MAGIX AVC/AAC MP4, internet HD quality, 1080p 25fps.

Does all this seem kosher?

On the face of it, yes. I was curious to see screen shots of the actual settings on the off chance there was a typo or something odd...but this is likely out of my depth, sorry.

No, I don't think GPU rendering will work on such an old card. In general Vegas only supports CPUs and GPUs up to about 5 years old. 4GB ram is the minimum. Also, what generation i7 is it?

Minimum requirements for VP 18 here: https://www.vegascreativesoftware.com/us/vegas-pro/specifications/

I would do a MagixAVC render to Mainconcept.

Thanks RogerS and 3d87c4 for all of your technical advice. After reviewing the minimum VP18 hardware requirements, it seems that my computer is more outdated than I thought.