It may be referring to video ram? Do you have other programs open that may be using ram or GPU vram resources?

@UnconditionalUser Were you initially able to open VP20 prior to this occurring or have you never been able to get it to open?

never been able to even get it open

It may be referring to video ram? Do you have other programs open that may be using ram or GPU vram resources?

nope closed out everything and still no dice, running a rtx4080 as well so vram shouldnt even be a problem

Thanks for trying. I really don't know what the problem could be. Here's advice on filing an official support request: https://www.vegascreativesoftware.info/us/forum/ask-support-updated--120281/#ca860645

It would be useful to report what Task Manager has to say about RAM in use vs free, and also same for GPU RAM.

@UnconditionalUser, at some point in the past, I too had the same "Low on Memory" error. At first, I thought that it had to do with the Windows memory management but, after a day's struggle, it turned out that the then GPU driver was causing the problem. I am not sure if you're having the same problem as mine but you might want to try changing the GPU driver to see if it solves the problem.

I have the same problem with low memory in Vegas Pro 21. I have 128GB RAM and I have no other applications open so I have much free RAM available. I have the latest drivers of Nvidia Studio. There is no newer GPU Studio driver available, because I checked it.

I tried turning off GPU processing in Preferences>Video tab, but unfortunately I didn`t solve the issue. I noticed that the problem occurs when the cursor rendering position is rendering about 20 minutes position of video. My video duration is 58 minutes, so when I get the low memory error I started rendering from about 20 minutes position and then I had another low memory error when the cursor rendering project position was also on 20 minutes position (in summary it was 40 minutes position of the whole project). Then I render last 18 minutes duration left and the 3rd part of this video finished rendering successfuly, because it was below 20 minutes. So finally I had three files: 1st one: 20 minutes long, 2nd one: 20 minutes long and third one: 18 minutes long. I am able to combine these two files into one part using ffmpeg, so there will be ok.

But I don`t know how to render whole 58 minutes long video without low memory error.

I have been using Vegas from Vegas Pro 8 (as I rememember) and I have never had that issue before.

I had the same issue despite ample video and system ram. Rendering using MagixAVC with Mainconcept worked. Are you doing a GPU encode?

Did you have the issue in Vegas Pro 21, becuase I hadn`t had this issue in Vegas Pro 20 and earlier version either. I don`t know but maybe it is linked with Adjustment Event, but I am not sure.
I render using GPU, because I use Voukoder 12.1. I will try to install Voukoder 13 today. I have in Voukoder settings GPU enabled.

I personally have never experienced this issue. My computer specs in my signature. I usually render with AMD VCE.

I suppose that this it the problem with Vegas Pro 21, not with GPU drivers. I installed Voukoder 13 and tried to render in two different methods: using GPU and using CPU. Both types of render throw low memory error. I noticed that exception was thrown when the position of rendering was on about 20min:50sec. This behaviour was not present in earlier version of Vegas Pro.

What else did I notice? When I have installed Voukoder 13 I noticed that rendering speed was significantly improved. Voukoder 12 was rendering the the same region of video in i.e. 2-3 hours and Voukoder 13 was rendering me 30 minutes. I don`t know if it is because of presets reset or changed after install or maybe rendering speed was improved in new version of Voukoder (13).

Do you have the same feeling that in Voukoder 13 rendering speed was improved?