Aspect ratio is 8 : 3

Help/How To
2

I tried this out and here is what worked for me:

  1. Create a custom video mode (I called mine “Cinema 2k”). Set the resolution and aspect ratio as you had specified. Save the custom mode and then make sure it is the selected mode.

  2. Import clips. I don’t have any clips with that aspect ratio, so I used the crop filter to make the clip fill the screen.

  3. On the export tab, make sure you enter in the resolution and aspect ratio as you had specified.

When I followed these steps, I was able to successfully export a video with the specified aspect ratio and resolution.