Problem with Aspect Ratio

In Resolve 14 I could render with the 2.35 aspect ratio by rendering with 1920x817 pixels.

In Resolve 15 I get an error "Recording failed with Error : Failed to encode the video frame."

How i can get my aspect ratio now, eithout rendering an 16:9 file?
Any solution?

THX
Greetings
Mark

[Peter Chamberlain]

can you try with 816 not 817

I tried now and 816 is working fine...
thank you a lot!

But why is 817 wrong?

Often times video dimensions need to be evenly divisible by 8 to function properly.