Playing back non-standard footage on external monitor

(I was provided a solution https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=160157 to this that supposedly works in Resolve 17, but as it is not working in Resolve 18, I'm posting it here as a potential bug)

I have a timeline built at 5760×4320 [4:3 aspect ratio], and when I play it back through a DeckLink Mini Monitor 4K on an Atomos NEON 24 4K reference monitor, it's cropped to 16:9 or 17:9 depending if I set the Timeline's Monitor settings to UHD or DCI. But I can't find a way to make it scale down and show the whole thing in a pillar-boxed scene.

Here's the timeline settings…

Timeline Settings > Format, Monitor and Output

CleanShot 2022-05-16 at 15.26.48@2x.png (369.31 KiB) Viewed 383 times

And the system settings…

Project Settings > Video Monitoring

CleanShot 2022-05-16 at 15.21.10@2x.png (118.89 KiB) Viewed 383 times

Preferences > Video and Audio I/O

CleanShot 2022-05-16 at 15.22.35@2x.png (53.58 KiB) Viewed 383 times

Short of forcing this 4:3 image onto a 16:9 timeline, is there a way to view the whole thing on an external monitor?

Thanks
-Joseph

I haven't tried Beta 18 yet, but since you're not using Project Settings for the individual timeline, in the "Timeline Settings" for the given Timeline you need to make sure "Use Timeline Settings for Output Scaling" isn't ticked on the Output tab and change the resolution to match what's set under Monitor.

I haven't tried Beta 18 yet, but since you're not using Project Settings for the individual timeline, in the "Timeline Settings" for the given Timeline you need to make sure "Use Timeline Settings for Output Scaling" isn't ticked on the Output tab and change the resolution to match what's set under Monitor.

Thanks — I've combined your response with the original message and a response there. I think there are two different approaches to the same thing and I want to bring these messages back together. Sorry for the confusion — please head there to see my reply, thanks. viewtopic.php?f=21&t=160157&p=850552#p850552