I think the OP manages to deactivate it, but as long as the DX is present on the system, the NDI option does not show up.

It's weird though, DNxHD80 used to be available in this project type, even if it was a subsampled thin raster type.

[quote user="bartekJ"]maybe they will add this function to Nitris DX[/quote] Again, Nitris DX is End-Of-Life, so I would estimate the chances of its drivers being worked on any longer are close to zero. I don't have any inside information, just an educated guess.

With the Nitris DX being EOL, I doubt the drivers have been updated to recognize the Open NDI option. The DX has a specific driver, unlike all other modern Open I/O's.

QT X does not (yet) support DNxHD/HR. It was supposed to happen, but not sure when. The 2.7.6 codec should let Mojave and earlier open those UME MOV's, AFAIK. Also: why the in-between step, rather than sending out DNxHD-SQ (which is the relabeled 115)? If needed, you could also try and use Shutter Encoder to create a new QT.

I wouldn't say 2019.12.0 is buggy, nor is it a '.0' version (that would have been 2010.0.x). You can definitely run 2020.4 on Mojave, see: [ur]https://avid.secure.force.com/pkb/articles/en_US/Compatibility/en267087?retURL=%2Fpkb%2Farticles%2Fen_US%2Freadme%2Fen416435&popup=true[/url] But rather than 2019.12.0, I would opt for 2019.12

You should definitely see 'Preferences' at the bottom of the Edit menu. While it is not recommended to upgrade versions during a project, many people do. Also, if your current version is not working as expected, that could be a reason to upgrade.

Can I ask why you are on 2019.12.0 in stead of the more recent revision of 2019.x? Also: are you unable to access these settings via Edit->Preferences?

[quote user="Mark Fletcher"]if there is a workaround[/quote]Temporarily switch your project format to, say, 1280x720, and export from there. Or do a (fast) export to DNxHD or ProRes, then use an encoder like Shutter Encoder to create a smaller h264.

Hi Mark, I would think that Avid is well aware that people would like to be able to output to a different canvas size. On non-Catalina systems, that is still possible as long as you're willing to go through Quicktime. As that is a dead end, I'm fairly confident that at some point we will get to choose different canvas sizes using UME. In the