Aliasing appears on video where MOGRTs are present upon Export

[Dodgee_doo]

I am attempting to export a UHD sequence to 1080 and 720 and my MOGRTs have laughably bad sampling. It is creating a fuzzy and aliased export. I've isolated it to the MOGRTs because the Text and various other on screen elements added inside Premiere Pro in other sections of the video sample fine and look great upon export.

Is there a setting I am not seeing to correct this? Or do I need to have MOGRTs created (and thus new sequences created) for each export size?

EDIT: I added examples with clear file names of the scenatrios that created them. I am just so confused why the exporter cannot scale or resample MOGRTs.

[R Neil Haugen]

What's the framesize of the sequence, the original media also?

What export settings are you using? And do you have Max Render Quality checked?

[Dodgee_doo]

Framesize of the squence is the 3840x2160. Original media is the MOGRT with a scale of 200.0. The MOGRT looks as expected in Program window and exported at UHD.

Export settings are baked in High Quality 1080p HD and High Quality 720p HD (they don't have Max Render Quality checked by default but checking and exporting again has same result).

I exported a 720p PNG and it displayed the same 

Here is a screenshot from the Preview window on the export tab

[Dodgee_doo]

I think I've identified the issue and this might help someone else out. My sequence is 3840x2160. The MOGRT is 1920x1080 (and scaled to 200% in the sequence in Premiere Pro). My desired export for a client review is 1080x720. 

Premiere Pro displays the MOGRT as expected in sequence in the application and when exported at 3840x2160. The rendering get aliased and fuzzy when the export is scaled down below the current sequence setting. 

I can fix the flawed rendering of the MOGRT text at export by creating a sequence at my desired export resolution. Obviously not a good solution but it works. Something in the background freaks out with the MOGRTs only. Video scales down as expect from UHD to 720p on the export. 

[Ann Bens]

Set your sequence to 1080x720 and fit everything in there.

[Dodgee_doo]

I mean I can do that, but it's an issue as Premiere Pro cannot properly handle the downscaling of text from a MOGRT upon export. What is happening in the background where it can scale vector text up, but not down, unless the sequence matches?

[Ann Bens]

You can test this cannot you with a small proejct?

[Dodgee_doo]

I added video examples in my original post.

[R Neil Haugen]

So you used a mogrt built for 19201080 on a UHD sequence, then exported to 1080 ... sounds like the app exported directly from that sequence. Which would have been an upscaled graphics item then downscaled in the export process. I wouldn't have expected that to work, I'd have tested first. Two potential scalings on graphics ... worrisome to begin with.

And this is also an example of why the major editors I've read or been around have always pushed having the sequence be at the expected export framesize/rate. And checking the image at 100% of course also, before exporting.

Doing those two things saves a load of heartburn.

[Dodgee_doo]

“So you used a mogrt built for 19201080 on a UHD sequence, then exported to 1080 ... sounds like the app exported directly from that sequence.” My apologies! In anticipation of this type of answer, I went back to AE and created a UHD MOGRT with some vector text and an Adobe logo .png.  I edited the original post and added those video results. There’s still a vector text and graphics downscaling issue at export with MOGRTs.

“Which would have been an upscaled graphics item then downscaled in the export process. I wouldn't have expected that to work, I'd have tested first.”  I mean I did test it, which is why I am here asking why Premiere Pro cannot properly downscale vector text from a MOGRT at export. Premiere Pro *can* properly downscale to 720p from UHD at export the exact same vector text and .png (I know, I know, a png is rastered) added directly to the sequence.

 
“And this is also an example of why the major editors I've read or been around have always pushed having the sequence be at the expected export framesize/rate. And checking the image at 100% of course also, before exporting.” And this is an example of where other major NLEs have met my expectations as an editor. I’ve been able to export from one master sequence at various resolutions for delivery with an *expected* loss of fidelity on text and graphics on their flavors of motion graphics templates, not degradation of the final image.

Creating new sequences and/or matching MOGRTs for each export resolution seems like an extremely cumbersome workflow to me.

[R Neil Haugen]

Thanks for the greater details here. Now, I could actually test this myself.

Graphics  ... sheesh. Depending on every possible detail, may or may not make an acceptable end result if that is different than the actual framesize of the graphic as created.

I've heard so many issues over that, and not just in Premiere.

You would expect they would be handled as you would expect video to be handled. But that is often not the case. And yes, unhappy people is the expected response.

Graphics can be the bugaboo even if all your sound things are working as wanted.