quality reduction in PNG images despite exporting in high res (working off MacBook Pro)

[house embers 2]

my PNG images look normal on the premier timeline, but when i export it (in Apple pro res 422HQ 1920 by 1080) it has these wierd ridges on the side

exported product:

exported product

original premier timeline: 

premier timeline

[R Neil Haugen]

Is there an alpha layer on those png's?

[house embers 2]

whats an alpha layer?

[R Neil Haugen]

Search about it online. It's an extra layer, quite frequently used in graphics png's, for masking/image control. And can be either pre-multiplied or not ... which is a bit harder to grasp at first. But if there's an alpha, not being properly handled in Premiere, you can get edge effects among other things.

[Warren Heaton]

That is unexpected.

What is the frame size of the PNG and the frame size of the Sequence?

Also, which version of Premiere Pro and which version of macOS?

[house embers 2]

the frame size of the PNG is significantly higher at 7000 × 10000. the sequence size is 1920 by 1080 apple pro res 422HQ. its just strange how fuzzy it looks for a 1920 by 1080 resolution. shlouldnt it look much clearer at that high resoulution? the version of premier pro im using is 23.4.0 (build 56). my macbook pro is macOS monterey version 12.3.1

[Warren Heaton]

Check that "Use Maximum Render Quality" is enabled under the Video options of Premiere Pro or Media Encoder.

[house embers 2]

When i hit 'file' 'export' it pulls up the export screen but it doesnt pull up the 'export settings' box like it does in this video: 

[R Neil Haugen]

That video is either of a previous version ... at least 22.x if not earlier ... or in MediaEncoder.

You get to the controls on the new Export page by twirling down the sections below the name/preset area.

[house embers 2]

Hmm, tried selecting maximum render quality but no luck. I'm looking into this alpha layer stuff 

[Warren Heaton]

Make a duplicate of the PNG in the Finder.  Open it in Photoshop and adjust the Image Size (Image > Image Size) such that the image size is 1920-by-2743 instead of 7000-by-10000.  If some extra spatial resolution (a.k.a. frame size) is needed for a push-in, use 2560-by-3657 or 3840-by-5486.

Import the resized copy into Premiere Pro and replace the high-resolution PNG with the lower, video resolution PNG.

[house embers 2]

i converted it to 1920-2743 but no luck, i also tried converting the PNG image to a JPEG but still no luck. i wonder why my other images in the timeline dont have this issue? 

[Warren Heaton · Accepted solution]

This is very unusual.

The next thing I would try is using the PNG file in an After Effects project.  Match what you are doing in Premiere Pro.  Render using the "Best Settings" Render Settings template and the "High Quality" Output Module template.  Assuming that renders at the expected image quality, import that into your Premiere Pro project.

[house embers 2]

worked! thanks Warren