Exporting issues - PNG Masks still showing up on final export.

Report · Feb 18, 2020

I am having issues with my PNG mask still showing on final export. I did alot of research and reading, and it looks like this may be due to Premiere 2020 removing the render with Alpha Channel button?

I am using a greenscreen mask to remove dust/speckles. I created a trasnparent PNG layer and use the Color Key effect with dust/scratch removal on the layer below. Nested and placed on top of the primary layer. It all looked and worked perfect in editing.

The tutorial I followed for dust/speck removal using a greenscreen PNG file was from 2017, so it may not be an applicable process in a newer version of premiere, perhaps? It looks like there were workarounds using after effects, but I am very new to AE and Alpha Channels. I was hoping it was an easy fix within Premiere or the export settings.

I've tried several different export settings, ProRes, GoPro, 8bit, 10bit, etc.. I re-exported the PNG mask as an 8-bit file. I've tried everything I can find on the internet without diving into AE.

Any suggestions?

Report · Feb 18, 2020

try changing your preview format to match your export settings, render your sequence, and if all looks ok, then export with "use previews" checked.

Report · Feb 18, 2020

I just tried that with a few different settings. Didn't work. Thanks for the suggestion, though!

Report · Feb 18, 2020

maybe try a photoshop format file .psd rather than a png or another format that supports an alpha channel? should be a way to batch convert your files and then relink... Really don't understand your workflow so just a guess...