Intel Core i7-7920HQ CPU @ 3.10GHz ... View more

After spending most of the day testing, I finally was able to render alpha channels correctly! Note: In my case this was only an issue while rendering to h.264 and h.265 .mp4 files. I rendered out to MPEG and Quicktime and other formats just fine. It was only with h.264 and h.265. Rendering using OpenCL, Metal, or "software only" didn't change the result. I tested other variable settings and the culprit appears to be the "Render at Maximum Depth" setting. If it is UNCHECKED it renders out correctly with the Alpha Channels working as they should. Hope this helps everyone! ... View more

I'm having the same issue.  Carlosz13485882 suggestions don't seem to work for me.  I select the sequence in the project window and when I go to interpret footage it is greyed out and cannot be selected. I've selected the individual clips which did allow the Interpret Footage but it didn't change the end result. I still have a black box where it should be alpha channel transparent. Even if it did work, I can't and shouldn't have to go back in my projects to select hundreds of clips to manually fix this. I've tried software and hardware encoding (hoping it was a video driver issue) but nothing changed. I'm really surprised Adobe released CC 2019 with these issues. I've also had problems with Illustrator and InDesign. Very frustrating. Think it's time to uninstall and go back to the previous version. ... View more