I'm exporting an image sequence using Export > Render Video and set to "Photoshop Image Sequence", but my png's come out with a black background, my psd has no background and the intended result is transparent. How can I export with a transparent background?
In the bottom right corner of the Render Video dialog box is a section called Render Options. I'm guessing your value for Alpha Channel currently reads as None. Change this to Straight - Unmatted and I think you will get the transparency in your exports that you are looking for. You could also explore the other Premultiplied options.