With the lower example, that would just be a 24-bit image, no alpha - the black and white areas represent transparent and opaque parts of the clip. In the top example, if you Export from the timeline and choose a 32-bit codec (with alpha) for the export, then the alpha channel is included - the black area will be transparent.

Key out the background of the clip, then change setting from 'Composite' to 'Alpha' and then Export. Changing to Alpha mode shows the black and white alpha in Program, however exporting still exports the original image! In my mind, the Export should export what I am seeing in the Program monitor window, and not something else.Īnyway, if you are using the Ultra Keyer in Premiere CC, then you CAN Export the alpha, see attached pic. With CC, that is no longer the case from what I can tell. With older versions of Premiere such as CS6, one could change the Program Monitor settings from Composite to Alpha, then Export the alpha (black/white) video. Can you maybe explain a bit more about the workflow, what you wish to accomplish? When you say 'just alpha', can I assume you mean a black and white image representing transparent and opaque areas? Which can be used as a 'mask' later in a keying operation of some sort?

Encode videos for serato video