I can't find anywhere how to save my frames as .png sequence with alpha channel. Frames are semitransparent grey. I need it because then I want to convert them into .webp animation with another tool. I tried 'Frames Convert' and set png, but the checkbox for transparency in 'Export' dialog is unchecked and disabled. I understand, that standard video cannot handle transparency, maybe that's why this option is disabled.

The only workaround I found is to save them as non-transparent pngs, then pull them all as layers to GIMP image, then apply 'Color to Alpha' with white to all of the layers and finally use 'Export layers' plugin I have. But this seems dirty and not always applicable to any type of image. I lose frames' grey color and get black instead.

How can I achieve this easier and in more correct way?

  • 1
    There's an Export Layers plugin which can output all layers as PNG with alpha transparency. – Billy Kerr Jun 15 '20 at 20:56
  • 1
    Gimp 2.10 supports WebP natively (and WebP animations as well...) – xenoid Jun 16 '20 at 9:39

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