I'd like to create an animation (mp4 video) with a completely white background and use a hdri environment texture for lighting.
If it was just an image I'd have no problems, simply by setting Film to Transparent under Render options and then the PNG to RGBA, I could easily add a white background to the image subsequently using some photo editor.
But what about animations? If I do the same thing, so I set Film to Transparent, the video gets a black background.
Is it possible somehow?