How do I make a video that goes from one image to another?

With the Transitions app, under Apps on the dashboard. Upload the start and the end image —two renders, two photos or two views of the same project—, pick a transition (seamless walkthrough, exterior → interior, day → night, construction → finished, zoom to detail, orbit, aerial, seasons, or a free one you describe in one sentence) and press «Generate transition», with nothing else to write. You get one clip, without sound, that travels from the first image to the second in the first one's aspect ratio: if the end image has another, it is cropped at the center. A 5 s clip costs 75 tokens at 720p and 100 at 1080p; a 10 s one, 150 and 200. It comes with the Standard plan and up, like all video. If the clip doesn't come out, your tokens are refunded; when you cancel, only if it hadn't started yet. You can download it as an MP4 or as an animated GIF —made in your browser, at no cost— and publish it to Community, with the start image as the «before» and the end image as the cover. «Use in Nodes» opens the clip in a Video node, with its two images, to extend it, add music or join it with another.