Cheapest 4K AI Video Generator on Reviral, Priced Live

Veo 3.1 clips run up to 8 seconds, so a 15-second 4K video on Veo 3.1 Lite is two clips joined in the editor, each at 12 credits (~$0.15). Seedance 2.0 4K makes one clip of 4 to 15 seconds in a single render: a 15-second 4K clip costs 1010 credits (~$12.60). One long clip keeps the motion and the light continuous across the whole shot, while two short clips give you a cut in the middle. Seedance 2 (the standard route) also renders 4K; its 4K price is shown on the Generate button before you press, because it costs more per second than its 720p default.

4K has four times the pixels of 1080p. It pays off when the clip will be cropped, zoomed, played on a large screen or cut into a vertical and a horizontal version from one render. For a phone feed, 1080p already fills the screen, and most social apps compress uploads anyway. On the Veo 3.1 routes the size does not change the price, so 4K costs nothing extra there; the file is simply larger and takes longer to upload.

Open the Cinema studio, pick a model from the table, write what happens in the shot, and choose 4K in the size menu. Add a reference photo if you want a set face, product or place. The exact credits show on the Generate button before you press, and the clip appears in your library when it is ready.