Shapes and lengths
The AI Vids shapes and clip lengths by model: the Previews, Long take, Veo and Kling, and how a whole-video length is filled with the longest clips.
Shapes: 16:9, 9:16, 1:1, 4:3 and 3:4 for the Previews, within a model's own subset elsewhere. Clip lengths: the Preview 2, 4, 6 or 8 seconds; Long take 5, 10, 15, 30, 45 or 60; Veo up to 8; Kling 10. Ask for a length of the whole video and it is filled with the model's longest clips; ask for a clip length and you get one clip.