Length, frame, and the render

Duration and the single take

The duration ruler starts at 4 seconds, runs up to the current maximum, and defaults to 30. Up to the model's native take length, the clip comes back as one unbroken piece of footage rather than two shorter clips joined at a cut. Ask for longer than a native take and the engine films segments and stitches them into one cut. This is why the ceiling on the ruler can drop when you switch models: a model that renders in a single call cannot chain, so its native length is its hard limit.

Frame and resolution

Aspect ratio offers vertical 9:16, wide 16:9, square 1:1, and portrait 4:5. Pick the one your placement needs. Vertical is the default, because most paid and organic feed is vertical. Resolution offers 1080p and 720p and defaults to 1080p. Full HD costs roughly 2.5 times the render of 720p, and 720p is the cheapest option and holds up fine for most feed and story placements. Drop to 720p when you want a faster, cheaper render and do not need full HD. Do not reach for it just to save time, though, because duration drives the wait far more than resolution does.

How long it takes, and the model

A render runs about thirty seconds of compute for every second of finished video. Think of it like developing film: the longer the reel, the longer the wait, and there is no rushing it. In practice a 5 second clip lands in a couple of minutes, 15 seconds in around eight, and a full 30 second take in roughly a quarter of an hour. The wait ceiling scales with the duration you asked for, so a long render is never cut off early, and the card names the phase it is working through.

The model row sits on Auto, which picks a sensible default and labels the row with the model it would actually use. You can pin a specific model from the dropdown, where each one shows a per-second estimate when its rate is known. Auto is the right call until you have a concrete reason to override it.