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Delivery: file or canvas

Every template declares a delivery on the menu, and it is the most useful thing to read before you spend anything. It tells you what the run is guaranteed to hand back: It is a floor, not an exclusive. remove-background returns both and is still file, because the file is what it promises.
Why a canvas template does not just render you an mp4 as well. Its price is bounded by the EFFECT — text-behind mattes at most four moments of four seconds — while a render is bounded by the RECORDING. Auto-exporting a 20-minute take to show four words would cost far more than the effect did. So you ask for the file when you actually want one, after you have looked at the result.
Check delivery before you promise a user a video file. A canvas template delivering exactly what it should still has no finalUrl, and that is not a failure.

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What the canvas is

For a canvas template this is the deliverable; for a file template it arrives alongside the mp4. Either way it is the same edit, open in the AskEditor editor as real layers:
  • clips with their trims (often windows onto your original material, so adjusting a cut point is a drag, at master quality),
  • text, music and effect elements, live and selectable,
  • the animations the template applied, as editable properties.

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Why it changes the integration

A flat file makes every revision a re-run. A canvas makes the common revisions (nudge this cut, swap that word, try the other music) a 30-second human edit. For agent products this is the escape hatch that keeps users happy when “almost right” happens, which in video is often.

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Semantic layers, not render dumps

Templates deliver canvases decomposed the way a human editor would want them, not as a literal translation of the render. A background built from hundreds of per-frame swaps arrives as one background element with its source plates in the media library; a subtractive cut arrives as one clip per kept span with the removed material still behind the trim handles. Each template’s page notes its delivery shape.

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Provenance

Canvases carry a stamp of how they were made: the template and version, the parameters per layer, so the edit can be re-derived or re-run against changed inputs later.