Set the trailer's finish.

The whole finish: what it leaves out is the default (intensity standard, no adjustments).

The finish is a film look laid on the picture when the master is assembled: a look (camera, period-35mm, night-interior, none), an intensity (light, standard, strong; standard by default) and, optionally, single effects set to a level (adjust: { effect: off | subtle | medium | strong }; effects: steady-light, match-shots, halation, mist, shoulder, colour, vignette, weave, grain, soften). New decks and trailers start on camera. Titles and captions are laid after it, so type stays crisp, and the sound and timing are never touched. Setting it is free; on a rendered deck or trailer the master is assembled again with it (free), and setting the same finish again changes nothing.

Every effect at its level in this finish (off when the finish does not lay it), with what it does.

Every look there is, with what it does.

Every intensity there is, with what it does.

On a rendered trailer with no screenplay, a blank beat holds its video: nothing rebuilds it until each blank beat is a capture beat or a title card, or removed (then it is rebuilt, free); the answer's masterHold names the beats and the fix, and the export is refused with it (trailer_capture_only).