Estimate Segment Video

Quote one video generation without queueing it.

Video is the only job whose price varies with its subject — the clip has to cover the segment's narration, and a 15s segment costs three times a 5s one. A flat per-model figure would leave the Generate button enabled on a job the server then refuses, so the drawer gates on this instead. credits is exactly what queue_ai_job checks for the same (subject, model, settings).

Pure read: no ai_jobs row, no provider call, no credits touched.