broll-overlaylisted

# B-roll overlay Lays silent cutaway clips **over** a finished base video: the base audio runs untouched underneath, the picture cuts away and returns, and the final duration equals the base duration exactly. That is the whole contract — overlay, never concatenation. A previous run concatenated: 24s for a 15s base, voice dead 12s. Assembly mechanics live entirely in `scripts/broll_overlay.py`; this file is judgment only — when to enter, where the windows go, what the user sees first. ## Entry condition Two things must already exist. This skill never generates the base — if there isn't one yet, say so and stop. 1. **A finished, approved base video with exactly one audio stream.** Approved means the user has watched it and signed off — b-roll is a polish pass over a locked cut. The script stream-copies one voice track under the picture, so a two-stream base is rejected: `ffmpeg -i base -map 0:v -map 0:a:0 -c copy`. 2. **Its transcript, with timings.** One call to **`POST /v1/transcripts`** with the base's `jobId` (or its `assetId` if it was uploaded). It returns `text`, word-level `words[]` and `segments[]` — **timings in SECONDS**, which is what the EDL below takes — plus an `srt` you can ignore here. Priced at 0.1 credits per minute of source, rounded up from a one-minute minimum, and **a repeat of the same source is free**, so asking twice costs once. No local install. *(The **captions** endpoint still cannot supply this — it burns subtitles