A montage edits many short shots pulled from ANYWHERE in the source (not a few
fixed contiguous highlight windows), sequenced establishing -> quick detail cuts ->
slow-motion hero, over one continuous music bed -- much closer to how a car film is
actually cut.
- MontagePlan model + director/montage.json shot list (per-shot source time,
duration, punch-in zoom, speed).
- HighlightDirectorFlowService.processMontage: builds one EditPlan from the shot
list (bypassing the highlight-window validator), one continuous music cue,
distributed voiceover, and titles; reuses asset prep + worker + renderer.
- Renderer: explicit per-shot framing via a "zoom=" token (falls back to the
progressive punch-in); pin each segment to its exact target duration with -t so
frame-quantization drift cannot accumulate across many short shots.
Verified on the DJI source: 18 shots, 16.7 s, -16.5 LUFS, TP -2.8 dBTP, QA green.
The edit now reads as a real montage (varied framing + detail cuts + hero) rather
than slow pans. mvn -o verify green (248). Remaining ceiling is the source footage.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bg76sLc43Wc3j5ZcLkboYR
b3718dd0b8