extend-videolisted

# media-forge:extend-video Video extension workflow. Extends an existing video clip using Veo 3.1 extension chains (+7s per hop, 720p, max 20 hops). ## Workflow 1. Receive source video path and continuation directive from $ARGUMENTS. 2. Validate source video exists. Check current duration to calculate hops needed. 3. Guard: if requested total duration > 148s (20 hops), warn user and cap at 20 hops. 4. For each extension hop: dispatch `media-forge:veo-director` in `extend` mode with `hopIndex`. 5. Download each hop result immediately (2-day TTL — warn if operation age >36h). 6. Return extended video path chain and `extension-manifest.json`. ## When to use Invoke when user has a video and wants to extend its duration. Each hop adds +7s at 720p. Maximum 20 hops = 148s total. ## Outputs - Extended video paths (one per hop) - `extension-manifest.json` with hop chain, durations, and total length - Cost per hop and aggregate