wjs-reframing-video

Convert a video's orientation by cropping a narrow band from the source — not by physically rotating it. The crop window follows the active speaker (the face whose mouth is moving), not just the largest or most-confident face. A .crop.json sidecar records the crop plan, the per-segment speaker decisions, and the parameters used. The original input is never modified.

When to use

• Repurposing a 16:9 podcast / interview / talk for vertical short-video platforms (WeChat Channels 视频号, Douyin 抖音, Xiaohongshu 小红书, YouTube Shorts, TikTok, Reels).
• Repurposing a 9:16 phone recording for horizontal players (YouTube long-form, blog embeds).
• Repurposing 4:3 archive footage for 3:4 mobile, or vice versa.

The output aspect is the source aspect with width and height swapped — 16:9 → 9:16, not "letterboxed 16:9 in a 9:16 frame".

When NOT to use

• Multi-person Q&A where each face needs its own crop — this skill picks one crop track per video. For per-speaker split renders, use wjs-editing-multicam instead.
• Animated content / B-roll with no faces — falls back to center crop, usually wrong for the intent.
• Heavy camera motion in the source (handheld pan/zoom) — the face tracker amplifies camera shake. Stabilize first.
• Source already at target aspect — no work to do.