ReTones Content Engine turns a before/after screen recording and a product image into a finished 9:16 short — hook, before, a directional-blur punch zoom, after, product reveal, CTA. No CapCut. No manual editing. Fully automated, entirely local.
Every frame below is pulled directly from a real render — the same pipeline that generated the demo above. Each scene is its own independently-rendered, independently-tunable module.
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0:17–0:20The punch-zoom aims at a configurable focal point (default: top-right, where a plugin window usually sits) — and the before/after framing is biased toward that same region, so the cut into the zoom never feels like a re-frame.
Converting 16:9 screen recordings to 9:16 by filling the frame crops away roughly two-thirds of the width no matter what — crop_focal_x/y decides which slice survives, and it's the single setting that matters most once real footage is dropped in.
No OpenCV, no GPU compute, no external motion-tracking. Every effect is either a native FFmpeg filter or a Pillow-rendered PNG overlay.
Each of the 6 scenes renders to its own intermediate clip with identical codec/fps/resolution, then a fast -c copy concat stitches them. Debuggable in isolation; a 7th scene is a one-line addition.
Zoom/pan uses an ease-in-out cubic curve, compiled to a zoompan expression string — FFmpeg evaluates it per-frame internally, no Python callback exists at that layer.
The punch-zoom renders at 240fps, blends neighboring frames with tmix, then downsamples to 60fps. Blur direction falls straight out of actual pixel motion — no vector math.
Hooks, labels, and CTAs render via Pillow to transparent PNGs — auto-wrap, auto-shrink-to-fit, true letter-spacing — then FFmpeg simply overlays the result.
The transition's whoosh is band-passed noise with an envelope, generated on the fly — dropping a real whoosh.wav into config overrides it.
Durations, zoom range, focal point, colors, fonts, CRF — nothing is hardcoded in scene code. Batch-render an entire Projects/ folder with one command.