capabilities

Render Split Screen Creator

Assemble a split-screen creator ad from a config — a two-zone vertical composite where a supplied AI-creator lip-sync take fills the BOTTOM ~48% while real 16:9 product/demo clips run uncropped in the TOP ~52%, each top clip contain-fit with a darkened blurred cover-scale fill of the same clip (never black bars), a 3px brand-color divider between the zones, the creator slice cover-fit per the per-scene VO timing, scenes hard-concatenated with the body audio being the concatenated creator VO slices, an end card held on the last sharp frame ~3s, then the ASSEMBLED cut transcribed with local Whisper (not the raw VO — concat drops inter-scene silence) and word-level captions burned in the chosen style. This is the FREE deterministic assembly + caption stage (two-zone composite + blurred fill + divider + hard-concat + end card + captions); the VO comes from create-vo-elevenlabs, the anchor from create-image-gpt-image-fal, and the whole-VO lip-sync from a paid VEED Fabric 1.0 take (a no-atom upstream input). Use for the split-screen-creator format.

by Athina AI

Run in Gooseworks View skill in Github

Install

Terminal

npx gooseworks install --all

# then, in Claude Code, Cursor, or Codex:
/gooseworks use the render-split-screen-creator skill

About This Skill

render-split-screen-creator

Assemble a split-screen creator ad from a config: a two-zone vertical (1080×1920, 9:16, ~40s) format where an AI creator talking-head anchors the BOTTOM ~48% of the frame and real 16:9 product/demo clips run uncropped in the TOP ~52%, a 3px brand-color divider between the zones. The creator delivers the whole VO cold-to-camera and each top clip proves the claim its VO line makes. This capability is the FREE, deterministic assembly + captions — the two-zone composite (contain-fit + blurred-cover fill + divider + creator slice), the hard-concat, the end card, and the word-level caption burn from the assembled cut.

scripts/config.example.json is the worked example (Perplexity concept-10 "Bloomberg terminal", ~40s 1080×1920 9:16, 6 scenes + an end card); scripts/PIPELINE.md maps every config block to its source step and scripts/README.md documents the free assembly.

Run

This is the FREE, deterministic assembly + captions stage — it spends nothing. The paid inputs are separate steps — the VO (create-vo-elevenlabs, ElevenLabs eleven_v3 with-timestamps, sliced into per-scene windows), the photoreal MEDIUM chest-up AI-creator anchor (create-image-gpt-image-fal, gpt-image-2) — shot at a natural webcam distance (headroom + shoulders, real room), not a plain-background close-up headshot (see the anchor note below), and the whole-VO lip-sync (a paid VEED Fabric 1.0 @ 720p take — a no-atom step, image_url = the anchor, audio_url = the vo mp3, ~$0.15/sec, ~$5.90 for a 39s VO; run its calls sequentially, veed/fabric-1.0 storage-auths 403 under parallel load). Given the creator lip-sync take + the per-scene VO timing + one 16:9 top clip per scene + the scene-1 hook graphic + the end-card clip, render-split-screen-creator composites the two zones, hard-concats the scenes, appends the end card, transcribes the assembled cut, and burns the captions → the master. Re-cuts reuse the existing VO / lip-sync / clips and cost $0.

Contract (the free assembly)

Two-zone split, top ~52% / creator ~48%. The TOP zone runs the real 16:9 product/demo clip contain-fit (uncropped), the BOTTOM zone is the creator lip-sync framed head-to-shoulders: scale-to-width × a small ZOOM (~1.15–1.2) then crop the zone with a downward offset so the face sits upper-middle and the shoulders enter the bottom. (A plain cover + crop-toward-top shows only the head and cuts the shoulders — and it can't rescue an anchor that was shot too close; fix the anchor distance first.) Tune zoom/offset visually against the source video's creator framing — it's a FREE re-assemble, no VEED re-run. A 3px brand-color divider separates the zones. Canvas 1080×1920, top_height ~998. Keep every stacked height EVEN (998 + 4 divider + 918 = 1920) — libx264 rejects odd dimensions.
Anchor = photoreal MEDIUM shot, not a studio headshot. The lip-sync only looks as good as the anchor. It must be photoreal/candid (real lived-in room, natural skin cues), framed chest-up at a natural webcam distance (headroom + shoulders), not a plain-background close-up and not a phone-selfie pose copied from another format (e.g. ugc-walk-and-talk). VEED Fabric handles photoreal fine (unlike Seedance).
Blurred-cover fill, never black bars. The top clip's letterbox margins are filled with a darkened blurred cover-scale of the same clip — a flat charcoal/black bar reads cheap.
One claim per scene, shown as it's said. Each top clip is windowed (top_start/top_end) to the on-message segment that proves its VO line. Never loop a short clip — set the window and the assembler speed-fits it to the scene (looping replays into a sparse/black tail).
The creator VO is the entire audio bed — no separate music. Body audio = the concatenated creator VO slices, timed per the per-scene timing.json; the lip-sync drives the mouth.
Hard-concat the scenes; end card on the last SHARP frame. Hard-cut concat (no dissolves); append the end card holding the last sharp frame ~3s. If the end-card clip fades to black, hold the last sharp second (endcard.clip_end), not the black tail.
Caption the ASSEMBLED cut, not the raw VO. Concat drops inter-scene silence, so the ad timeline ≠ the VO timeline; only the final cut's audio yields correct caption timing. Transcribe the assembled cut with local Whisper, build word-level cues (sentence-aware chunking), burn the ASS in the chosen style (serif-accent, kinetic-pop, …). Keep the -precaption cut + the .ass sidecar so captions restyle without re-rendering the composite. If the host ffmpeg lacks libass, render the cues as timed PIL PNG overlays (ffmpeg overlay=…:enable='between(t,st,en)') at the same placement.
FFmpeg composite, deterministic, FREE. Two-zone composite per scene, hard-concat, append the end card, mux the creator VO, loudnorm I=-14 → a 1080×1920 h264+aac master. No paid calls, no keys — the VEED Fabric lip-sync is a supplied input, produced upstream.

What's included

Two-zone split, top ~52% / creator ~48%.* The TOP zone runs the real 16:9

Anchor = photoreal MEDIUM shot, not a studio headshot.* The lip-sync only looks as

Blurred-cover fill, never black bars.* The top clip's letterbox margins are

One claim per scene, shown as it's said.* Each top clip is windowed

The creator VO is the entire audio bed — no separate music.* Body audio =

Render VO Anchored Motion Listicle

Assemble an expert/educator motion-graphic LISTICLE video ad from a config — a spoken authoritative voiceover carries a numbered listicle while N web-animated hyperframe beats (HTML plus the Web Animations API, one branded design system of alternating tiles, big hero numerals, and glass-pill callouts) are rendered frame-by-frame via Playwright and anchored to the VO's word-level timestamps, periodic color-graded B-roll windows give visual breath, and captions burn ONLY inside those B-roll windows (2-word chunks, ASS Format header carrying a Name field so none drop) with the VO mixed under a low music bed. This is the FREE deterministic assembly stage (Playwright beat render plus ffmpeg concat plus window-masked caption burn plus VO-and-music mix plus final composite) — the VO, the music bed, and the stock B-roll come from create-vo-elevenlabs, create-music-elevenlabs, and media-proxy. Use for the vo-anchored-motion-listicle format.

Render Stopmotion Hand Swatch Cycle

Assemble a stop-motion hand-swatch-cycle product-demo ad from a config — a sequence of still PLATES (one hand swiping a single-barrel cosmetic across a cream skin-patch, the barrel + swatch changing per plate while the hand, background, crop, and lighting stay locked) is PNG→mp4 loop-encoded at each plate's own stop-motion hold (fast motion frames 150–250ms, per-shade ~380ms, hero beats 1100–1800ms), concat-demuxed with HARD cuts into a silent master, closed on a Playwright HTML-rendered branded end card (serif tagline + sans subtitle + real logo SVG over a hero BG, never AI-rendered text), and muxed with a pre-sourced music track playing under the end card with a fade tail (no VO). This is the FREE deterministic assembly stage (loop-encode + concat-demux + end-card render + music mux); the master-anchor plate, shade plates, and end-card BG come from create-image-gpt-image-fal and the track from create-music-elevenlabs. Use for the stopmotion-hand-swatch-cycle format.

Render Narrated UGC Wardrobe Stitch

Assemble a narrated-UGC "stitch reply" ad from a config — a single spoken VO carries a verbatim testimonial while ~30 per-cut i2v clips (one creator across ~5 wardrobes in ~3 worlds, plus product B-roll) are each trimmed to their EDL window built from the VO's Whisper word boundaries and hard-concatenated via filter_complex concat (never the demuxer, which drops audio on a duration mismatch), the VO mixed over an optional sidechain-ducked instrumental bed (−20dB, 20 to 1) so the VO stays on top, karaoke-pop captions burned on every word throughout (VEED Whisper preset, re-spelled against the locked script), a landing-page scroll rendered as FFmpeg zoompan over a Playwright PNG (not i2v), and closed on the brand's real end-card PNG — never AI-rendered text. This is the FREE deterministic assembly stage (trim-to-EDL + filter_complex concat + VO and music mix + karaoke captions + landing-page zoompan + end-card append); the VO, creator, start-frames, and clips come from create-vo-elevenlabs / create-image-gpt-image-fal / create-image-fal / create-video-fal. Use for the narrated-ugc-wardrobe-stitch format.