Render cosmic mythology voiceover
Skill gooseworks-ai/goose-skills/skills/ads/capabilities/render-cosmic-mythology-voiceover
Library of Growth & GTM skills + data APIs for Claude Code, Codex, Cursor to run ads, social, content, lead gen, seo and data scraping
npx -y skills add gooseworks-ai/goose-skills --skill render-cosmic-mythology-voiceoverAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
What its author says it does
Copied from the file, not written here
Assemble a cosmic-mythology-voiceover reel from a config — a warm spoken voiceover carries the whole narrative while N curated cosmic stills are weighted beat-synced across the delivered VO duration (cut_dur = VO_dur times weight over the weight sum, so emotional beats hold longer), Ken-Burns-zoomed per still (scale 2x, center crop, zoompan, fade-in first and fade-out last), ffmpeg-concatenated, the VO composited under the picture (libx264 crf18 plus aac), the ONE on-screen hook line faded on over the open with a drawtext alpha window, and Whisper/VEED captions burned along the bottom — never in-world text on a still. This is the FREE deterministic assembly stage (weighted sequence plus Ken-Burns plus concat plus VO composite plus hook overlay plus caption burn); the VO and the stills come from create-vo-elevenlabs and create-image-fal. Use for the cosmic-mythology-voiceover format.
SKILL.md
5.3 KB, as published. Nobody here has run it
render-cosmic-mythology-voiceover
Assemble a cosmic-mythology-voiceover reel from a config: a faceless, cinematic storytelling video where a warm, contemplative spoken voiceover carries the whole narrative (a "myth as teacher" reframe) over a slow, weighted Ken-Burns zoom across curated cosmic / mythology stills in ONE ethereal deep-indigo + gold look, with ONE on-screen hook line and burned captions. This capability is the FREE, deterministic assembly — the weighted beat-sync sequencing, the Ken-Burns render, the concat, the VO composite, the hook overlay, and the caption burn.
scripts/config.example.json is the worked example (WishAstro "Saturn isn't your villain", ~31s
1080×1920 9:16, 12 weighted Ken-Burns cuts); scripts/PIPELINE.md maps every config block to its
source step and scripts/README.md documents the free assembly.
Run
There is a single runnable script — scripts/render.py (config-driven, ffmpeg + Pillow only, NO
API keys and NO drawtext/libass required):
python3 scripts/render.py --config config.json --vo working/vo2/vo_atempo.mp3 \
--stills-dir working/stills --out working/final.mp4 \
[--words working/vo2/words.json] [--endcard working/endcard.png]
This is the FREE, deterministic assembly stage — it spends nothing. The paid inputs are
separate capabilities — the spoken VO (create-vo-elevenlabs, ElevenLabs eleven_v3 from a
tone-tagged script, atempo time-stretched so the delivered duration sets the timeline) and the 4–6
hero stills in one look pack (create-image-fal, Flux Pro 1.1, reused as repeats to reach the
~10–12 cuts). Given the VO + the stills + the per-cut weight array + the hook line, render.py
distributes the cuts across the VO duration by the weighted formula, Ken-Burns-renders each still,
concats, composites the VO, fades the hook line on over the open, burns the captions, and (if
--endcard is passed) appends a brand end card → the master + a poster. Re-cuts reuse the existing
VO / stills and cost $0. See scripts/README.md §0 for the full arg contract.
Contract (the free assembly)
- The spoken VO carries the narrative — no talking head, no sung song. The generated/supplied VO IS the audio bed (no music bed by default); do not add a presenter or a second bed.
- Plan the timeline AROUND the delivered VO duration. The VO is atempo time-stretched (clamp the factor ≤ ~1.25 so the voice never chipmunks); its delivered length sets the timeline — never trim the VO to a pre-planned grid.
- Weighted beat-sync, not a fixed grid. For each cut,
cut_dur = VO_dur × weight / Σweights— heavier weights hold longer on the emotional beats (the open, the reframe, the close); the setup cuts run shorter. Every cut stays proportional to the whole VO. - Ken-Burns per still. Render each still with scale 2×, center crop, and a
zoompanto the configuredzoom_end(~1.10); applyzoom_outon the flagged cuts;fade_inon the FIRST cut andfade_outon the LAST. Stills are reusable — the sequence repeats a few across the cuts. - ONE cosmic look, no in-world text. Every still reads in the single deep-indigo + gold + volumetric-light look; the reel's only text is the hook + the captions, added in post (the "no text, no words" descriptor keeps words off the stills).
- ONE hook line, alpha-faded on over the open. Burn the single reframe line over the OPEN only
(fade in ~0.5s, hold, fade out ~0.6s) — never a persistent caption, never in-world.
render.pydoes this with a PIL PNG + ffmpegfade=…:alpha=1(nodrawtextdependency, since stock ffmpeg often lacks it); an ffmpegdrawtextalpha window is an equivalent alternative where available. - Captions from Whisper — bottom, white. VEED/Whisper subtitle burn tracks the spoken VO in the
bottom third, white
#FFFFFF. If the host ffmpeg lacks libass (nosubtitles/assfilter), render the cues as timed PIL PNG overlays (ffmpegoverlay=…:enable='between(t,st,en)') at the same bottom placement — a free local Whisper + ffmpeg burn is the fallback to the VEED tier. - FFmpeg composite, deterministic, FREE. ffmpeg-concat the Ken-Burns clips, composite the VO
under the picture (libx264
crf 18+ aac 192k), burn the hook alpha-fade + the caption track → a 1080×1920 h264+aac master (~31s). No paid calls, no keys (the local caption fallback is free).