Inside a Keystroke — 2026-10-28
An English explanatory film adapted in Codex from Exploded Teardown.

REFERENCE AND CODE
21 Keys, Opened / Exploded Teardown by Lemomo / LemoLab, lemo-opuscar.
https://github.com/lemomo-ai/lemo-opuscar
Source snapshot: 3961ddb3d24d8876e0e2754f7790d66908acee51.
Upstream software MIT; upstream media CC BY 4.0. See UPSTREAM-LICENSE.txt
and ../reference/ORIGINAL_CREDITS.txt. No original MP4 frames or audio are
used in the new film. Geometry, PBR materials, post-processing, wave
separation and much of the scene implementation are reused and credited.
Changes: new 387-word narration, 190-second timeline, additional camera
positions, English labels/title/captions, original score arrangement and
material Foley retimed to the new animation.

HARDWARE
Corne v4.1 by foostan. https://github.com/foostan/crkbd
Pinned commit: 63366fb7f51cf2a796462fdd90527e99dd126055.
CC BY 4.0 / MIT. PCB geometry, traces, footprints and case STEP derived
from these files. Only the left half is shown. See FACTS.md for geometry
and modeling assumptions. Corne and foostan/crkbd are named on screen.

LIGHT
Poly Haven — photo_studio_loft_hall_2k.hdr, CC0.
https://polyhaven.com/a/photo_studio_loft_hall

FONTS
Inter — Inter Project Authors, SIL OFL 1.1.
JetBrains Mono — JetBrains, SIL OFL 1.1. License texts in fonts/.

MUSIC AND FOLEY
New deterministic arrangement and synthesized Foley in mix.py.
Marimba and glockenspiel: Versilian Community Sample Library, CC0.
Sources and license retained in assets/instruments/.
No reference-film audio is reused.

VOICE
Kokoro-82M / hexgrad, am_michael, Apache 2.0; kokoro-onnx, MIT.
Generated locally at speed 0.95. No voice cloning or paid service.
Independent transcript: MLX Whisper small, OpenAI Whisper weights.
ASR/text agreement is not a subjective listening review.

SOFTWARE
three.js 0.170.0 (MIT), NumPy, SciPy, SoundFile, soxr, Pillow, PyAV,
FFmpeg/libx264 and Pillow captions, Kokoro ONNX, ONNX Runtime. Dependencies retain
separate licenses. npm license texts are inside node_modules/.