Live Countdown Split-screen — "Counting Itself Down" / 自己倒数 (library demo)
Every third-party asset in the film, with its source and licence. Per-second usage is in SOURCES.md.

This is an unofficial film made from NASA's own launch-day material. NASA did not make, review or endorse it.
No NASA insignia is used as a graphic; NASA marks appear only where they are painted on the real rocket or
printed on the real fact sheet. NASA media guidelines: https://www.nasa.gov/nasa-brand-center/images-and-media/

FOOTAGE (NASA, U.S. federal government works, public domain in the United States; excerpts only, graded,
cropped to avoid on-screen bugs and camera IDs, re-timed only where noted)
- "Artemis II Live Launch Coverage - 4K", NASA/Jori Kates and Ryan Darden, 2026-04-01
  https://images.nasa.gov/details/KSC-20260401-VP-JCR01-0001-Artemis_II_Live_Launch_Coverage_4K-M19183
  Picture (CAM 1, tracking camera) and the broadcast audio: launch commentary and loop call-outs, used throughout.
- "Artemis II Launch - Firing Room 1, LCC", NASA/Glenn Benson, 2026-04-01
  https://images.nasa.gov/details/KSC-20260401-MH-GEB01-0002-Artemis_II_Launch_Firing_Room_1_LCC_Rover-M19183
  CAM 2. Edited footage without a clock: shown as "same window", not frame-synced.
- "Artemis II Live Launch Coverage - SLS Launch Vehicle Camera, Switched Feed", NASA, 2026-04-01
  https://images.nasa.gov/details/KSC-20260401-MH-AJN01-0001-Artemis_II_Launch_ISO_SLS_Launch_Vehicle_Camera_Switched_Feed_720p
  CAM 3. Synced by its burned-in timer; the timer was blurred out (delogo) after syncing.
- "Orion Camera View of Artemis II Liftoff", NASA (JSC), 2026-04-01
  https://images.nasa.gov/details/art002m1200912222_Liftoff_1
  CAM 4. Rotated 90 degrees.
- "Artemis II Live Launch Coverage - UAS / Drone", NASA/Juan Busto, 2026-04-01
  https://images.nasa.gov/details/KSC-20260401-MH-JMB01-0001-Artemis_II_Launch_UAS_4K-M19183
  CAM 5.
- "Artemis II Launch From Banana Creek", NASA/Cory S Huston (catalogue date 2026-03-20; the clip is the 2026-04-01 launch)
  https://images.nasa.gov/details/KSC-20260401-MH-CSH01-0002-Artemis_II_Launch_Banana_Creek-M19183.mp4
  CAM 6. The clip's opening slate (with NASA insignia) is not used.
- "Artemis II Launch from OSB II Balcony - Slo Mo", NASA/Brandon Hancock, 2026-04-01
  https://images.nasa.gov/details/KSC-04012026-C4829
  CAM 7. Slowed 2.5x in the source; played back at real-time speed (setpts/2.5).

PHOTOGRAPH AND DOCUMENT (NASA, public domain)
- "Artemis II Launch Crew Walkout", NASA/John Kraus, 2026-04-01 — https://images.nasa.gov/details/NHQ20260401_admin_0004
  Cropped, graded.
- Artemis II one-pager, NASA fact sheet AIIFS-08.27.25, page 1, via Wikimedia Commons (PD-USGov-NASA)
  https://commons.wikimedia.org/wiki/File:Artemis_II_One_pager_082725_508_(1974822455374).pdf
  Shown as a document close-up (rows "10 DAY TEST FLIGHT", "2 EARTH ORBITS"); the page's logos are outside the window.

FONTS (SIL Open Font License 1.1; texts in fonts/; fetched by tools/fetch_fonts.py from Google Fonts)
- Barlow and Barlow Condensed, Jeremy Tribby
- IBM Plex Mono, IBM
- Noto Sans SC, Adobe / Google (subset to the film's characters)

VOICE
- Narrator (two lines): Kokoro-82M text-to-speech (Apache-2.0), voice bf_emma, run offline with kokoro-onnx (MIT).
  Every other voice in the film is NASA's broadcast audio.
- Speech checks and word timings: faster-whisper (MIT).

MUSIC AND SOUND
- Original score and procedural sound design written for this film (audio/mix.py).
- Samples (CC0): VS Chamber Orchestra: Community Edition (Versilian Studios), Versilian Community Sample Library (Versilian Studios)
  (timpani, gran cassa, bass drum, toms, snare, hi-hat, crash, tuba, trombone, horn, tubular bells, glockenspiel, contrabass pizzicato)

TOOLS
- Rendering: headless Chromium (Playwright); ffmpeg.

FACTS
- Every claim on screen and in the voice is sourced in FACTS.md.
