# Source and license record

Checked on 2026-07-22 UTC. No YouTube footage or unlicensed media was used.

## Selected source: Times Square

- Title: [Times Square 1 2023-06-10.webm](https://commons.wikimedia.org/wiki/File:Times_Square_1_2023-06-10.webm)
- Creator: FASTILY
- Provenance: the Wikimedia Commons file page identifies it as the creator's own work.
- License: [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/) (CC BY-SA 4.0). The file page explicitly permits sharing and adaptation with attribution, a license link, an indication of changes, and ShareAlike treatment for the adaptation.
- Downloaded media: [Wikimedia Commons 720p VP9 transcode](https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8f/Times_Square_1_2023-06-10.webm/Times_Square_1_2023-06-10.webm.720p.vp9.webm)
- Downloaded file: `source-clips/times-square-2023-cc-by-sa-4.webm`
- Downloaded file facts: 3,260,997 bytes; 1280×720; VP9; 60 fps; 10.117 seconds; SHA-256 `bfdc4882d9d81a9818a9e2da9b0d1509bd718b2529d64eee7894bf935523d93a`.
- Inference input: `source-clips/times-square-2.8s-input.mp4`
- Changes before inference: used the Commons 720p transcode; trimmed approximately 0.3–3.1 seconds; resampled to 24 fps; transcoded to H.264/yuv420p; removed audio. Result: 3,182,416 bytes; 1280×720; 67 decoded frames; 2.791667 seconds; SHA-256 `c889cf25aff390650b67b9b77ed2427e02f2c8b044b105e2bb101bba282738fb`.
- AI transformation: processed through the live `Lightricks/ltx-2-3-22b-ic-lora-clean-plate` `/generate` video-to-video endpoint to remove people and vehicles. The raw returned adaptation is at `live-output/follow-up/times-square-clean-plate-live.mp4`.
- Required reuse notice: any distribution of the transformed adaptation or a future showcase containing it must retain attribution, link CC BY-SA 4.0, identify the trimming/transcoding/AI changes, and use CC BY-SA 4.0 or a compatible license. No endorsement by FASTILY or Wikimedia Commons is implied.
- Suggested credit: “Times Square 1 2023-06-10” by FASTILY, via Wikimedia Commons, CC BY-SA 4.0; trimmed, transcoded, and transformed with LTX-2.3 Clean Plate.

## Alternative inspected source: Shibuya Crossing

- Title: [Shibuya crossing time-lapse 2019-01-05.webm](https://commons.wikimedia.org/wiki/File:Shibuya_crossing_time-lapse_2019-01-05.webm)
- Creator: Asanagi
- Provenance: the Wikimedia Commons file page identifies it as the creator's own work.
- License: [CC0 1.0 Universal Public Domain Dedication](https://creativecommons.org/publicdomain/zero/1.0/). Attribution is not legally required; best-practice credit would be “Asanagi, via Wikimedia Commons, CC0 1.0.”
- Downloaded media: [Wikimedia Commons original WebM](https://upload.wikimedia.org/wikipedia/commons/4/47/Shibuya_crossing_time-lapse_2019-01-05.webm)
- Downloaded file: `source-clips/shibuya-crossing-timelapse-cc0.webm`
- Downloaded file facts: 2,523,504 bytes; 1920×1080; VP9; 30 fps; 34.633 seconds; SHA-256 `dfbf1637bbe87dcefacdcde7e9f9585b4e7f24d0588be70e4d76c64e1f87762b`.
- Selection decision: not used for live inference. Three native frames confirmed a dense elevated Shibuya view, but the source is a time-lapse with visible temporal blending; the real-time Times Square clip was the clearer demonstration input.

## License decision

The selected footage is legally reusable under CC BY-SA 4.0 with the obligations above. The raw endpoint output is preserved as evidence, not published as a production showcase. If it is later distributed, it must carry the selected source's attribution and ShareAlike terms.