| 1 | # Attributions |
| 2 | |
| 3 | html-video is licensed under Apache-2.0. Some of its bundled video **templates** are |
| 4 | derived from open-source design skills under permissive licenses. This file records every |
| 5 | upstream we built on, its real copyright holder, and its license, as required by the |
| 6 | upstream licenses and by [RFC-07](research/2026-06-04-spec-07-ppt-to-template.md) (our |
| 7 | PPT-skill → template conversion standard). |
| 8 | |
| 9 | > **What "derived" means here**: we transformed static presentation/slide designs into |
| 10 | > animated [hyperframes](https://github.com/heygen-com/hyperframes) video templates — |
| 11 | > rebuilt as original CSS/SVG keyframe timelines, re-coloured/re-typed where noted, with |
| 12 | > our own sample data. No upstream source code is copied verbatim. The upstream licenses |
| 13 | > (MIT) permit commercial use and derivative works; we attribute them regardless. |
| 14 | |
| 15 | Many of these design styles are themselves homages to real-world design studios. Where a |
| 16 | template is inspired by a specific studio, we record that as the **L1 origin** in the |
| 17 | template's `provenance` block — as a factual statement of inspiration, never as a claim of |
| 18 | affiliation or endorsement. Studio names are **not** used as template names. |
| 19 | |
| 20 | --- |
| 21 | |
| 22 | ## Upstream design skills |
| 23 | |
| 24 | ### huashu-design |
| 25 | |
| 26 | - **Copyright holder**: alchaincyf (花叔 · 花生) © 2026 |
| 27 | - **License**: MIT |
| 28 | - **Source**: https://github.com/alchaincyf/huashu-design |
| 29 | - **Used by templates**: |
| 30 | - `frame-pentagram-stat` — via `assets/showcases/ppt/ppt-pentagram.html` |
| 31 | (L1 inspiration: Pentagram / Michael Bierut) |
| 32 | - `frame-build-minimal` — via `assets/showcases/ppt/ppt-build.html` |
| 33 | (L1 inspiration: Build, London design studio) |
| 34 | - `frame-takram-organic` — via `assets/showcases/ppt/ppt-takram.html` |
| 35 | (L1 inspiration: Takram, Japanese design firm) |
| 36 | |
| 37 | ### frontend-slides |
| 38 | |
| 39 | - **Copyright holder**: Zara Zhang © 2025 |
| 40 | - **License**: MIT |
| 41 | - **Source**: https://github.com/zarazhangrui/frontend-slides |
| 42 | - **Used by templates**: |
| 43 | - `frame-bold-signal` — via `STYLE_PRESETS.md` (preset "Bold Signal") |
| 44 | - `frame-creative-voltage` — via `STYLE_PRESETS.md` (preset "Creative Voltage") |
| 45 | - `frame-electric-studio` — via `STYLE_PRESETS.md` (preset "Electric Studio") |
| 46 | |
| 47 | (These three are original presets composed by the skill author — no specific real-world |
| 48 | studio is the L1 origin.) |
| 49 | |
| 50 | --- |
| 51 | |
| 52 | ## Studio names referenced as L1 inspiration |
| 53 | |
| 54 | The following real-world design studios / designers are named in template `provenance.origin` |
| 55 | purely as a record of stylistic inspiration. html-video is **not affiliated with, endorsed by, |
| 56 | or sponsored by** any of them. |
| 57 | |
| 58 | - **Pentagram** (and Michael Bierut) — pentagram.com |
| 59 | - **Build** — London design studio |
| 60 | - **Takram** — takram.com |
| 61 | |
| 62 | --- |
| 63 | |
| 64 | *Per-template details (the full three-layer `provenance` block: origin / via_skill / |
| 65 | transformation) live in each template's `template.html-video.yaml`.* |
| 66 |