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SnapOtter
09b26718e1
- Video: Big Buck Bunny (Blender Foundation, CC-BY 3.0) 8s segment
replaces ffmpeg testsrc2 synthetic; container variants hero.{mov,webm,mkv,avi}
- Speech: macOS TTS (CC0) replaces unknown-origin speech files;
format variants speech.{flac,ogg,m4a,aac,opus} for depth tests
- Chat images: Sharp SVG mock chat UI (CC0) replaces third-party
app screenshots with personal content
- Registry: video.hero.{mov,webm,mkv,avi}, audio.speech.{flac,ogg,m4a,aac,opus}
- Integrity guard: 19 ffprobe assertions (was 8)
- Parity: 13177 passed, 0 dropped
121 lines
7.7 KiB
Markdown
121 lines
7.7 KiB
Markdown
# Fixture Provenance & Licensing
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All fixtures in `tests/fixtures/` must have verified provenance. Only CC0, CC-BY,
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CC-BY-SA, and public-domain assets are permitted in the final registry. Assets
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still marked `UNVERIFIED-REVIEW` require human sign-off before the license hard
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gate (Phase 2b) can close.
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## Verified CC0 Assets (Category A: Regenerated / Category B: Replaced)
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These assets are generated by project scripts (`gen-synthetic-content.mjs`) and
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carry no third-party copyright. They are deterministic and reproducible.
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| Path | Category | Generator | Notes |
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|------|----------|-----------|-------|
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| `content/qr-code.png` | A | qrcode lib | Encodes `https://snapotter.com`, 400x400 |
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| `content/qr-code.svg` | A | qrcode lib | Same data, SVG output |
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| `content/qr-code.avif` | A | qrcode + Sharp AVIF | Same data, AVIF format |
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| `content/barcode.png` | A | Code 128B encoder + Sharp | Encodes `SNAPOTTER-TEST-123`, 699x152 |
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| `content/barcode.avif` | A | Code 128B encoder + Sharp | Same barcode, AVIF format |
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| `content/ocr-clean.png` | A | Sharp SVG text | "The quick brown fox 12345", 800x200 |
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| `content/ocr-japanese.png` | A | Sharp SVG text | Japanese writing passage, 480x172 |
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| `content/ocr-chat.jpeg` | A | Sharp SVG render | Mock chat UI with legible text bubbles, 480x640 |
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| `content/cross-format-chat.webp` | A | Sharp SVG render | Same mock chat UI as ocr-chat.jpeg, WebP format |
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| `content/alt-2page.pdf` | A | PDF byte generator | Minimal 2-page PDF with text |
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| `content/multipage-6.pdf` | A | PDF byte generator | Minimal 6-page PDF with text |
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| `content/audio-with-tags.mp3` | A | ffmpeg sine 440Hz | 1.2s MP3, ID3: "Test Song" / "Test Artist" |
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| `content/video-with-meta.mp4` | A | ffmpeg color frame | 1s, 64x64, solid orange H.264 |
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| `content/media-30s.wav` | A | ffmpeg sine 440Hz | 30s, 44100Hz, mono PCM |
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| `content/animated-simpsons.gif` | B | ffmpeg testsrc | 3s test pattern GIF; **replaced** Homer Simpson clip (Fox/Disney copyright) |
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| `content/svg-logo.svg` | B | hand-written SVG | Geometric test fixture; **replaced** ConvertICO brand logo (third-party trademark) |
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| `content/multi-face.webp` | B | Sharp oval grid | Face-placeholder grid; **replaced** Shutterstock stock photo #199321457 (watermarked, copyrighted) |
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## Verified CC-BY Assets (Big Buck Bunny, Blender Foundation)
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Source: Big Buck Bunny (c) 2008 Blender Foundation, www.bigbuckbunny.org.
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Downloaded from archive.org item `BigBuckBunny_124`. License: CC-BY 3.0.
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All derived from an 8-second segment (30s-38s) of the 720p surround version,
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scaled to 480x270 with H.264+AAC, then transcoded to each container format.
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| Path | Format | Notes |
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|------|--------|-------|
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| `content/media-30s.mp4` | H.264 + AAC, MP4 | Primary hero video (247 KB) |
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| `content/hero.mov` | H.264 + AAC, MOV | QuickTime container variant |
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| `content/hero.webm` | VP9 + Opus, WebM | Web container variant |
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| `content/hero.mkv` | H.264 + AAC, MKV | Matroska container variant |
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| `content/hero.avi` | MPEG-4 + MP3, AVI | Legacy container variant |
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## Verified CC0 Speech Assets (macOS TTS, locally generated)
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Generated via `say -v Samantha` on macOS, then converted with ffmpeg. No
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third-party content or copyright. Transcript: "The quick brown fox jumps over
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the lazy dog. SnapOtter converts and transcribes audio files quickly and
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reliably."
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| Path | Format | Notes |
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|------|--------|-------|
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| `content/speech-10s.wav` | 16kHz mono PCM WAV | Primary speech fixture (~6.7s) |
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| `content/speech-10s.mp4` | AAC in MP4 container | Speech for video transcription tests |
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| `content/speech.flac` | FLAC lossless | Audio format variant |
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| `content/speech.ogg` | Ogg Vorbis | Audio format variant |
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| `content/speech.m4a` | AAC in M4A container | Audio format variant |
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| `content/speech.aac` | AAC raw ADTS | Audio format variant |
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| `content/speech.opus` | Opus | Audio format variant |
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## Synthetic / Project-Generated Assets (pre-existing, not in content/)
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The following were generated by project scripts or test infrastructure and carry
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no third-party copyright concern:
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- Root synthetics: `test-200x150.png`, `test-100x100.jpg`, `test-50x50.webp`,
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`test-100x100.svg`, `test-200x150.heic`, `test-1x1.png`, `test-blank.png`,
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`test-portrait-tall.png`, `test-portrait-extreme.png`, `test-with-exif.jpg`,
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`test-scene.png`, `test-fake-transparency.png`, `test-3page.pdf`
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- `media/tiny.*` (29 formats), `documents/tiny.*` (17 formats), `data/tiny.*` (9 formats)
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- `hostile/*` (generated via `scripts/generate-hostile-fixtures.mjs`)
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- `security/*` (SVG XXE test vectors)
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- `formats/sample.*` (format samples, 35 files)
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## NEEDS HUMAN LICENSE SIGN-OFF (Category C: UNVERIFIED-REVIEW)
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The following `content/` assets have unverifiable provenance. They were added
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during the test coverage expansion (commit `babca4cf`) without recorded source
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URLs. They are real-world photos containing faces or identifiable people that
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require human review to either:
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1. Verify they are CC0/CC-BY and record the source, OR
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2. Replace them with properly-licensed alternatives.
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**Do NOT delete these.** Depth tests (face detection, colorization, red-eye
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removal, stress testing) depend on real-world content.
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| Path | Size | Content Description | Why Review Is Needed |
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|------|------|---------------------|---------------------|
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| `content/portrait-bw.jpeg` | 2.7 MB | B&W portrait of a woman (3775x5662) | Real photo, no EXIF source. Used for colorization tests. |
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| `content/portrait-color.jpg` | 89 KB | Business portrait, man in suit (572x1024) | Likely AI-generated but unconfirmed. Used for face/portrait tests. |
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| `content/portrait-color-dup.jpg` | 89 KB | Identical to portrait-color.jpg | Deliberate duplicate for dedup testing. Same license concern. |
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| `content/portrait-headshot.heic` | 1.5 MB | HEIC portrait headshot | No EXIF source. Used for HEIC format tests with face content. |
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| `content/portrait-isolated.png` | 81 KB | Same subject as portrait-color, background removed | Derived from portrait-color.jpg. Same license concern. |
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| `content/red-eye.jpg` | 369 KB | Woman with red-eye effect (800x460) | Canon EOS 400D DIGITAL, 2007. Real photo, no source URL. |
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| `content/ocr-scanned.pdf` | 1.0 MB | Scanned document PDF | Unknown scanned content. Used for OCR-on-PDF tests. |
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| `content/stress-large.jpg` | 6.7 MB | Muay Thai boxing match (4000x3000) | Samsung Galaxy S24 Ultra photo. Contains identifiable people. |
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| `content/watermark.jpg` | 87 KB | Mountain lake landscape with text watermark (720x480) | Real landscape photo. Unknown source. |
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| `content/motorcycle.heif` | 224 KB | HEIF image | Content not inspectable without HEIF decoder. |
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### Resolved in This Phase
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The following were previously in this section and have been resolved:
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- **`content/cross-format-chat.webp`** and **`content/ocr-chat.jpeg`**: Replaced with CC0 mock chat-bubble images (Sharp SVG render). No third-party UI content.
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- **`content/speech-10s.wav`** and **`content/speech-10s.mp4`**: Replaced with macOS TTS-generated speech (CC0). Transcribable text for Whisper tests.
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- **`content/media-30s.mp4`**: Replaced with Big Buck Bunny (CC-BY 3.0, Blender Foundation). Real video with motion + audio.
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### Recommended Actions for Remaining Sign-Off
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- **Portraits** (5 files): If AI-generated, confirm the generator and its license terms. If stock photos, identify the source. Consider replacing with CC0 portraits from a known source.
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- **Red-eye photo**: Source the original from the photographer or replace with a CC0 red-eye portrait.
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- **Stress-large photo**: If this is a project contributor's personal photo, have them release it under CC0. Otherwise replace.
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- **Watermark landscape**: Source the underlying landscape photo. The watermark overlay was likely added by the project.
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- **Motorcycle HEIF**: Inspect via HEIF viewer and determine source.
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- **OCR-scanned PDF**: Inspect document content and determine source.
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