SnapOtter/tests/fixtures/LICENSES.md

Fixture Provenance & Licensing

All fixtures in tests/fixtures/ must have verified provenance. Only CC0, CC-BY, CC-BY-SA, and public-domain assets are permitted in the final registry. Assets still marked UNVERIFIED-REVIEW require human sign-off before the license hard gate (Phase 2b) can close.

Verified CC0 Assets (Category A: Regenerated / Category B: Replaced)

These assets are generated by project scripts (gen-synthetic-content.mjs) and carry no third-party copyright. They are deterministic and reproducible.

Path	Category	Generator	Notes
content/qr-code.png	A	qrcode lib	Encodes https://snapotter.com, 400x400
content/qr-code.svg	A	qrcode lib	Same data, SVG output
content/qr-code.avif	A	qrcode + Sharp AVIF	Same data, AVIF format
content/barcode.png	A	Code 128B encoder + Sharp	Encodes SNAPOTTER-TEST-123, 699x152
content/barcode.avif	A	Code 128B encoder + Sharp	Same barcode, AVIF format
content/ocr-clean.png	A	Sharp SVG text	"The quick brown fox 12345", 800x200
content/ocr-japanese.png	A	Sharp SVG text	Japanese writing passage, 480x172
content/ocr-chat.jpeg	A	Sharp SVG render	Mock chat UI with legible text bubbles, 480x640
content/cross-format-chat.webp	A	Sharp SVG render	Same mock chat UI as ocr-chat.jpeg, WebP format
content/alt-2page.pdf	A	PDF byte generator	Minimal 2-page PDF with text
content/multipage-6.pdf	A	PDF byte generator	Minimal 6-page PDF with text
content/audio-with-tags.mp3	A	ffmpeg sine 440Hz	1.2s MP3, ID3: "Test Song" / "Test Artist"
content/video-with-meta.mp4	A	ffmpeg color frame	1s, 64x64, solid orange H.264
content/media-30s.wav	A	ffmpeg sine 440Hz	30s, 44100Hz, mono PCM
content/animated-simpsons.gif	B	ffmpeg testsrc	3s test pattern GIF; replaced Homer Simpson clip (Fox/Disney copyright)
content/svg-logo.svg	B	hand-written SVG	Geometric test fixture; replaced ConvertICO brand logo (third-party trademark)
content/multi-face.webp	B	Sharp oval grid	Face-placeholder grid; replaced Shutterstock stock photo #199321457 (watermarked, copyrighted)

Verified CC-BY Assets (Big Buck Bunny, Blender Foundation)

Source: Big Buck Bunny (c) 2008 Blender Foundation, www.bigbuckbunny.org. Downloaded from archive.org item BigBuckBunny_124. License: CC-BY 3.0. All derived from an 8-second segment (30s-38s) of the 720p surround version, scaled to 480x270 with H.264+AAC, then transcoded to each container format.

Path	Format	Notes
content/media-30s.mp4	H.264 + AAC, MP4	Primary hero video (247 KB)
content/hero.mov	H.264 + AAC, MOV	QuickTime container variant
content/hero.webm	VP9 + Opus, WebM	Web container variant
content/hero.mkv	H.264 + AAC, MKV	Matroska container variant
content/hero.avi	MPEG-4 + MP3, AVI	Legacy container variant

Verified CC0 Speech Assets (macOS TTS, locally generated)

Generated via say -v Samantha on macOS, then converted with ffmpeg. No third-party content or copyright. Transcript: "The quick brown fox jumps over the lazy dog. SnapOtter converts and transcribes audio files quickly and reliably."

Path	Format	Notes
content/speech-10s.wav	16kHz mono PCM WAV	Primary speech fixture (~6.7s)
content/speech-10s.mp4	AAC in MP4 container	Speech for video transcription tests
content/speech.flac	FLAC lossless	Audio format variant
content/speech.ogg	Ogg Vorbis	Audio format variant
content/speech.m4a	AAC in M4A container	Audio format variant
content/speech.aac	AAC raw ADTS	Audio format variant
content/speech.opus	Opus	Audio format variant

Synthetic / Project-Generated Assets (pre-existing, not in content/)

The following were generated by project scripts or test infrastructure and carry no third-party copyright concern:

• Root synthetics: test-200x150.png, test-100x100.jpg, test-50x50.webp, test-100x100.svg, test-200x150.heic, test-1x1.png, test-blank.png, test-portrait-tall.png, test-portrait-extreme.png, test-with-exif.jpg, test-scene.png, test-fake-transparency.png, test-3page.pdf
• media/tiny.* (29 formats), documents/tiny.* (17 formats), data/tiny.* (9 formats)
• hostile/* (generated via scripts/generate-hostile-fixtures.mjs)
• security/* (SVG XXE test vectors)
• formats/sample.* (format samples, 35 files)

NEEDS HUMAN LICENSE SIGN-OFF (Category C: UNVERIFIED-REVIEW)

The following content/ assets have unverifiable provenance. They were added during the test coverage expansion (commit babca4cf) without recorded source URLs. They are real-world photos containing faces or identifiable people that require human review to either:

1. Verify they are CC0/CC-BY and record the source, OR
2. Replace them with properly-licensed alternatives.

Do NOT delete these. Depth tests (face detection, colorization, red-eye removal, stress testing) depend on real-world content.

Path	Size	Content Description	Why Review Is Needed
content/portrait-bw.jpeg	2.7 MB	B&W portrait of a woman (3775x5662)	Real photo, no EXIF source. Used for colorization tests.
content/portrait-color.jpg	89 KB	Business portrait, man in suit (572x1024)	Likely AI-generated but unconfirmed. Used for face/portrait tests.
content/portrait-color-dup.jpg	89 KB	Identical to portrait-color.jpg	Deliberate duplicate for dedup testing. Same license concern.
content/portrait-headshot.heic	1.5 MB	HEIC portrait headshot	No EXIF source. Used for HEIC format tests with face content.
content/portrait-isolated.png	81 KB	Same subject as portrait-color, background removed	Derived from portrait-color.jpg. Same license concern.
content/red-eye.jpg	369 KB	Woman with red-eye effect (800x460)	Canon EOS 400D DIGITAL, 2007. Real photo, no source URL.
content/ocr-scanned.pdf	1.0 MB	Scanned document PDF	Unknown scanned content. Used for OCR-on-PDF tests.
content/stress-large.jpg	6.7 MB	Muay Thai boxing match (4000x3000)	Samsung Galaxy S24 Ultra photo. Contains identifiable people.
content/watermark.jpg	87 KB	Mountain lake landscape with text watermark (720x480)	Real landscape photo. Unknown source.
content/motorcycle.heif	224 KB	HEIF image	Content not inspectable without HEIF decoder.

Resolved in This Phase

The following were previously in this section and have been resolved:

• 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.
• content/speech-10s.wav and content/speech-10s.mp4: Replaced with macOS TTS-generated speech (CC0). Transcribable text for Whisper tests.
• content/media-30s.mp4: Replaced with Big Buck Bunny (CC-BY 3.0, Blender Foundation). Real video with motion + audio.

Recommended Actions for Remaining Sign-Off

• 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.
• Red-eye photo: Source the original from the photographer or replace with a CC0 red-eye portrait.
• Stress-large photo: If this is a project contributor's personal photo, have them release it under CC0. Otherwise replace.
• Watermark landscape: Source the underlying landscape photo. The watermark overlay was likely added by the project.
• Motorcycle HEIF: Inspect via HEIF viewer and determine source.
• OCR-scanned PDF: Inspect document content and determine source.