Open-Source Licenses
Cutlia runs on open-source work — thank you to everyone who makes it. Project names open each project's website or source code; license names open the license text.
Video processing
- Mediabunny (Vanilagy) — Mozilla Public License 2.0
- @mediabunny/mp3-encoder (Vanilagy) — Mozilla Public License 2.0
- @mediabunny/aac-encoder (Vanilagy) — Mozilla Public License 2.0
- LAME MP3 Encoder (The LAME Project) — GNU Lesser General Public License 2.0
- FFmpeg (The FFmpeg developers) — GNU Lesser General Public License 2.1
- Nellymoser decoder (Loic Minier, Benjamin Larsson et al.) — MIT License
- libav.js (Yahweasel) — ISC License
- emfiberthreads (Yahweasel) — BSD Zero Clause License
- zlib (Jean-loup Gailly and Mark Adler) — zlib License
The complete source code of FFmpeg, LAME and zlib — exactly the releases built into this site — is published on this site, together with the code that builds and calls them: libav.js’s, Mediabunny’s, and our build scripts and small changes. Start with /source/README.txt (in English): it says which file builds what, with each file’s checksum.
Speech recognition
- Whisper (OpenAI; converted to ONNX by the ONNX Community) — MIT License
- Transformers.js (Hugging Face) — Apache License 2.0
- @huggingface/jinja (Hugging Face) — MIT License
- Tokenizers.js (Hugging Face) — Apache License 2.0
- ONNX Runtime (Microsoft) — MIT License
- pyannote segmentation 3.0 (Hervé Bredin and the pyannote.audio contributors) — MIT License
- WeSpeaker ResNet34-LM (The WeSpeaker team (Hongji Wang et al.); converted to ONNX with 8-bit weights by Hugging Face) — Creative Commons Attribution 4.0
- opencc-js (The nk2028 Project) — MIT License
- OpenCC dictionaries (Carbo Kuo (BYVoid) and the OpenCC contributors) — Apache License 2.0
Finding moments and faces
- Qwen3-4B (Qwen Team, Alibaba Cloud; converted to ONNX with 4-bit weights by the ONNX Community) — Apache License 2.0
- MediaPipe Tasks Vision (Google) — Apache License 2.0
- BlazeFace (full range) (Google) — Apache License 2.0
- EfficientDet-Lite0 (Google (the TensorFlow Lite Model Maker team); MediaPipe build) — Apache License 2.0
Removing backgrounds
- Selfie Segmenter (Google; MediaPipe) — Apache License 2.0
- Pose Landmarker (full) (Google; MediaPipe (BlazePose GHUM)) — Apache License 2.0
Upscaling video
- Real-ESRGAN (realesr-general-x4v3, realesr-animevideov3) (Xintao Wang, Liangbin Xie, Chao Dong, Ying Shan) — BSD 3-Clause License
Documents (PDF)
- PDFKit (Devon Govett) — MIT License
- fontkit (Devon Govett) — MIT License
- restructure (Devon Govett) — MIT License
- brotli.js (Devon Govett) — MIT License
- unicode-properties (Devon Govett) — MIT License
- unicode-trie (Devon Govett) — MIT License
- dfa (Devon Govett) — MIT License
- tiny-inflate (Devon Govett) — MIT License
- linebreak (Devon Govett) — MIT License
- png.js (Devon Govett) — MIT License
- fflate (Arjun Barrett) — MIT License
- noble-hashes (Paul Miller) — MIT License
- noble-ciphers (Paul Miller) — MIT License
- clone (Paul Vorbach) — MIT License
- fast-deep-equal (Evgeny Poberezkin) — MIT License
- base64-js (T. Jameson Little) — MIT License
- tslib (Microsoft) — BSD Zero Clause License
- bidi-js (Jason Johnston) — MIT License
- Noto fonts (The Noto Project Authors) — SIL Open Font License 1.1
- Noto Sans CJK (Adobe and Google (The Noto Project Authors)) — SIL Open Font License 1.1
Website
- Next.js (Vercel) — MIT License
- @swc/helpers (The SWC contributors) — Apache License 2.0
- process (Roman Shtylman) — MIT License
- React (Meta) — MIT License
- Tailwind CSS (Tailwind Labs) — MIT License
- Lucide (Lucide Contributors) — ISC License
- tailwind-merge (Dany Castillo) — MIT License
- Geist (Vercel) — SIL Open Font License 1.1
- Inter (Rasmus Andersson) — SIL Open Font License 1.1
Music library
The songs offered in Add Music to Video, served from this site. Each title opens where the recording and its license come from; the license name opens the license.
- Sneaky Snitch (Kevin MacLeod) — CC BY 4.0
- Monkeys Spinning Monkeys (Kevin MacLeod) — CC BY 4.0
- Fluffing a Duck (Kevin MacLeod) — CC BY 4.0
- Scheming Weasel (faster version) (Kevin MacLeod) — CC BY 4.0
- Investigations (Kevin MacLeod) — CC BY 4.0
- Local Forecast - Elevator (Kevin MacLeod) — CC BY 4.0
- In the Hall of the Mountain King (Edvard Grieg; Czech National Symphony Orchestra (Musopen)) — Public domain
- Can-Can (Infernal Galop) (Jacques Offenbach; Musopen) — Public domain
- Flight of the Bumblebee (Nikolai Rimsky-Korsakov; United States Air Force Band – Strolling Strings) — Public domain
- The Entertainer (Kevin MacLeod) — CC BY 4.0
- Pixel Peeker Polka - faster (Kevin MacLeod) — CC BY 4.0
- Run Amok (Kevin MacLeod) — CC BY 4.0
- Merry Go (Kevin MacLeod) — CC BY 4.0
- Hyperfun (Kevin MacLeod) — CC BY 4.0
- Carefree (Kevin MacLeod) — CC BY 4.0
- Life of Riley (Kevin MacLeod) — CC BY 4.0
- Funkorama (Kevin MacLeod) — CC BY 4.0
- Voxel Revolution (Kevin MacLeod) — CC BY 4.0
- One Night In France (HoliznaCC0) — CC0
- Canon Event (HoliznaCC0) — CC0
- Wallpaper (Kevin MacLeod) — CC BY 4.0
- Cipher (Kevin MacLeod) — CC BY 4.0
- Hitman (Kevin MacLeod) — CC BY 4.0
- Volatile Reaction (Kevin MacLeod) — CC BY 4.0
- William Tell Overture (Finale) (Gioachino Rossini; United States Marine Band) — Public domain
- Winter (The Four Seasons) (Antonio Vivaldi; United States Air Force Band – Air Force Strings) — Public domain
- Canon in D (Johann Pachelbel; United States Air Force Band – Strolling Strings) — Public domain
- Gymnopédie No. 1 (Erik Satie; Robin Alciatore (Musopen)) — Public domain
- Für Elise (Ludwig van Beethoven; Gaodifan) — CC0
- Funeral March (Frédéric Chopin; Andreas Xenopoulos (Musopen)) — CC0
How these files differ from the originals: re-encoded as 128 kbps MP3 at 44.1 kHz, volume evened out, silence trimmed from the ends and very short fades added. “William Tell Overture (Finale)” is cut to start at the finale's fanfare, and “Funeral March” ends after the march.
Caption fonts
These fonts are served from this site to draw your captions. Each font name opens the license file that comes with it.
SIL Open Font License 1.1: Montserrat, Poppins, Inter, Roboto, Geist, DM Sans, Nunito, Rubik, Noto Sans, Anton, Bebas Neue, Oswald, Archivo Black, Space Grotesk, Bangers, Lilita One, Righteous, Fredoka, Caveat, Playfair Display
Apache License 2.0: Luckiest Guy, Permanent Marker