CaptionFX - open-source notices
================================

CaptionFX renders captions with open-source software. This file lists what is used,
under which licence, and where the full licence text is. It is generated from the
running versions by scripts/render_probe/c1_licenses.py --write-notices; it is not
maintained by hand.

Nothing here is legal advice. It records the licences of the components and where
their texts and sources are.


1. In your browser (delivered as part of this web application)
--------------------------------------------------------------

@biliblitz/libass-wasm 0.0.3
  Licence: LGPL-2.1-or-later AND (FTL OR GPL-2.0-or-later) AND MIT AND MIT-Modern-Variant AND ISC AND NTP AND Zlib AND BSL-1.0
  Source:  git+https://github.com/biliblitz/libass-wasm.git
  Used as: the exact caption preview in the editor, loaded as a separate,
           replaceable chunk. The package is used unmodified, exactly as
           published on npm.
  Components compiled into its WebAssembly build: brotli, expat, fontconfig, freetype, fribidi, harfbuzz, libass, subtitlesoctopus
  Full texts, distributed with this application:
    /third-party/libass-wasm-LICENSE.txt    (the package's own MIT licence)
    /third-party/libass-wasm-COPYRIGHT.txt  (every component's copyright and licence)

Caption fonts are served to the browser by the CaptionFX API to draw the preview;
they are the same files listed in section 3.


2. On the CaptionFX servers (not distributed to you)
-----------------------------------------------------
These render the final video. They run as services; no copy is distributed.

ffmpeg 7:7.1.5-0+deb13u1  -  LGPL-2.1+, LGPL-2.1+ and Sundry
libass9 1:0.17.3-1+deb13u1  -  ISC, NTP
libharfbuzz0b 10.2.0-1+deb13u1  -  MIT, MIT
libfreetype6 2.13.3+dfsg-1+deb13u1  -  FTL, FTL and Expat
libfribidi0 1.0.16-1  -  LGPL-2.1+, LGPL-2.1+
fontconfig 2.15.0-2.3

GPL-2.0-or-later: the Debian build enables --enable-gpl (it links libx264). ffmpeg is invoked as a separate executable by the backend (subprocess), and the image is run as a service, not distributed to users.

fontTools 4.65.0 (MIT) - measures font faces in the API; never sent to a browser.


3. Caption fonts
----------------
147 font files ship with CaptionFX: 9 x Apache-2.0, 138 x OFL-1.1.
69 of them are static weight instances generated from the variable originals with fontTools; each keeps its original
licence, and a family whose licence reserves its name is renamed rather than
shipped under the reserved name.

The full licence texts for every bundled font are in the CaptionFX source
repository under fonts/LICENSES/, alongside fonts/INVENTORY.json, which records
each file's family, licence, source and checksum.

The six built-in caption recipes use:
  Anton          OFL-1.1      Anton-Regular.ttf
  Inter          OFL-1.1      Inter[opsz,wght].ttf
  Lora           OFL-1.1      Lora.ttf
  Mukta          OFL-1.1      Mukta-Regular.ttf