Long Exposure Camera - fotojockovic.com/longexposure
====================================================
Turns a few seconds of video (live from the camera or a clip you already have) into one long-exposure photo:
silky water, light trails, star trails, comet trails, people removal, darken. Everything runs in the browser;
no picture or video leaves the device.

Our own work (MIT): the alignment engine in src-rs/ compiled to wasm/lxalign.wasm (pyramidal inverse-compositional
Lucas-Kanade on affine-predicted patches, reliability-weighted RANSAC homography with Gauss-Newton refinement,
rolling-shutter residual mesh), the WebGL2 engine in engine.js (frame ring with asynchronous read-back, warping,
the accumulators for mean / light / max / min / comet / running median / robust mean, GPU optical flow and the
tile-max velocity motion fill, the develop shader with highlight roll-off, the keep-sharp mask), the MP4/MOV
demuxer for WebCodecs (mp4demux.js), the EXIF writer (exif.js), the before/after video composer (bavideo.js),
the UI, the texts and the translations. Everything else that ships to the browser:

1. mp4-muxer 5.2.2, Vanilagy - MIT. https://github.com/Vanilagy/mp4-muxer  (mp4-muxer.js, used for the
   before/after MP4)
     MIT License
     Copyright (c) 2023 Vanilagy
     Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
     documentation files (the "Software"), to deal in the Software without restriction, including without
     limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
     Software, and to permit persons to whom the Software is furnished to do so, subject to the following
     conditions: The above copyright notice and this permission notice shall be included in all copies or
     substantial portions of the Software.
     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
     TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     DEALINGS IN THE SOFTWARE.

2. Sample clips (demo/*.mp4: cut, scaled and re-encoded to H.264; demo/*.jpg are stills and results made from
   them). Wikimedia Commons, both CC0 1.0 (public domain dedication, checked 2026-10-16):
     demo/waterfall.mp4 - "Mt Nimrod Scenic Reserve - Waterfall on Nimrod Stream (video)", David Nind, 2025
       https://commons.wikimedia.org/wiki/File:Mt_Nimrod_Scenic_Reserve_-_Waterfall_on_Nimrod_Stream_(video).webm
       (first 4.6 s, handheld)
     demo/highway.mp4   - "Berlin Bundesautobahn 100 2026-03-25 mov04", LarsMueller, 2026
       https://commons.wikimedia.org/wiki/File:Berlin_Bundesautobahn_100_2026-03-25_mov04.webm
       (first 10 s, handheld)
   og.jpg is made from these clips with this tool.

3. Fonts from Google Fonts (self-hosted), SIL Open Font License 1.1: Inter Tight (Rasmus Andersson et al.),
   Instrument Serif (Instrument).

4. Shared helpers of the fotojockovic.com tools (/static/tools/common/i18n.js, sheets.js, rail.js): our own.
   Language flags: simplified drawings made for these tools; the national flags are public-domain symbols.

The Rust kernel has no third-party crates. No GPL code is shipped. No machine-learning model is used.

Self-hosted web fonts (2026-10-19): Inter Tight, Instrument Serif. SIL Open Font License 1.1. The woff2 files are the ones Google Fonts
serves (latin, latin-ext, cyrillic, greek subsets where the family has them), stored on our own server under
/static/tools/common/fonts/<family>/ with each family's licence text (OFL.txt) next to them; stylesheet
/static/tools/common/fonts/ui.css. No font request goes to Google.