- eframe web runner on WebGPU (WebGL2 fallback; GPU compositor on WebGPU, CPU on WebGL2).
- fs: virtual file table of File/Blob handles, 1 MiB chunked async range reads with an
LRU cache and read-ahead (pending + retry instead of blocking), downloads for written
files, /opfs/ paths written to OPFS.
- import: File System Access picker / <input type=file>, drag-and-drop anywhere,
container index prefetch (moov wherever it is), retried imports; project open/save.
- recovery: OPFS auto-save snapshot while dirty, media copies, reopened on next visit.
- audio: AudioWorklet output fed ahead from the UI thread; played-frame audio clock.
- webcodecs: H.264/HEVC/VP9/AV1 MP4/MOV decoded by the browser VideoDecoder via a
reader opener (fallback to our decoders on any error), probed with isConfigSupported.
- api: window.filmcraft (execute/request/commands/screenshot/importFiles/importUrl/
openProject/files/readFile/info).
- cargo xtask web [--dev] [--serve PORT] (wasm-bindgen CLI); xtask wasm also checks
filmcraft-ui-egui and filmcraft-web; layer L6 for the web app.
- Original web icon (favicon.svg) with attribution sidecar; docs/web.md; headless-Chrome
smoke test (tests/smoke.mjs).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas