2c3955914ef8b5c537de4d6447adedbc454b5905
The audio codec list sent to Jellyfin comes from MediaCodecList, which describes ExoPlayer — but video does not play through ExoPlayer. Android force-renders every video in the webview <video> element (the interim override in VideoPlayer.svelte) and Linux always has, and Chromium/WebKit decode a far narrower set than the platform does. A motorola edge 30 ships /vendor/etc/media_codecs_dolby_audio.xml, so it reported ac3,eac3; the server direct-played an E-AC-3 track with static=true and the webview built a video decoder and no audio decoder at all — full picture, no sound. The defect is triggered by capability rather than the lack of it, which is why a Fairphone and an Honor tablet play the same file on the same build: without the Dolby decoder they never claim the codec, so the server transcodes to AAC. Confirmed by A/B on the failing device — hevc+eac3 silent, hevc+aac audible, same session, same profile, same direct-play path, audio codec the only variable. video_audio_codecs narrows the platform list to the webview-decodable set for the video direct-play profile only. Audio-only playback really is the native player's, so that profile keeps the full list rather than transcoding music that plays perfectly well. A list with nothing decodable still claims aac, since a profile claiming nothing invites the server to give up instead of transcoding. The video codec list is deliberately untouched: HEVC direct-plays through the webview correctly, so the constraint is specific to audio. Test-first: the tests failed against the old behaviour before the filter existed, including the case built from the phone's real codec list. The requirement-count assertion in extract-traces.test.ts moves 280 -> 281 for the added DR, which is the deliberate edit that test exists to force. Not yet verified on device — the 0.4.7 APK was still building.

JellyTau
A cross-platform Jellyfin client built with Tauri, SvelteKit, and TypeScript.
Business logic lives in a Rust backend; a UI-rich Svelte frontend handles presentation and talks to it over Tauri's IPC. Targets Linux (libmpv) and Android (ExoPlayer).
Getting Started
This project uses bun as its package manager.
# Activate the Rust environment (fish shell)
source "$HOME/.cargo/env.fish"
# Install dependencies
bun install
# Run in development
bun run tauri dev
# Type-check the frontend
bun run check
# Build for Linux
bun run tauri build
# Build for Android
bun run tauri android build
For the full set of build, test, and Android helper scripts, see scripts/README.md.
Documentation
| Topic | Location |
|---|---|
| Architecture overview & subsystem docs | docs/architecture/ |
| Requirements, traceability & technical debt | docs/requirements.md |
| Build & release process | docs/build-release.md |
| Docker builds | docs/build/docker.md |
| Traceability tooling & CI | docs/traceability.md, docs/traceability-ci.md |
| Release checklist | docs/release-checklist.md |
| UX flows | docs/ux-flows.md |
Recommended IDE Setup
VS Code + Svelte + Tauri + rust-analyzer.
License
MIT
Releases
37
JellyTau v0.10.1
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