catacomb/ROADMAP.md

Roadmap

North star

Surpass Tartube in every dimension.

A structured analysis of Tartube's codebase, data model, operations, and configuration surface lives at docs/tartube-spec.md; it's what the Phase 1 parity work traced back to.

Tartube is the mature open-source yt-dlp GUI and the obvious benchmark for a project in this space. yt-offline has architectural advantages Tartube can't catch up on quickly (Rust + axum + a real web UI + bundled toolchain + a modern security model). As of 2026-06 we're at feature parity — every Tartube subsystem is matched or led; the remaining gap is years-of-edge- cases maturity. The plan below is now mostly "surpass" work.

Current state vs Tartube (2026-06-07)

Area	Us	Tartube	Verdict
yt-dlp wrapping	✅	✅	Tied
Multi-platform sources	✅ first-class per-platform routing	✅ generic	We lead
Web UI accessible from any device	✅	❌ desktop only	We lead
Single-binary distribution	✅ Rust binary + venv installer	❌ Python+GTK deps	We lead
Per-distro packaging	✅ .deb / .rpm / AppImage + PKGBUILD + CI	✅ .deb .rpm .pkg.tar.zst	Tied
Security model (auth, CSP, rate-limit)	✅	❌ never network-facing	We lead
Plex export with NFO sidecars	✅	❌	We lead
Anti-bot stack (impersonation + POT + nightly)	✅ curl_cffi + bgutil-pot + nightly yt-dlp	❌ user-installed	We lead
Cookie freshness / anonymous-jar warning	✅	❌	We lead
Auto-retry + adaptive throttle on rate-limit	✅	❌	We lead
Configurable YouTube player clients	✅ global + per-channel	❌	We lead
Themes	✅ 10 themes	❌ GTK default	We lead
Live-stream recording	✅	✅ recent	Tied
WebSocket real-time progress	✅	❌ polling	We lead
Mobile-responsive web UI	✅	❌ desktop only	We lead
Per-channel custom download options	✅ JSON-blob overrides	✅ deep	Tied
Subtitle controls (auto / embed / convert)	✅ global + per-channel	✅	Tied
Folder/group hierarchy	✅ N-level nesting	✅ N-level	Tied
Filter UI (date / size / watched + presets)	✅ chip-style + named presets	✅ rich + presets	Tied
Format conversion / re-encode	✅ remux / H.264 / audio post-pass	✅ ffmpeg pipeline	Tied
Comments capture	✅ --write-comments + viewer	✅ raw JSON	We lead
System tray	✅ ksni (Linux SNI)	✅ GTK	Tied
Library backup + restore	✅ DB snapshot + idempotent import	✅	Tied
Per-channel notes / annotations	✅ searchable	✅	Tied
Error classification + suggested fixes	✅ 9-class + hints	✅ rescue recipes	Tied
Stability hardening	✅ crash log + disk-full preflight + hang watchdog + poison-recover locks	partial	We lead
Desktop UI scale	✅ global egui zoom, persisted	✅ GTK native	Tied
Maturity / edge cases	~months	~years	Tartube leads

Score: 14 ahead, 1 behind, 13 tied. Phase 1 (Tartube parity) is complete — the only thing Tartube still leads on is years-of-edge-cases maturity, which is time, not a feature. Everything below is "surpass" territory plus test/doc investment.

Phase 1 — COMPLETE

All Tartube parity items shipped. For the record, the last to land:

• 1.7 Format conversion — post-download ffmpeg pass with three modes (remux→mp4, re-encode→H.264/AAC at a CRF, audio extraction), global [convert] config + per-channel override, keep-original toggle, surfaced as a distinct transcode job.
• 1.3+ Filter presets — name a chip-filter set and re-apply it from the filter row; persisted in localStorage.

See Recently shipped for the full list.

Phase 2 — Polish where Tartube is mature

Things we win on architecturally but lose on real-world ruggedness.

The two genuinely-open items are 2.1 integration tests and 2.2 docs site — both investment rather than features. 2.3 / 2.4 / 2.5 are done.

2.1 Integration test coverage

98 unit tests are good for parsers/helpers/resolvers, but don't cover end-to-end correctness. We need real-yt-dlp integration tests against a recorded fixture corpus.

• Mock-server fixtures for yt-dlp's JSON output.
• cargo test --features integration exercises the full download pipeline against the mock.
• Headless web-UI tests via headless_chrome or playwright.

2.2 Documentation site

README is the only user-facing doc. Need a real docs site with:

• Per-platform setup guide (deeper than current README sections).
• Troubleshooting playbook for the top 10 yt-dlp errors.
• Architecture page (for contributors).
• Hosted via Codeberg Pages.

2.3 Error recovery / structured logging — DONE

Shipped a 9-class error classifier (RateLimited, MembersOnly, Geoblocked, NotFound, CodecMissing, DiskFull, NetworkError, BadCookies, Other) with a one-line suggested fix per class, surfaced in both UIs. Remaining stretch: opt-in anonymous error telemetry to surface new patterns.

2.4 Library restore — DONE

POST /api/restore/db + file pickers in both UIs do an idempotent merge (watched / positions / flags / folders / notes), schema-validated.

2.5 Stability hardening — DONE

crash.log panic hook · disk-full preflight (synthetic DiskFull job) · auto-retry + adaptive throttle on transient failures · hang watchdog (SIGKILL a job silent for 5 min, classified retryable so it re-queues) · util::LockExt::lock_recover() recovers poisoned WebState mutexes instead of cascading one handler's panic into a dead server.

Phase 3 — Surpass

Once we're at parity, we push past Tartube on its own ground.

3.1 Cross-compile macOS + Windows binaries

The Linux packaging (1.8) is done; this is the natural next reach. Blocked on abstracting the Linux-only bits behind a per-OS backend — the ksni tray and the rfd xdg-portal file dialog have no Windows/macOS path yet. Once the tray is a trait with per-OS impls, the rest of the stack (eframe/wgpu, axum, rusqlite-bundled) already cross-compiles.

3.2 Android client

Native client over the existing web API. Background download via WorkManager + JobScheduler. Push notifications via Tailscale-routed HTTPS or a userland push channel.

3.4 Smart auto-tagging

Cluster channels by uploader frequency, content type, and metadata. Suggest groups ("looks like a music channel — move to Music?"). Builds on Phase 1.2's group system.

3.5 Federation / multi-host

A "remote library" mode where one yt-offline instance can browse another's library (read-only) over the same axum API. Useful for a "home archive + travel laptop" setup.

3.6 Comment viewer enhancements

The comments capture (1.4) already ships a viewer. Surpass Tartube (which only dumps the raw JSON) with:

• Threaded display with collapse/expand at any depth.
• Full-text search within a video's comments.
• "New since last visit" highlights.
• Sentiment / keyword filter chips.

3.7 Library-wide deduplication

Right now maintenance finds duplicates only by yt-dlp video ID — it catches "you downloaded this exact video twice," but not the same content re-uploaded under a different ID (a reupload, a cross-platform mirror, a re-encode). Surpass by perceptual-hashing sampled frames (ffmpeg → dHash) and grouping videos whose fingerprints match within a Hamming threshold, even across IDs/resolutions/encodings. A new video_fingerprint cache table (keyed by path+mtime like info_cache) makes it a one-time cost per video; bucket by duration first to keep the comparison sub-quadratic.

3.8 Plugin / scripting hook

Lua or WASM-based hooks that run on download events: pre-download filename rewriter, post-download archive uploader, custom metadata enricher. Inverts the "we hardcode everything" model.

Phase 4 — Stretch / blue-sky

Probably never, or much later.

• A web UI built around a "TV mode" remote-friendly layout.
• AI summarisation of videos (transcript → bullet points).
• Multi-user accounts with per-user watched/positions (currently single-user).
• Integration with Plex / Jellyfin / Kodi as a source plugin rather than a symlink generator.

Recently shipped (highlights)

Roughly reverse-chronological. Items that closed out a roadmap line.

• Hang watchdog + poison-recover locks (2.5) — SIGKILL a yt-dlp/ffmpeg job silent for 5 min (classified retryable so it re-queues); recover poisoned WebState mutexes instead of cascading a panic into a dead server.
• Filter presets (1.3+) — save/apply/delete named chip-filter sets.
• Desktop UI scale — global egui zoom (whole UI, not just cards), Settings slider + Ctrl +/-/0, persisted.
• Format conversion (1.7) — post-download ffmpeg remux / H.264 / audio pass, global + per-channel, keep-original toggle.
• Anti-bot stack — POT token provider (bgutil-pot, version-matched plugin), nightly yt-dlp for working curl_cffi impersonation, dropped the captcha-prone forced player_client=web, auto-retry + adaptive throttle on rate-limit, configurable player clients (global + per-channel), cookie freshness / anonymous-jar warning.
• Subtitle controls — global [subtitles] config + per-channel overrides (download / auto / embed / convert-format / langs).
• N-level folder nesting (1.2+) — parent_id tree, recursive sidebar, move-folder-into-folder with cycle prevention.
• Per-distro packaging (1.8) — .deb / .rpm / AppImage via scripts/package.sh + Forgejo CI release artifacts.
• Per-channel / per-video notes (1.5) — searchable annotations.
• Library restore (2.4) — idempotent backup import.
• Error classification (2.3) — 9-class classifier + suggested fixes.
• Crash log + disk-full preflight (2.5) — panic→crash.log, statvfs guard before download.
• wgpu renderer — fixed NVIDIA+Wayland crash-on-maximize.
• Performance pass — info.json mtime cache, thumbnail worker pool, /api/library body cache, opt-level=3 + thin LTO.
• System tray (1.6) — ksni-based SNI tray, minimize-to-tray opt-in.
• Filter chips (1.3) — watch / date / size / has-subs / has-chapters, AND together, persisted to localStorage.
• Web downloads modal — bottom #jobs bar replaced with a ⬇ button in the header opening a full modal. d keyboard shortcut.
• Desktop screens refactor — Settings/Stats/Maintenance moved from floating windows to full CentralPanel views with vertical scroll.
• WebSocket job progress (3.3) — replaced HTTP polling.
• Mobile-responsive web UI — proper media queries at 640px / 380px.
• Library backup (2.4 — backup direction) — DB download from settings.
• Theme contrast fixes — every theme now passes per-state fg_stroke contrast checks.
• Shuffle play — random unwatched video on the desktop + web.
• Keyboard shortcuts — / r d ? in the web UI.
• Bulk tagging + channel-name search — multi-select + flag bulk-set.
• Channel folders + per-folder Check all (1.2) — one-level grouping.
• Per-channel download options (1.1) — JSON-blob overrides applied on scheduled re-checks.
• Per-video state flags + smart folders + comments capture (1.3/1.4) — favourite / bookmark / waiting / archive flags as smart-folder views; --write-comments with viewer tab.

How to read this

• Phase 1 (Tartube parity) is complete — kept above for the record.
• Phase 2 is down to test coverage (2.1) and a docs site (2.2).
• Phase 3 is the "surpass" work now that we're at parity.
• Phase 4 items might be valuable, but commit to nothing.

Items inside a phase are loosely ordered by user-visible impact, not strict prerequisite. With parity reached, the highest-leverage next moves are 3.1 (Windows/macOS binaries) for reach and 3.7 (perceptual-hash dedup) / 3.6 (comment-viewer) for features Tartube can't match.