Folders are real channels
Rename any channel with [NB] and it imports itself. Reinstall tomorrow, log in, everything's back, because your library was always Telegram.
Features
Everything a media library should have done years ago.
Built on your existing Telegram storage. Nothing to migrate, nothing to re-upload.
Watch
A seek engine, not a progress bar
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Keyframe indexes grow while you watchThe app maps time to bytes server-side as the file arrives
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VBR-aware seekingVariable-bitrate files land on the right frame, not the wrong scene
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Cue-less MKVs get bisectionNo seek index? NoBuf probes the file itself. Seconds instead of minute-long freezes
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Hover thumbnails everywhereFrame previews even over parts you haven't buffered
The seek bar tells the truth: buffered ranges, disk cache and thumbnail coverage are separate layers.
Plays everything. Smartly.
MP4, WebM, MKV and TS play by streaming, with no download-first wait. When your browser genuinely can't decode something, NoBuf detects it and remuxes or hardware-transcodes on the fly:
| Content | What happens |
|---|---|
| H.264 / VP9 / AAC | Streams directly |
| MKV, TS containers | Remuxed live. No re-encode, instant start |
| HEVC 8-bit (if your GPU plays it) | Copied stream, zero quality loss |
| HEVC 10/12-bit, HDR | Hardware transcode (Intel QSV when available) |
| Old MP4s (metadata at end) | Virtual faststart: plays instantly, downloads nothing extra |
Heavy HEVC tiers route through a transcode step, so they may take a moment to start. Honesty over marketing.
Subtitles, done properly
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Embedded tracks extract themselvesSRT, ASS/SSA (rendered with libass incl. bundled fonts), WebVTT, mov_text
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Extraction never interrupts playbackIt reads from what's already cached near your position
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Full styling controlsSize, position and sync nudges, remembered per file
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Built-in OpenSubtitles searchHash-matched even for nameless files; uses your own free API key
Image-based formats (PGS, VobSub, DVB) are detected but not supported yet; text formats only.
Dual-audio? Switch languages mid-scene.
Anime with Japanese and English tracks, films with director's commentary: pick another audio track and playback continues from the exact position. No reload, no lost seconds. Tracks are listed per file; unsupported ones are greyed out honestly.
Organize
A library, not a chat scrollback
Groups & public channels
Color-coded, drag-to-reorder folder groups. Paste any t.me link to browse a public channel as a searchable grid and forward files into your folders.
Get files in any way
Drag files or whole folders from Explorer, paste a direct URL and NoBuf fetches it, or browse zip archives and extract single entries without downloading them whole.
Find things instantly
Client-side search with debounce, sort by name/size/date, multi-select, virtualized grids that stay smooth past thousands of files.
Previews for everything
Images lazy-load real thumbnails; PDFs, audio and video open in dedicated viewers. Copy a t.me link from any file's context menu.
Your OS, your theme
Windows, macOS (Intel & Apple silicon), Linux. Seven built-in themes including full light mode, plus a custom theme editor.
Power
Scriptable down to the bytes
Local REST API (opt-in)
Enable it in Settings and point mpv, VLC, curl or your own scripts at your library. Binds to localhost only, authenticated with a generated key stored as a hash.
example
# list your library
curl http://127.0.0.1:8550/api/v1/files \
-H "X-API-Key: YOUR_KEY"
# stream any file with Range support
mpv http://127.0.0.1:8550/api/v1/files/42/download \
--header="X-API-Key: YOUR_KEY"
Endpoints: /api/v1/health · /files · /files/{id} · /files/{id}/download
Playback control
| Keys | Action |
|---|---|
| Space / K | Play / pause |
| ← → | Seek back / forward |
| J L | Seek back / forward |
| Shift+←/→ | Previous / next file |
| ↑ ↓ | Volume ±10% |
| , . | Speed −/+ 0.25× (0.25–4×) |
| < > | Halve / double speed |
| C | Toggle subtitles |
| M · F · Esc | Mute · fullscreen · close |
| Ctrl+F | Search the library |
Plus bandwidth limiters with presets, skip-step customization, PiP, loop, and every control-bar chip is draggable to where you want it.
Trust
Local-first architectureAll servers bind to 127.0.0.1; the UI sandbox allows only localhost. No accounts with us, no telemetry.
Signed updatesMinisign-verified releases, delivered via GitHub Releases.
Tested like it mattersOver a thousand automated frontend tests plus a Rust suite gate every change.