Each bundled or linked component below remains governed by its own license; those entries satisfy the attribution and source-availability requirements those licenses place on us as a distributor. The service entries identify online providers named in our legal pages. The same catalogue is available in the app under Settings → About.
FFmpeg is bundled as a separate, independently executed program under the GPL-3.0-or-later license. Quven bundles a vanilla GPL build of FFmpeg. The complete corresponding source code is available under the same license at https://ffmpeg.org/download.html.
Bundled components
- AsyncImageLoader.Avalonia MIThttps://github.com/AvaloniaCommunity/AsyncImageLoader.Avalonia
- Avalonia MIThttps://avaloniaui.net/
- CliWrap MIThttps://github.com/Tyrrrz/CliWrap
- CommunityToolkit.Mvvm MIThttps://github.com/CommunityToolkit/dotnet
- Entity Framework Core MIThttps://github.com/dotnet/efcore
- F23.StringSimilarity MIThttps://github.com/feature23/StringSimilarity.NET
- FFmpeg GPL-3.0-or-laterhttps://ffmpeg.org/
- Leptonica BSD-2-Clausehttps://github.com/DanBloomberg/leptonica
Tesseract's bitmap-image dependency is bundled only with its BSD-2-Clause notice and a codec-capable, source-pinned per-RID payload.
- hls.js Apache-2.0https://github.com/video-dev/hls.js
The web and television clients play server HLS through hls.js where the browser has no native HLS support.
- Inter SIL Open Font License 1.1https://github.com/rsms/inter
- LibVLC LGPL-2.1-or-laterhttps://www.videolan.org/vlc/libvlc.html
Quven links LibVLC dynamically via LibVLCSharp.Avalonia. The bundled, unmodified LibVLC binary may be replaced by the user with a compatible version.
- LibVLCSharp.Avalonia LGPL-2.1-or-laterhttps://code.videolan.org/videolan/LibVLCSharp
- mpv (libmpv) LGPL-2.1-or-laterhttps://github.com/nickayl/mpv
The native mobile apps dynamically link an LGPL-clean libmpv build from a public fork; the complete corresponding source, including patches, is available at the linked repository.
- libplacebo LGPL-2.1-or-laterhttps://github.com/nickayl/libplacebo
GPU rendering library used by the mobile players, built from a public fork; the complete corresponding source is available at the linked repository.
- Lucide ISChttps://lucide.dev
Icon set bundled in the web client.
- Makaretu.Dns.Multicast.New MIThttps://github.com/iadepre/net-dns
- Mapperly Apache-2.0https://github.com/riok/mapperly
- Material.Icons.Avalonia MIThttps://github.com/SKProCH/Material.Icons.Avalonia
- Microsoft.Extensions.Http.Resilience MIThttps://github.com/dotnet/extensions
- PDFium Apache-2.0https://pdfium.googlesource.com/pdfium/
- Polly BSD-3-Clausehttps://github.com/App-vNext/Polly
- Preact MIThttps://preactjs.com
The television client is built on Preact.
- qrcode-generator MIThttps://github.com/kazuhikoarase/qrcode-generator
The television client draws pairing and hand-off codes with it.
- Quickenshtein MIThttps://github.com/Turnerj/Quickenshtein
- React MIThttps://react.dev/
The hosted web client is built on React and React DOM.
- React Router MIThttps://reactrouter.com/
Routing for the hosted web client.
- Roboto Apache-2.0https://github.com/googlefonts/roboto-2
Bundled in the mobile clients as the fallback subtitle font for libass because platform system fonts are not always reachable.
- Sentry SDK for JavaScript MIThttps://github.com/getsentry/sentry-javascript
The web client's diagnostics client, bundled and gated on current consent.
- SignalR JavaScript client MIThttps://github.com/dotnet/aspnetcore/tree/main/src/SignalR
Live server progress on the web client rides the SignalR JavaScript client.
- Serilog Apache-2.0https://serilog.net/
- OpenAI Whisper model MIThttps://github.com/openai/whisper
The multilingual small model is installed on demand from an immutable, checksum-verified Quven component and processes audio only on the self-hosted server.
- Silero VAD model MIThttps://github.com/snakers4/silero-vad
Local speech transcription bundles the source-pinned 6.2.0 model for voice activity segmentation.
- SkiaSharp MIThttps://github.com/mono/SkiaSharp
- SQLite Public Domainhttps://www.sqlite.org/copyright.html
- System.Reactive MIThttps://github.com/dotnet/reactive
- TanStack Query MIThttps://tanstack.com/query
Server-state caching in the web and television clients.
- Tesseract OCR Apache-2.0https://github.com/tesseract-ocr/tesseract
Bitmap subtitle OCR bundles source-pinned Tesseract only after the per-RID release gate passes.
- Tesseract tessdata_fast Apache-2.0https://github.com/tesseract-ocr/tessdata_fast
Bitmap subtitle OCR selects only the source-pinned eng, ita, fra, deu, spa, por, swe, rus, jpn and chi_sim traineddata files.
- TMDbLib MIThttps://github.com/jellyfin/TMDbLib
- whisper.cpp MIThttps://github.com/ggml-org/whisper.cpp
Local speech transcription bundles a source-pinned whisper-cli runtime for each supported server architecture, with Vulkan and Metal accelerated variants beside the AVX2 and baseline CPU builds.
Third-party online services
These services are contacted only when the related feature is configured, enabled or requested. Their availability is not guaranteed by us and each is governed by its own terms.
- Brevo Service APIhttps://www.brevo.com/
Quven uses Brevo for transactional account and support email while that provider is selected in production.
- AniDB Service APIhttps://anidb.net/
Anime catalogue search and detail lookups reach AniDB only through Quven's managed proxy; the server never contacts AniDB directly.
- Cloudflare Service APIhttps://www.cloudflare.com/
Quven uses Cloudflare for content delivery and protection, aggregate Web Analytics, managed TURN relay, DNS and inbound email routing.
- Configurable AI provider Service APIhttps://www.deepseek.com/
AI disambiguation uses Quven's managed service or operator-supplied credentials for an OpenAI-compatible provider; DeepSeek is the default provider.
- JustWatch Streaming availability data via TMDbhttps://www.justwatch.com/
Streaming availability data is licensed to TMDb by JustWatch and is shown for information only.
- OMDb Service APIhttps://www.omdbapi.com/
External rating lookups use Quven's managed service or operator-supplied OMDb credentials.
- OpenSubtitles Service APIhttps://www.opensubtitles.com/
User-initiated subtitle search and acquisition use Quven's managed service or operator-supplied OpenSubtitles credentials.
- Sentry Service APIhttps://sentry.io/
Diagnostics and crash reporting use Sentry; they are on by default with a one-click opt-out in settings.
- Stripe Service APIhttps://stripe.com/
Stripe processes payments only when paid plans begin.
- TMDb Service API (free, with attribution)https://www.themoviedb.org/
This product uses the TMDb API but is not endorsed or certified by TMDb.
- TVDB Service API (with attribution)https://www.thetvdb.com/
Metadata provided by TheTVDB; lookups reach it only through Quven's managed proxy, which holds the API key.
- Wikipedia and Wikidata CC BY-SA 4.0https://www.wikipedia.org/
An artist's biography is the introduction of its Wikipedia article, credited on the page; portraits are served by Wikimedia under each file's own licence. Both are reached only through Quven's managed proxy.
Quven's own source code is proprietary and provided under the End User License Agreement. See also our Terms & Conditions and Privacy Policy.