Flyleaf
Flyleaf provides a .NET media player library for WinUI 3, WPF, and WinForms, supporting audio, video, images, playlists, and protocols.
About Flyleaf
Flyleaf is an open-source .NET media player library for WinUI 3, WPF and WinForms, based on FFmpeg and DirectX. It plays audio, video, images and playlists over supported protocols; plugins such as YoutubeDL and TorrentBitSwarm extend format and protocol coverage, and custom I/O streams or plugins can handle non-standard sources. Playback controls include open, play, pause, stop, seek to time, frame or chapter, frame stepping, speed and reverse, along with video processing options such as deinterlacing, HDR handling, aspect ratio and filters.
For integration, Flyleaf provides FlyleafHost, a DPI-aware hardware-accelerated Direct3D surface that can be hosted as a normal control so developers can build their own overlay content above it. A WPF-only control set, FlyleafME, adds a bar, settings dialog and popup menu with style and template customization. WinForms support for the host control is partial. Releases are published on NuGet, compiled samples on GitHub releases, and documentation on the Wiki and the samples in the solution.
Key features
- Plays audio, video, images and playlists over supported protocols via FFmpeg
- Plugins extend coverage: YoutubeDL for web media, TorrentBitSwarm for torrents
- Accepts custom I/O streams and plugins for non-standard protocols and formats
- FlyleafHost Direct3D surface for hosting playback and building overlays
- WPF FlyleafME control with bar, settings dialog and popup menu
- Playback controls including seek to time, frame or chapter and frame stepping
Best for: .NET developers adding media playback and an embeddable video surface to WinUI 3, WPF or WinForms applications.
Good for
- Open source, with releases on NuGet and compiled samples on GitHub releases
- Supports custom I/O streams and plugins for non-standard protocols and formats
- Built for high resolutions such as 8K and HDR using FFmpeg and DirectX acceleration
Watch out for
- WinForms support for the FlyleafHost UI control is partial
- The FlyleafME control set with bar, settings and popup menu is WPF only
- Some video features are limited by processor choice, such as HDR formats on FlyleafVP or super resolution on D3D11VP
Flyleaf at a glance
- Website
- github.com/SuRGeoNix/Flyleaf
- Category
- Software & Utilities › Media Players & Servers
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Flyleaf FAQ
Which application frameworks does Flyleaf target?
It is a .NET media player library for WinUI 3, WPF and WinForms, based on FFmpeg and DirectX.
Where are Flyleaf releases and samples distributed?
Releases are on NuGet, compiled samples are on GitHub releases, and documentation is on the Wiki and in the samples included in the solution.
Can Flyleaf play web or torrent media that is not directly accessible over HTTP?
Yes, through plugins such as YoutubeDL for web media and TorrentBitSwarm for playing media from a torrent without fully downloading it.
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