Videoina

An IINA-style video player for Windows and Linux, with a liquid-glass interface.

Download · Features · Shortcuts · Building · Contributing

$Videoina playing a colour-bar test video, with the frosted glass control bar blurring and refracting the video behind it$

IINA is a well-liked macOS video player, but it is written in Swift on AppKit and runs only on macOS. Videoina brings the same idea to Windows and Linux. It is a thin interface on top of mpv, so it plays nearly anything mpv can, and it uses IINA's keyboard shortcuts. The controls are drawn as "liquid glass": they blur and bend the live video behind them, with a light-catching rim.

Videoina is a separate project. It is not affiliated with IINA or Apple, and it shares no code with IINA apart from its key-binding file (see NOTICE).

Run it locally, step by step

Install CMake 3.21+, Ninja, Qt 6.5+ and libmpv. On Debian and Ubuntu:

sudo apt install cmake ninja-build libmpv-dev qt6-base-dev qt6-declarative-dev qt6-shadertools-dev

Windows steps are under Building.

Get the code:

git clone https://github.com/Gitguy268/videoina.git
cd videoina

Build it:

cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
cmake --build build

Play a video:
```
./build/videoina video.mkv
```

Download

Builds will be on the GitHub Releases page once the repository is public:

System	File	How to run
Windows 10/11 (x64)	`Videoina-win64.zip`	Unzip and run `videoina.exe`. The build is unsigned, so SmartScreen may ask you to confirm.
Linux (x86_64, glibc 2.35+)	`Videoina-x86_64.AppImage`	`chmod +x Videoina-x86_64.AppImage && ./Videoina-x86_64.AppImage`

Features


Plays what mpv plays	MKV, MP4, WebM, HEVC, AV1, ASS/SSA subtitles, multiple audio tracks, chapters
Liquid-glass controls	Floating control bar, playlist sidebar and menus blur and refract the video in real time (a GPU shader, not a static image)
IINA shortcuts	IINA's default bindings, with ⌘ mapped to Ctrl
Playlist	Drop several files at once, or open them with Ctrl+O. Click an entry to jump to it
Tracks	Subtitle and audio menus list every track, with language and codec
Quiet when watching	Controls and cursor hide after 2.5 s of no mouse movement, and stay visible while paused
Mouse	Double-click toggles fullscreen, scroll wheel changes volume

Videoina with no file open: a glass card saying drop a file here or press Ctrl+O, over a blue-to-peach gradient

Keyboard shortcuts

The most used ones. The full list is in config/input.conf (mpv input.conf syntax).

Key	Action
Space	Play / pause
← / →	Seek 5 s back / forward
Shift+PgUp / PgDn	Seek 10 min
↑ / ↓	Volume ±5
m or Ctrl+/	Mute
f, Enter / Esc	Fullscreen toggle, on / off
Ctrl+← / Ctrl+→	Previous / next in playlist
. / ,	Step one frame forward / back
Ctrl+[ / Ctrl+]	Half / double speed (Ctrl+\ resets)
v	Show / hide subtitles
Shift+Z / Shift+X	Subtitle delay −/+ 0.5 s
Ctrl+Shift+S / Ctrl+Shift+A	Next subtitle / audio track
Ctrl+s	Screenshot
Ctrl+O	Open files
q	Quit

Building

You need CMake 3.21+, Qt 6.5 or newer (Quick, Quick Controls 2, OpenGL, Shader Tools) and libmpv.

Linux

# Debian/Ubuntu; Qt 6.5+ from your distro or the Qt online installer
sudo apt install cmake ninja-build libmpv-dev qt6-base-dev qt6-declarative-dev qt6-shadertools-dev
cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
cmake --build build
./build/videoina video.mkv

Windows (MSVC)

Install Qt 6.8 for MSVC 2022 x64 with the Shader Tools module.
Download an mpv-dev-x86_64-*.7z from shinchiro/mpv-winbuild-cmake and unpack it to mpv\.
In a "x64 Native Tools" prompt, make an MSVC import library, then build:

"EXPORTS" | Out-File mpv\mpv.def -Encoding ascii
dumpbin /nologo /exports mpv\libmpv-2.dll | Select-String '\s(mpv_\w+)\s*$' |
  ForEach-Object { $_.Matches[0].Groups[1].Value } | Out-File mpv\mpv.def -Append -Encoding ascii
lib /nologo /def:mpv\mpv.def /name:libmpv-2.dll /out:mpv\mpv.lib /machine:x64
cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=C:\Qt\6.8.3\msvc2022_64 -DMPV_DIR=%CD%\mpv
cmake --build build
copy mpv\libmpv-2.dll build\

macOS (development only)

macOS users should use IINA. Videoina builds on macOS so it can be worked on there:

brew install qt mpv cmake
cmake -S . -B build -DCMAKE_PREFIX_PATH="$(brew --prefix qt)"
cmake --build build
./build/videoina.app/Contents/MacOS/videoina video.mkv

How it works

src/mpvitem.cpp: a Qt Quick item that drives libmpv through its OpenGL render API, so each video frame lands in Qt's scene graph instead of a separate native window. It mirrors mpv properties into QML, and passes key presses to mpv as keypress commands so that config/input.conf decides what they do.
qml/Glass.qml and shaders/glass.frag: each glass panel captures the part of the scene behind it at half resolution. The shader blurs it, bends it inward near the rounded edge (refraction), darkens it slightly so white icons stay readable, and adds a rim highlight. Because the video is part of the scene, the glass reacts to it frame by frame on every graphics backend.
qml/ControlBar.qml, qml/Playlist.qml, qml/Main.qml: the interface.
CI (.github/workflows/build.yml) builds on Windows and Linux, packages the zip and AppImage, plays a generated test video in each, and uploads a screenshot. Tagging v* publishes a release.

Limits

No plugins, picture-in-picture, online video (yt-dlp), seek-bar thumbnails or preferences window yet.
The glass effect covers Videoina's own controls. The window frame itself is not glass: there is no Mica or Acrylic on Windows, and desktop blur on Linux depends on the compositor.
Hardware decoding is requested (hwdec=auto-safe) but not yet tested on real Windows or Linux GPUs, and neither is HDR output. mpv falls back to software decoding when hardware decoding is unavailable.
CI tests every build headlessly with software OpenGL. It has not been tried by hand on Windows or Linux hardware yet.
No animated demo yet.
x86_64 only, and the builds are not code-signed.