IINA
IINA is an open-source macOS media player that plays local files and many online streams with a native Mac-style interface.
What is IINA?
IINA is a third-party media player for macOS maintained by the IINA open-source project and originally created by Hechen Li. It is designed as a modern Mac-native front end built around the mpv playback engine, so users commonly install it to watch video, play audio, and open a wide range of media formats beyond what QuickTime supports by default. The app integrates with macOS features such as Picture-in-Picture, Touch Bar support on compatible Macs, media controls, and a dark-mode-friendly interface. It also supports subtitles, playlist playback, customizable controls, and an extension system for added functionality. Some users encounter it when looking for a lightweight alternative to VLC that feels more consistent with macOS design conventions. The bundle ID com.colliderli.iina is commonly associated with the standard IINA application installation and its preference and cache data.
Key features
- Plays many local video and audio formats through the mpv playback engine
- Supports Picture-in-Picture for watching video while using other apps
- Works with subtitles, including searching and loading online subtitles
- Provides playlist playback and thumbnail preview for easier navigation
- Includes customizable keyboard shortcuts, gestures, and interface options
- Integrates with macOS features such as dark mode, media controls, and Touch Bar
- Offers a plugin system for extending playback and interface behavior
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Safety overview
Status: Safe
IINA is generally considered safe when obtained from its official website or official project releases. It is a legitimate open-source media player, but like many media apps it may store preferences, playback history, and cached data in your user Library folders.
Recommendation: Keep it if you use IINA for video or audio playback. If you no longer use it, removing the app is usually optional, and any remaining support or cache files are typically only user data rather than system-critical components.
Common paths
/Applications/IINA.app
Cache paths
~/Library/Caches/com.colliderli.iina
Support paths
~/Library/Application Support/IINA
Preference paths
~/Library/Preferences/com.colliderli.iina.plist
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