What is QtAV?
QtAV is an open source multimedia framework built for the Qt framework. It provides a simple API and abstraction layer for developers to easily integrate audio and video playback along with basic editing and manipulation capabilities into Qt applications.
Key features of QtAV include:
- Hardware accelerated video decoding through FFmpeg and platform specific APIs like DirectX, CUDA etc.
- Audio playback and volume control
- Subtitle support with automatic loading from media files
- Video widget with customization options for aspect ratio, deinterlacing etc.
- Support for common formats like AVI, MKV, MP4, FLV etc.
- Frame-by-frame stepping and screenshot capturing
- Desktop capturing capabilities
- Effect filters for video like blur, color adjustment etc.
- Plugin system for adding new codecs without recompilation
QtAV makes it easy to build cross-platform media features into Qt-based C++ applications for desktops, mobile devices etc. It encapsulates low-level multimedia processing into an easy to use API. Useful for developers looking to add video/audio playback or basic editing features without delving into backend codec details.