QtAV

QtAV is a multimedia playback library based on Qt and FFmpeg. It can help you to write a player with less effort than ever before.

QtAV has been added to FFmpeg projects page http://ffmpeg.org/projects.html

QtAV is free software licensed under the term of LGPL v2.1. The player example is licensed under GPL v3. If you use QtAV or its constituent libraries, you must adhere to the terms of the license in question.

Home page

Features

QtAV can meet your most demands

Hardware decoding suppprt: DXVA2, VAAPI, VDA/VideoToolbox, CedarX, CUDA(the 1st player support CUDA on linux?)
OpenGL and ES2 support for almost all formats including Hi10P videos (The 1st player/library support 10bit in ES2? VLC, XBMC, mplayer does not support now)
Real time preview
Video capture in rgb and yuv format
OSD and custom filters
Filters in libavfilter, for example stero3d, blur
Subtitle track select. Dynamic change FFmpeg and libass engine
Play frame by frame
Playback speed control
Variant streams: locale file, http, rtsp etc. and your custom streams
Audio channel, tracks and external audio tracks
Dynamically change render engine when playing.
Dynamically change video decoder
Multiple video outputs for 1 player
Video eq(software and OpenGL): brightness, contrast, saturation, hue
QML support. Most playback APIs are compatible with QtMultimedia module
Compatibility: QtAV can be built with both Qt4 and Qt5, FFmpeg(>=1.0) and Libav (>=9.0). Latest FFmpeg release is recommended.

Extensible Framework

Some components in QtAV are designed to be extensible. For example, you can write your decoder, audio output for particular platform. Here is a very good example to add cedar hardware accelerated decoder for A13-OLinuXino

For Developers

Requirements

The required development files to build QtAV can be found in sourceforge page: depends

Build

See the wiki Build QtAV and QtAV Build Configurations

How To Write a Player

Write a media player using QtAV is quite easy.

GLWidgetRenderer2 renderer;
renderer.show();
AVPlayer player;
player.setRenderer(&renderer);
player.play("test.avi");

For more detail to using QtAV, see the wiki Use QtAV In Your Project or examples.

QtAV can also be used in Qml

import QtQuick 2.0
import QtAV 1.6
Item {
    Video {
        id: video
        source: "test.mp4"
    }
    MouseArea {
        anchors.fill: parent
        onClicked: video.play()
    }
}

How To Contribute

Fork QtAV project on github and make a branch. Commit in that branch, and push, then create a pull request to be reviewed and merged.
Create an issue if you have any problem when using QtAV or you find a bug, etc.
What you can do: translation, write document, wiki, find or fix bugs, give your idea for this project etc.

Contributors

Wang Bin(Lucas Wang): creator, maintainer
Gianluigi Tiesi(sherpya): avdevice input support
Stefan Ladage: QIODevice support. Wiki about build QtAV for iOS. Let OpenAL work on OSX and iOS
Miroslav Bendik: Cedarv support. Better qmlvideofx appearance
theoribeiro: initial QML support
Vito Covito: interrupt callback
Alexander, Marius Wachtler, Petar Koretić, Sandro Cavazzoni(skaman), Dimitri E. Prado, karlox ...