1.4.1 Release Note

Changelog

• More QtMultimedia compatible QML playback API
• Debian package support. Now you can build on ubuntu>=14.04 using debuild
• Subtitle: libass renderering support. Dynamically change FFmpeg parser and libass
• Log level control support without changing any Qt logging functions (qDebug, qWarning etc.)
• Video orientation support in renderers
• Bug fix: video frame with alpha value. video stream start time >0. OpenAL can not close correctly.
• QML only: video preview.
• players: config UI in QMLPlayer. Video preview on progress bar.

Warning: QMLPlayer crashes frequently

QML API

QML API is plan to compatible with QtMultimedia module. Here is a list of unsupported API

• MediaPlayer: autoLoad, avaibility, bufferProgress, status.

Subtitle

libass is supported now. You can use subtitleFilter->setEngines(QStringList() << "LibASS" << "FFmpeg") to enable libass renderering if possible. In QML

Video {
    ...
    subtitle.engines: ["LibASS", "FFmpeg"]
}

It will take effect soon even if video is playing.

Debian

Requres Qt5. So ubuntu must be >=14.04.

git submodule update --init
debuild -us -uc -j4
sudo dpkg -i ../*qtav*.deb

Then you can run QtAV players and develop QtAV based applications.

Logging

Log message in QtAV is annoying sometimes. Now only debug build will enable logging. You can also enable/disable the logging using

QtAV::setLogLevel(leve);

You can also use environment var QTAV_LOG_LEVEL, value can be all, debug, warning, critical, fatal. If environment var is set, other setLogLevel() will be ignored.

Screenshort