videoplayer widget around mplayer's slave mode - QWidget based
https://github.com/goldenlederhosen/qt-mpwidget contains a new project, a fork of jgehring's qmpwidget. It is a Qt widget (QWidget based, not QML) which encapsulates mplayer using the slave mode. Some features have been removed, but a lot of reliability features added.
The code is pretty rough: it has been used extensively but only on my systems, integrated in my little home media app. I'd welcome feedback or patches on how to make it more portable.