QtAV is a media playing library based on Qt and FFmpeg.
F: fullscreen on/off
T: stays on top on/off
N: show next frame. Continue the playing by pressing "Space"
O: open a file
M: mute on/off
Up: volume +
Down: volume -
->: seek forward
<-: seek backward
qmake -r "BUILD_DIR=/your/build/dir" [path/to/pro]
The binaries is in $BUILD_DIR/bin
NOTE: If you are using QtCreator to build the project, you should go to Projects->Build Steps->qmake->Additional arguments, add "BUILD_DIR=your/buid/dir"