Play stream(whatever ffmpeg can), based on qt-av Formats rtmp and http are supported.
You can directly use simpleplayer_sdk.exe in the executable-green-version folder. No need to compile the Qt-AV. It will open the HongKong live: rtmp://live.hkstv.hk.lxdns.com/live/hks.
It's an example in Qt-AV repository. You have to install QT and Qt-AV first.
If you want to set the url opened to yours, just change the string of playerwindow.cpp, line 69.