Qt-AV already can play rtmp and rtsp

[zhixuanli]

Hi Recently I found that the Qt-AV project can play urls like rtmp and rtst already. So may be it's not a wise action to continually develope the FQFLib project. Or may be you should make your advantage more distinct.

Here's an attempt to rebuild your simple example in Qt Creator. It can play the http url correctly, but failed to play rtmp. May be you can help me, thank you!