since gstplayer has argument --audio to enable audio support but no
way to disable it, audio=False might a better choise.
If we left audio=True and incoming stream has video only, the whole
pipeline will be blocked and wait for audio stream.
Basic support for UIBC (single mouse events and key events)
- Option --uibc on miracle-sinkctl to enable it
- Option --log-journal-level to see player execution on journalctl
- Controller for uibc miracle-uibcctl
- Player based on PyGtk to receive and communicate mouse and keyevents
closes#57