To be used with BORIS your video must play well with VLC media player because BORIS used the VLC libraries (embedded).
If your video do not play with VLC, you can try to re-encode it.
You can use the embedded tool in BORIS. See Tools > Re-encode/resize video and the guide (http://boris.readthedocs.io/en/latest/#re-encoding-and-resizing-a-video-file)
If your video plays with VLC and not in BORIS you can contact me and send me your video.
No. For this feature you have to use a video tracking software like Ethovision XT (R) from Noldus.
It is a tribute to Boris Vian