I use BlueJeans 2.5.2270 for videoconference on Windows 7 SP1 x64 Ultimate.
On https://adobe.bluejeans.com/videos/ I see:
Videos can be shared during a meeting
I assume they don't mean sharing one's screen and playing the video.
How can I share a video during a meeting in BlueJeans?
I don't see any obvious way to do so in the BlueJeans desktop client: