demo.py - assert due to missing video stream

[m3d]

reported error:
""" I have not managed to make it work with the video feed, so that I can capture images and video. Currently, when I run the demo.py which creates a panorama, the code asserts on the line "assert g_lastImage is not None", because the "g_lastImage" is empty."""

[m3d]

It looks like issue related to change of default behavior with video streaming:
ProductVersion 2.1.53
vs.
ProductVersion 1.0.80