Restructure thread safe handling of video stream acquisition to increase stability

• Have now addressed all known sources of software crashes expect rare cases of a full frame buffer slowing down software to the point of it freezing. But you should not have full frame buffers when running experiments.
• You should be able to unplug and replug the coax cable and USB cable during streaming and recording without the software crashing. The software will reconnect once video stream is back and continue where it left off.