Unable to create camera on pi zero without gui

[Nathan Sinclair]

We're getting the following debug information when the camera doesn't display to screen.

veye/veye_raspcam/bin/veye_raspipreview -v -t -1 -p '0,0,1920,1080'
before create camera com time out -1

veye_raspipreview Camera App v0.3.7

Width 1920, Height 1080, filename (null)
Time delay -1, Timelapse 0
Link to latest frame enabled  no
Full resolution preview No
Capture method : Single capture

Preview Yes, Full screen No
Preview window 0,0,1920,1080
Opacity 255
Hardare version: 9000c1
before create camera com 
mmal: mmal_component_enable w 1920 h 1080 fps 30 

 raspipreview_create  com 

It doesn't do it all the time but it's come up often enough that it is a serious issue. We found if you restart the pi that it displays camera.

[veye_xumm]

@nathan-sinclair
We are very sorry that due to COVID-19, we have not been in regular office for some time recently.
Based on your description, I think it is most likely due to the lack of power supply capacity of the FFC cable of the pi ZERO. Please try it with a separate 5V power supply.
Looking forward to your results.