--start option doesn't work

[guyarieli]

Pat hi,
Thank you for this great project!

Disclaimer: I'm new to the project

When using the --start option in my command and if the value after the --start is not 0 the speed index calculated will always be 0.
Following is the command line executed:
python visualmetrics.py --video /video.mp4 --start 100 --full

Following is the output:

frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.03 bitrate=N/A speed=0.435x
video:324kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
First Visual Change: 100
Last Visual Change: 100
Visually Complete: 100
Speed Index: 0
Visual Progress: 100=100%

I have tried it with multiple videos in different frame rates and sizes.

Is it a known issue?
Any other option to start the calculation from a different point in the video?
Thanks,
Guy