IENetwork Error in store-traffic-monitor-python sample

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IENetwork Error in store-traffic-monitor-python sample

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Hello,

On executing the code by following the processing explained on the given link,

https://github.com/intel-iot-devkit/store-traffic-monitor-python

I am getting following error related to which I am not able to find any solution,

Reading IR...
./store-traffic-monitor.py:321: DeprecationWarning: from_ir() method of IENetwork is deprecated. Please use IENetwork class constructor to create valid IENetwork instance
net = IENetwork.from_ir(model=model_xml, weights=model_bin)
Loading IR to the plugin...
OpenCV: FFMPEG: tag 0x00000021/'!???' is not found (format 'mp4 / MP4 (MPEG-4 Part 14)')'
Could not open for writeVideo 0_inferred.mp4

Can anyone please help??

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