Raw yuv420 output from motion extractor module is having horizontally layered bands on the frame.

[mohammedzakikochargi]

Describe the bug
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To Reproduce
Steps to reproduce the behavior:

1. Connect device - Any device
2. Add module - Motion extractor tests with openh264 as strategy selected in props.

Expected behavior
To get the yuv420 frame without any horizontal bands over it. Issue can resolved the in the openh264 class where the y, u and v channels are being added converted to cv image.

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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. chrome, safari]
• Cuda Version [e.g. 22]
• Architecture [e.g. x86_64, arm64]

Additional context
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[mohammedzakikochargi]

adityaB please take over this task.