OpenCV: Detect face using Haar Cascades and record video at the same time

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As my title, can I detect face using Haar Cascades and record video at the same time?

I am using OpenCV to detect face by Haar Cascades, but I also want to record video during the detection process. Help me!

thank in advance!

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AlexSH On

You can use VideoWriter class to record the video. Here is the reference.