OpenCV frame writing too slow

[DaneLLL]

Hi,
Please refer to

Save video with OpenCV and usb-webcamera

Hi, There is a sample of demonstrating cv2.VideoWriter(): https://forums.developer.nvidia.com/t/displaying-to-the-screen-with-opencv-and-gstreamer/140648/9 Please take a look.

There is discussion about running OpenCV on Jetson platforms:

[Gstreamer] nvvidconv, BGR as INPUT

Hi, It is limitation of hardware VIC engine. You have to use videoconvert plugin in the usecase. We have DS4.0.1 for deep learning usecases. You may also check it and may be able to apply to your usease.

So it takes certain CPU loading. For getting optimal performance of Jetson Nano, please execute sudo nvpmodel -m 0 and sudo jetson_clocks.