Hello there, I want to stream the object detection result frame using gstreamer in my Jetson Xavier, here’s my pipeline: capture frames from ip camera using opencv-python; √ do the image preprocesing and infence it with mxnet; √ draw the detected bbox on the origin frame; √ stream these frames via…

Your capture is not a gstreamer pipeline, opencv will try to decode itself, but using cpu only is not efficient. You would try: cap = cv2.VideoCapture("rtspsrc location=rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov ! application/x-rtp, media=video ! rtph264depay ! h264parse ! nv…

Thanks for your reply, my opencv is ver 4.1, gstreamer supported. Here’s my test code, gst pipeline copied from your code: import cv2 cap = cv2.VideoCapture("rtsp://admin:xxxx@10.168.1.248:554/h264/ch1/main/av_stream") out = cv2.VideoWriter("appsrc ! video/x-raw, format=BGR ! queue ! videoconver…

I’ll try the correct capture pipeline. May I ask how to learn gstreamer efficiently? Since these elements are magic to me, make me so confused when to use them.

You may find some overview looking at this , but you’ll probably learn by trying/correcting yourself (usually not harmful, but when saving to file with filesink, be aware that video may result in huge sizes thus better save to an external disk so that you won’t fill your rootfs). In short, a gstream…

How to stream frames using gstreamer, with opencv in python?

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

Honey_Patouceul April 25, 2020, 11:40am 2

You may have a look to this topic.
In recent versions of opencv, the API might have changed. Also have a look to this example.

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How to stream frames using gstreamer, with opencv in python?

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