Low frames per seconds for USB camera with Jetson Xavier AGX

[a.elhanashi]

Hi

I am facing problem with using USB camera (See3CAM_CU135_CHL_TC) with Jetson Xavier AGX that i got low fps I run the following simple code but I got only 7.8 fps

import cv2
import time
print(cv2.version)
dispW=640
dispH=480
flip=2

cam=cv2.VideoCapture(0)
fps_start_time=0
fps=0
while True:
ret, frame = cam.read()
frame = cv2.resize(frame, (680, 480))
fps_end_time = time.time()
time_diff = fps_end_time - fps_start_time
fps = 1 / (time_diff)
fps_start_time = fps_end_time
fps_text = “FPS: {:.2F}”.format(fps)
cv2.putText(frame, fps_text, (5, 30), cv2.FONT_HERSHEY_COMPLEX, 1, (0, 255, 255), 1)
cv2.imshow(‘nanoCam’,frame)
if cv2.waitKey(1)==ord(‘q’):
break
cam.release()
cv2.destroyAllWindows()

I tried with other Thermal USB camera (BOSON Core 320) and I reached 60 fps with same Jetson xavier AGX and same code

I run this command while only (See3CAM_CU135_CHL_TC) camera connected to Jetson xavier AGX and i got the following

jetsonxavier@ubuntu:~$ v4l2-ctl -d0 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: ‘UYVY’
Name : UYVY 4:2:2
Size: Discrete 1280x720
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Size: Discrete 1920x1080
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Size: Discrete 3840x2160
Interval: Discrete 0.067s (15.000 fps)
Interval: Discrete 0.133s (7.500 fps)
Size: Discrete 4208x3120
Interval: Discrete 0.111s (9.000 fps)
Interval: Discrete 0.222s (4.500 fps)
Size: Discrete 4096x2160
Interval: Discrete 0.067s (15.000 fps)
Interval: Discrete 0.133s (7.500 fps)
Size: Discrete 640x480
Interval: Discrete 0.008s (120.000 fps)
Interval: Discrete 0.017s (60.000 fps)
Size: Discrete 1280x960
Interval: Discrete 0.017s (60.000 fps)
Interval: Discrete 0.033s (30.000 fps)
Size: Discrete 1920x1440
Interval: Discrete 0.022s (45.000 fps)
Interval: Discrete 0.044s (22.500 fps)
Size: Discrete 2880x2160
Interval: Discrete 0.050s (20.000 fps)
Interval: Discrete 0.100s (10.000 fps)

Index       : 1
Type        : Video Capture
Pixel Format: 'MJPG' (compressed)
Name        : Motion-JPEG
	Size: Discrete 1280x720
		Interval: Discrete 0.017s (60.000 fps)
	Size: Discrete 1920x1080
		Interval: Discrete 0.017s (60.000 fps)
	Size: Discrete 3840x2160
		Interval: Discrete 0.033s (30.000 fps)
	Size: Discrete 4208x3120
		Interval: Discrete 0.050s (20.000 fps)
	Size: Discrete 4096x2160
		Interval: Discrete 0.033s (30.000 fps)
	Size: Discrete 640x480
		Interval: Discrete 0.008s (120.000 fps)
	Size: Discrete 1280x960
		Interval: Discrete 0.017s (60.000 fps)
	Size: Discrete 1920x1440
		Interval: Discrete 0.017s (60.000 fps)
	Size: Discrete 2880x2160
		Interval: Discrete 0.033s (30.000 fps)

I tried two new (See3CAM_CU135_CHL_TC) but have same problem. I tested them on my laptop and can reach 30 fps so it is only happen in Jetson xavier AGX

I am using the following Libraries

Jetpack 4.6.2
Opencv 4.4.1
Python 3.6

This is to note that i flashed Jetson xavier AGX and I am thinking if i forget such support libraries to install

Looking for your support

[DaneLLL]

Hi,
Not sure if it help but please try to run gstreamer command cv2.VideoCapture(). Here is a sample for reference:
V4l2src using OpenCV Gstreamer is not working in Jetson Xavier NX - #3 by DaneLLL

And execute sudo nvpmodel -m 0 and sudo jetson_clocks. The two commands enable CPU/GPU cores at maximum clocks. You can check system loading by executing sudo tegrastats