Hello there, I’m using khadas Vim3 PRO and mipi camera OS08A10 8MP HDR Camera from your official store. I tried to run camera with simple command
cap = cv2.cv2.VideoCapture('/dev/video0', cv2.CAP_FFMPEG) I’m just getting infinite cycle (programm is running, but showing nothing):
My OpenCV version is 4.6 and it works perfect, because it reads photos and can connect to online stream:
MIPI camera plugged in correctly because this command shows me what she see (but then throws error in few seconds):
v4l2_test -c 1 -p 0 -F 0 -f 0 -D 0 -R 1 -r 2 -d 2 -N 1000 -n 800 -w 0 -e 1 -I 0 -b /dev/fb0 -v /dev/video0
The question - how can I capture a frame using my MIPI cam with OpenCV?
Hey, I already saw this topic, the app is working, but when I’m trying it with OpenCV, he just fails, he just stucks in the infinite loop after
cap = cv2.VideoCapture('/dev/video0')
If I’m putting 0 instead of /dev/video0 he just fails because he is receiving no frame.
(I tried it with OpenCV 4.2 and 4.6)
Do you have any suggestions?
Happy new year!
There is no need to make any changes to this part.
Here are some suggestions:
1.Use the latest firmware officially provided by khadas
2.Don’t miss every detail on the document
Had time today to do it, but it didn’t help
Do you have different suggestions?
Use the latest firmware
sudo apt install libopencv-dev python3-opencv
Demo Source Code
if __name__ == '__main__':
val = True
cap = cv2.VideoCapture(0)
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter("./test.avi", fourcc, 20.0, (640, 480), True)
while val is True:
ret, frame = cap.read()
if frame is None:
k = cv2.waitKey(1) & 0xFF
if k == 27:
Click to get the source file
Thanks! That worked for me
But I have a new question, why when I plug in the mipi cam, the board turns off?
Thanks! Can you pls read my last question?
A lack of power can cause such problems, please use a 24W power adapter.
Please don’t hotplug the MIPI camera, when you want to plug in/out the MIPI camera you need to power off the board first.
Also, as @ivan.li mentioned, you need to use our 24W PD adaptor to make sure the board has enough power.