cv2-enumerate-cameras 1.1.2

Enumerate / List / Find / Detect / Search index for opencv VideoCapture.

cv2_enumerate_cameras

Installation

Install from PyPI

pip install cv2_enumerate_cameras

Install from Source

pip install git+https://github.com/chinaheyu/cv2_enumerate_cameras.git

Example

Run as Script

python -m cv2_enumerate_cameras

Camera Info

The cv2_enumerate_cameras.enumerate_cameras() function will return a list of CameraInfo objects.

• CameraInfo.index: Camera index for creating cv2.VideoCapture
• CameraInfo.name: Camera name
• CameraInfo.path: Camera device path
• CameraInfo.vid: Vendor identifier
• CameraInfo.pid: Product identifier

Enumerate Cameras

import cv2
from src.cv2_enumerate_cameras import enumerate_cameras

for camera_info in enumerate_cameras(cv2.CAP_MSMF):
    print(f'{camera_info.index}: {camera_info.name}')

Output:

0: HD Webcam
...

Find Camera by Vendor and Product Identifier

import cv2
from src.cv2_enumerate_cameras import enumerate_cameras

def find_camera(vid, pid, apiPreference=cv2.CAP_MSMF):
    for i in enumerate_cameras(apiPreference):
        if i.vid == vid and i.pid == pid:
            return cv2.VideoCapture(i.index, apiPreference)
    return None

cap = find_camera(0x04F2, 0xB711)
while True:
    result, frame = cap.read()
    if not result:
        break
    cv2.imshow('frame', frame)
    if cv2.waitKey(1) == ord('q'):
        break

TODO

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