Category Archives: Python

This is the code we developed in Video Lesson #6 showing how to launch a webcam quicker and with less delay in OpenCV running on windows. The video above explains the code step by step, but for your convenience, I include the code below.

import cv2
print(cv2.__version__)
width=1280
height=720
cam=cv2.VideoCapture(1,cv2.CAP_DSHOW)
cam.set(cv2.CAP_PROP_FRAME_WIDTH, width)
cam.set(cv2.CAP_PROP_FRAME_HEIGHT,height)
cam.set(cv2.CAP_PROP_FPS, 30)
cam.set(cv2.CAP_PROP_FOURCC,cv2.VideoWriter_fourcc(*'MJPG'))
while True:
    ignore,  frame = cam.read()
    cv2.imshow('my WEBcam', frame)
    cv2.moveWindow('my WEBcam',0,0)
    if cv2.waitKey(1) & 0xff ==ord('q'):
        break
cam.release()

import cv2

print(cv2.__version__)

width=1280

height=720

cam=cv2.VideoCapture(1,cv2.CAP_DSHOW)

cam.set(cv2.CAP_PROP_FRAME_WIDTH, width)

cam.set(cv2.CAP_PROP_FRAME_HEIGHT,height)

cam.set(cv2.CAP_PROP_FPS, 30)

cam.set(cv2.CAP_PROP_FOURCC,cv2.VideoWriter_fourcc(*'MJPG'))

while True:

ignore, frame = cam.read()

cv2.imshow('my WEBcam', frame)

cv2.moveWindow('my WEBcam',0,0)

if cv2.waitKey(1) & 0xff ==ord('q'):

break

cam.release()

OpenCV, Python

Controlling a WEBcam in OpenCV on Windows

August 5, 2021 admin

In this lesson we show how to move a frame in OpenCV, how to convert a color image to grayscale, and then how to display multiple video windows. For your convenience, I include the code below that we develop in this video.

import cv2
print(cv2.__version__)
cam=cv2.VideoCapture(1)
while True:
    ignore,  frame = cam.read()
    gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    cv2.imshow('my WEBcam', frame)
    cv2.moveWindow('my WEBcam',0,0)
    cv2.imshow('my grayFrame', gray)
    cv2.moveWindow('my grayFrame',640,0)

    cv2.imshow('my WEBcam2', frame)
    cv2.moveWindow('my WEBcam2',640,480)
    cv2.imshow('my grayFrame2', gray)
    cv2.moveWindow('my grayFrame2',0,480)
    

    if cv2.waitKey(1) & 0xff ==ord('q'):
        break
cam.release()

import cv2

print(cv2.__version__)

cam=cv2.VideoCapture(1)

while True:

ignore, frame = cam.read()

gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)

cv2.imshow('my WEBcam', frame)

cv2.moveWindow('my WEBcam',0,0)

cv2.imshow('my grayFrame', gray)

cv2.moveWindow('my grayFrame',640,0)

cv2.imshow('my WEBcam2', frame)

cv2.moveWindow('my WEBcam2',640,480)

cv2.imshow('my grayFrame2', gray)

cv2.moveWindow('my grayFrame2',0,480)

if cv2.waitKey(1) & 0xff ==ord('q'):

break

cam.release()

Python

Launch a Windows WEB Camera in Ten Lines of Code with OpenCV

August 4, 2021 admin

In this lesson we show you step-by-step how to launch a WEB camera using OpenCV running on windows. In the video we show how to install OpenCV and how to write your first simple programs. Below is the code we developed in the video to launch the WEB cam.

import cv2
print(cv2.__version__)
cam=cv2.VideoCapture(1)
while True:
    ignore,  frame = cam.read()
    cv2.imshow('my WEBcam', frame)
    cv2.moveWindow('my WEBcam',0,0)
    if cv2.waitKey(1) & 0xff ==ord('q'):
        break
cam.release()

import cv2

print(cv2.__version__)

cam=cv2.VideoCapture(1)

while True:

ignore, frame = cam.read()

cv2.imshow('my WEBcam', frame)

cv2.moveWindow('my WEBcam',0,0)

if cv2.waitKey(1) & 0xff ==ord('q'):

break

cam.release()

Technology Tutorials

Category Archives: Python

Faster Launch of WEBcam and Smoother Video in OpenCV on Windows

Controlling a WEBcam in OpenCV on Windows

Launch a Windows WEB Camera in Ten Lines of Code with OpenCV

Making The World a Better Place One High Tech Project at a Time. Enjoy!