Revision history [back]

you can just use python's builtin time() function to do this, it's really trivial:

import cv2
import time

t0 = time.time() # start time in seconds

cap = cv2.VideoCapture(0)
while(True):
   ret, frame = cap.read()
   cv2.imshow('frame',frame)
   if cv2.waitKey(1) & 0xFF == ord('q'):
      break

   t1 = time.time() # current time
   num_seconds = t1 - t0
   if num_seconds > 30: # e.g. break after 30 seconds
      break

you can just use python's builtin time() function to do this, it's really trivial:

import cv2
import time

t0 = time.time() # start time in seconds

cap = cv2.VideoCapture(0)
while(True):
   ret, frame = cap.read()
  cv2.imshow('frame',frame)
## uncomment, if you *want* the preview
 if #cv2.imshow('frame',frame)
   #if cv2.waitKey(1) & 0xFF == ord('q'):
    #   break

   t1 = time.time() # current time
   num_seconds = t1 - t0
t0 # diff
   if num_seconds > 30:  # e.g. break after 30 seconds
      break

you can just use python's builtin time() function to do this, it's really trivial:

import cv2
import time

t0 = time.time() # start time in seconds

cap = cv2.VideoCapture(0)
while(True):
   ret, frame = cap.read()

   ## uncomment, if you *want* the preview
   #cv2.imshow('frame',frame)
   #if cv2.waitKey(1) & 0xFF == ord('q'):
   #   break

... processing or preview
   t1 = time.time() # current time
   num_seconds = t1 - t0 # diff
   if num_seconds > 30:  # e.g. break after 30 seconds
      break