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hi I am new o opencv with python. I have installed python 2.4.1 and python 2.7 . i also make a short program that reads the avi file successfully. however it fails to read mp4 file. below is my program . will appreciate any suggestion. import cv2 import cv2.cv as cv c= cv2.VideoCapture("f:\aviwork\Example2.Mp4") print c.grab() // returns false. however returns true if use avi file.

cap = cv.CaptureFromFile("f:\aviwork\Example2.Mp4")

nframes=int(cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FRAME_COUNT)) fps= int(cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FPS)) print "total frame",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FRAME_COUNT) print "fps" ,fps print " currpos of videofile",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_MSEC) waitpermillisecond=int(1*1000/fps) print "waitpermillisecond",waitpermillisecond print cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FOURCC)

for f in xrange(nframes): frameimg=cv.QueryFrame(cap) print " currpos of videofile",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_MSEC) print " index of frame",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_FRAMES) cv.ShowImage("hcq",frameimg) cv.WaitKey(1)

cv.DestroyAllWindows("hcq")

hi I am new o opencv with python. I have installed python OpenCV 2.4.1 and python 2.7 . i I also make a short program that reads the avi file successfully. however However it fails to read mp4 file. below Below is my program . will Will appreciate any suggestion. suggestion.

import cv2
import cv2.cv as cv
c= cv2.VideoCapture("f:\aviwork\Example2.Mp4")
cv2.VideoCapture("f:\\aviwork\\Example2.Mp4")
print c.grab() // returns false. however returns true if use avi file.
file.
  
cap = cv.CaptureFromFile("f:\aviwork\Example2.Mp4")cv.CaptureFromFile("f:\\aviwork\\Example2.Mp4")
  
nframes=int(cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FRAME_COUNT))
fps= int(cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FPS))
print "total frame",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FRAME_COUNT)
print "fps" ,fps
print " currpos of videofile",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_MSEC)
waitpermillisecond=int(1*1000/fps)
print "waitpermillisecond",waitpermillisecond
print cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FOURCC)cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_FOURCC)
  
for f in xrange(nframes):
    frameimg=cv.QueryFrame(cap)
    print " currpos of videofile",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_MSEC)
    print " index of frame",cv.GetCaptureProperty(cap,cv.CV_CAP_PROP_POS_FRAMES)
    cv.ShowImage("hcq",frameimg)
    cv.WaitKey(1)cv.WaitKey(1)
  
cv.DestroyAllWindows("hcq")cv.DestroyAllWindows("hcq")