Gagazet's profile - activity

Cant capture and work with any vide Hello everyone. Have a huge problem here. After my long holidays found, that now any

Thank you. I spend around 4 hours, but found another way how to do it with correct borders! Anyway thank you. And i am not sure, that you can resize by your way from 1080 to the 480 properly~

At the head of question main idea. I am using Python 2.7, openCV for it. Finally, i have this code:

import cv2
vidcap = cv2.VideoCapture('myvid2.mp4')
success,image = vidcap.read()
count = 0;
print "I am in success"
while success:
  success,image = vidcap.read()
  resize = cv2.resize(image, (640, 480), interpolation = cv2.INTER_LINEAR) 
  cv2.imwrite("%03d.jpg" % count, resize)     
  if cv2.waitKey(10) == 27:                     
      break
  count += 1

We have video and cutting it on each frames, as a .jpg images. In the same time we making resize from any size to the 640x480. And all images has correct order of reading. There is no any problems with code and it work's well, but!...it doesn't save prev. image ratio. And this is big problem, because i am need in it.

For example how it look's like, resize from 1920x1080:

There is problem in ratio, as you can see. 1920x1080 16:9, but 640:480 4:3

And how it should be in my dream:

At first, thank you for your reading of it. I will be very glad if you can help to me solve this issue of my code~ Have a good day, my friend.

Hello guys. Studying openCV now, for part time job and met problem, with what i can't deal. This is simply code, as at tutorial, but i am trying to have at output black&white video. Problem in codec, i think, because i tryed to use really a lot of them - DIVX, MP4V, M4S2 and etc., at output i have 1 kb video file just with name. I am using windows, 3.5Python. With image all great~ Will be happy in help, i tryed google about this problem and all advices couldn't help me. Sorry for English, not a native speaker, but trying to do my best~

import numpy as np
import cv2

cap = cv2.VideoCapture('VideoEX.mp4')

fourcc = cv2.VideoWriter_fourcc(*"MP4V")
out = cv2.VideoWriter('output1.mp4', fourcc , 20.0, (640,480))

while(cap.isOpened()):
    ret, frame = cap.read()
    if ret == True:
       gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
       out.write(gray)

       cv2.imshow('frame',frame)
       if cv2.waitKey(1) & 0xFF == ord('q'):
           break
    else:
        break

cap.release()
out.release()
cv2.destroyAllWindows()