I want to break my video into frames.
I am using the following code:
import cv2
import numpy as np
import os
# Playing video from file:
cap = cv2.VideoCapture('myvideo.mp4')
cap.set(cv2.CAP_PROP_FPS, 5)
try:
if not os.path.exists('data'):
os.makedirs('data')
except OSError:
print ('Error: Creating directory of data')
currentFrame = 0
while(True):
# Capture frame-by-frame
ret, frame = cap.read()
# Saves image of the current frame in jpg file
name = './data/frame' + str(currentFrame) + '.jpg'
print ('Creating...' + name)
cv2.imwrite(name, frame)
# To stop duplicate images
currentFrame += 1
if not ret: break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()
I have set the FPS = 5 and 'myvideo.mp4' is 0:55 sec long. So, I'd expect to have 55*5 = 275 frames, but the code above gives me a lot more frames and it doesn't stop generating frames. Is something wrong in the code?
if you want a proper framerate you can do
framerate = vid.get(5)
instead of
cap.set(cv2.CAP_PROP_FPS, 5)
this will give you the exact framerate