How many frames is it when I call videoWriter.write?

edit

There 2 ways to do this:

[1] for i in range(100):
or 
 [2] time.sleep

Hi supra, thanks for your response, I know what you mean. I am capturing frame from a camera and save into .avi file. Input 100 fps when set fps as 10, what is the result? Will it save 10 fps? which 10 fps in input 100 fps will be saved?

OOppss! My mistaken...it is for i in range(10):

@supra56, careful, not every webcam supports this !

@jsplyy, if you write 100 frames per second, and had 10fps in your VideoWriter, the final video will be a 10x slower "timelapse" one. please understand, that there is no synchronization between the Capture and the Writer, and no frames will get dropped.

again, please don't abuse any of this, trying to make a video editor, there's better libs for that (e.g. ffmpeg, videolan, gstreamer)

I haven't test this. Still waiting make j1. for OpenCV 3.4.0

import cv2
cap = cv2.VideoCapture(0)
fps = 10
size = (int(cameraCapture.get(cv2.CAP_PROP_FRAME_WIDTH)),
       (int(cameraCapture.get(cv2.CAP_PROP_FRAME_HEIGHT)))
out = cv2.VideoWriter('MyOutputVid.avi', cv2.CV_FOURC(('M', 'J', 'P', 'G' '0'), fps,size)
success, frame = cap = read()
        numFrameRemaining = 10 * fps -1
        while success and numFrameRemaining > 0:
            out.write(frame)
:
:
:

Apologized, my mistaken. cv2.CV_FOURC(('M', 'J', 'P', 'G')