Start video read from a particular frame

Question

I have obtained the frame_count of a saved video.

self.frame_count = self.capture.get(cv.CV_CAP_PROP_FRAME_COUNT) - 1

Now, I want to start a frame read from a particular frame_count. How do I do this?

Reason: I need to track an object and I have found the location of the object I want to track using HSV image segmentation. Now to track it, I intend to start the video from that particular frame and set the track window to the objects' coordinates.

Want: It should not be redundant and computationally intensive.

Answer 1

Try the following:

f = # put here the frame from which you want to start
self.capture.set(CV_CAP_PROP_POS_FRAMES, f)
while f < self.frame_count:
    retval, image = self.capture.read()
    f += 1