I want to read every second frame from video

Hello, I have video which has 15 GB, so it takes to long to read it, I also need to add the segmentation to frames. So I decided to apply it only for every second or third frame. How I can do it?

Thank you for your answer.

Answer 1

[Image Analyst]

Yes, in the read() function just pass in the frame number you want to read.

numberOfFrames = videoReaderObject.NumFrames;
framesToRead = 1: 2 : numberOfFrames;
for k = 1 : length(framesToRead)
    % Extract the frame from the movie structure.
    thisFrame = read(videoReaderObject, framesToRead(k));
end

See attached demos.

[Eliska Paulikova]

Thank you so much