How do I save every nth Frame of a video and save these images to a folder of my choosing

I have a video:

'Abuse001_x264.mp4' 

I would like to extract every 10th frame from this video and save these as pictures in a folder called: Abuse_Images

How would I go about this?

[Jack Zimmerman]

  AbuseVid = VideoReader('Abuse047_x264.mp4')
  numFrames = AbuseVid.NumberOfFrames;
  n=numFrames;
    for i = 1:10:n
      frames = read(AbuseVid,i);
       imwrite(frames,['C:\Users\John\MATLAB\Abuse\Abuse_Images\' int2str(i) '_47', '.jpg']);
    end 

Answer 1

[Bjorn Gustavsson]

If you follow the steps from the help on VideoReader, it should be perfectly possible to replace the frame-by-frame

reading described there to reading of whatever frames you desire - something like:

readerobj = VideoReader('Abuse001_264.mpg', 'tag', 'myreader1');
frames = [1 7 11 13 17 23 29];
for i1 = 1:numel(frames)
  Frame = read(readerobj, frames(i1));
  outname = sprintf('Outname-%03d.png',i1)
  imwrite(Frame,outname)
end

I haven't tested this, but it should work, maybe you want to do more between extracting the frames and writnig them to file, but this should be a useful first step.

HTH