How to skip the no of frames in a video

Suppose i want to read only one of every 10 frames of a Video

[James Ang]

hi, does the answer really tell how to read every 10th frame of the video? as in frame 10,20,30,40...etc

[Walter Roberson]

You can loop passing in one frame index at a time to the read() method. Or you can fetch the estimate of the number of frames and calculate 10:10:NumbeOfFrames as the index for the read() method. Watch out for the fact that the number of frames is only an estimate.

Answer 1

[B.k Sumedha]

Use read option to read only particular frames.Remaining files will be discarded automatically.

    v = VideoReader('xylophone.mp4');

    %Read only the first video frame.

    video = read(v,1);

    %Read only the last video frame.

    video = read(v,Inf);

    %Read frames 5 through 10.

    video = read(v,[5 10]);

    %Read from the 50th frame to the end of the video file.

    video = read(v,[50 Inf]);

[Walter Roberson]

Using read() is no longer recommended for reading frames from VideoReader objects. The recommendation now is to use readFrame(), which can read one frame at a time. You can loop discarding frames if you want. See http://www.mathworks.com/help/matlab/import_export/read-video-files.html