Conversion from 2D images to video

Hi all. I want to convert 2D(x,y) images to video. Can anyone please help me out to solve this. I want a solution ASAP. Thank you.

Answer 1

[Walter Roberson]

Use the videowriter class. There are examples http://www.mathworks.com/help/matlab/ref/videowriter-class.html

[Zainb]

Thank you @Walter for your answer, I'm new to matlab almost, I'm just unable to use this class to write video in my case. I don't understand how to give frames to object. I'v a folder containing images , i want to writer video after reading these frames from this folder. Will you pleas help me out. Thanks again!

[Walter Roberson]

writerObj = videowriter('OutFile.avi');
writerObj.Framerate = 30;

fileinfo = dir('*.jpg');  %get list of files in current directory

for K = 1 : length(fileinfo)
  thisfilename = fileinfo(K).name;  %current file name
  thisimage = imread(thisfilename);  %read image from file
  writeVideo(writerObj, thisimage);  %a frame is an image
end

close(writerObj);

Note: if you named your files things like frame1.jpg, frame2.jpg, ... frame10.jpg, frame11.jpb, then you will encounter problems with this short code, as it will do them in the order frame1.jpg, frame10.jpg, frame11.jpg, frame2.jpg, .. frame9.jpg as that is the order that the names sort into. There are routines in the File Exchange that can understand "natural" order of files that should have been created with leading 0's in the name, frame0001.jpg, frame0002.jpg, frame0010.jpg and so on.

[Zainb]

Wow! it worked for me, Thank you a lot :)

Answer 2

[Image Analyst]

Attached is a demo. It extracts frames from a video to separate image files, then it reverses the process, going from separate image files to a video, basically using the process Walter showed.