MATLAB: Trouble creating AVI with 64-bit Windows

64-bitaviImage Processing Toolboxmovie2avivideo processing

Trying to create AVI movie with either movie2avi, addframe or VideoWriter, I get file, where all the frames are identical (i.e. the first one is reproduced). No error occurs. The problem is present only for PCs with 64-bit Windows – Windows-7 with Matlab 2013b and Windows-8 with Matlab 2010b. Movies are small (5-20 frames with resolution about 400×400 pix). An example from Help for movie2avi leads to the same result. Any known solutions?

Best Answer

I'm sure there is but we can't fix it until you upload your code. In the meantime, see my code, which works.

Related Solutions

MATLAB: I seem to be having an error using movie2avi (even using the example shown in Matlab Help) What could be the issue

Matt - the zooming in of the figure that occurs when you execute movie(mov) may be due to the fact that the figure that the movie is being played on has not been resized to the frame size. You could try

 [h,w,p] = size(mov(1).cdata);  % use 1st frame to get dimensions
 hf = figure; 
 % resize figure based on frame's w x h, and place at (150, 150)
 set(hf, 'position', [150 150 w h]);
 axis off
 movie(hf,mov,1,30,[0 0 0 0]);

to see if the above prevents the zooming.

As for only observing the first frame, I tried your code on a 32-bit R2014a version of MATLAB (Windows Vista), and I observed the same results. Even when I used the VideoWriter class to write the frames to file, all frames were identical to the first one (and had what appeared to be other artifacts from my desktop mixed in with the image).

A similar question was raised at stackoverflow: problems with movie file creation, and one solution was to change the figure renderer property to zbuffer (the default renderer is OpenGl for my PC). I added the middle line of code

 set(gcf,'position',[1 35 scrsz(3)/1.2 scrsz(4)/1.2],'color','white') 
 set(gcf,'renderer','zbuffer');         % <---- New line of code
 set(gca,'nextplot','replacechildren');

and created the avi. Both the movie(mov) and the avi worked - all frames were shown (none appeared to be identical). I tried this with your above code, and the VideoWriter alternative.

MATLAB: VideoReader won’t read videos created by VideoWriter

Yes, the problem turned out to be that I had the DivX codec pack installed on the computer with OS X Lion. When I uninstalled DivX, MATLAB was able to read these videos. The OS didn't actually matter.

Best Answer

Related Solutions

MATLAB: I seem to be having an error using movie2avi (even using the example shown in Matlab Help) What could be the issue

MATLAB: VideoReader won’t read videos created by VideoWriter

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