Appending image frames to existing avi file

Can anyone suggest how to append frames to an existing video file? I tried the code below in a for loop, however what I get is it can only create a new file only from given frames and doesn't append to the existing file.

    outvid=VideoWriter([vidoutpath, name_vidout]);
    outvid.FrameRate=mov.FrameRate;
    open(outvid)
    for pgc=1:length(RGBbin(1,1,1,:))
        writeVideo(outvid, RGBbin(:,:,:,pgc));
    end
    close(outvid)

Thnx.

Answer 1

[JohnDylon]

I found a workaround. Since writeVideo can't append frames to a closed video file, (in my case) closing video in an appropriate step solves the problem. For example,

open(outvid);
for bin=1:n % An individual bin contains a number of frames say 1K
   start=some calculation;
   finish=some other calculation;

     for frame=start:finish
         writeVideo(outvid, framesource(frame));
     end
     % Video object is not closed here
 end
 close(outvid);

Thank for help.

JD

Answer 2

[Walter Roberson]

VideoWriter cannot append frames.

You might be able to edit the C++ code given in http://www.mathworks.com/matlabcentral/fileexchange/280-aviwrite . Or possibly you could make use of the 'Continue' and 'Initialized' options of https://www.mathworks.com/matlabcentral/fileexchange/15881-mmwrite