MATLAB: Error in making video file

video writing

i have a code which is instructed in matlab itself for video writing. the code is as follows.
videoFReader = vision.VideoFileReader('C:\Users\NAVEEN\Desktop\samp.avi');
    videoFWriter = vision.VideoFileWriter('myFile.avi', ...
                         'FrameRate', videoFReader.info.VideoFrameRate);
    % write the first 50 frames of viplanedeparture.avi into myFile.avi
    for i=1:50
       videoFrame = step(videoFReader);
       step(videoFWriter, videoFrame);  % write video to myFile.avi

    end
    release(videoFReader); % close the input file
    release(videoFWriter); % close the output file
but when i run this code i am getting error
Error using VideoFileWriter/step
Could not start the filter graph : Access is denied.
Error in Untitled1 (line 7)
       step(videoFWriter, videoFrame);  % write video to myFile.avi
what is wrong with this code i am using r2013a matlab please help me… thank u in advance

Best Answer

I suspect you do not have permission to write 'myFile.avi' in whichever directory you happen to be in. Have you considered provided the entire path to be sure that it goes on to your desktop ?
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