Having trouble reading and writing video files... any suggestions? Thank you!

Hello:

I am having trouble learning to read and write video files. It is a large file, so I have to do it frame by frame.

The code and results are below. As you can see the reader is created, and it displays, but I am doing something wrong in the writing step... "The file extension and the file format do not match". As you can see the Video Format is 'YUY2', so I am not setting something up right for this format, yes?

Any suggestions?

thank you

Tim ------------------------------------------------------------------------------

HERE IS THE CODE:

% Test File

% Initialize Video I/O
% Create objects for reading a video from a file, displaying the file,
%  and writing the video to a new file.

          % Create a video file reader.
          obj.reader = vision.VideoFileReader('Filename', 'RawVideo.5.11.15.AVI')
          obj.reader.info

          % Create a video player
          obj.videoPlayer = vision.VideoPlayer('Position', [20, 400, 700, 400])

          % Create a video writefile
          obj.videoFWriter = vision.VideoFileWriter('AnnotatedVideo.5.11.15.AVI', ...
              'FileFormat', 'AVI')

% Display and write the file
        %
        while ~isDone(obj.reader)
            % Read Frame
            frame = step(obj.reader);
            % Display Frame
            obj.videoPlayer.step(frame);
            % Write Frame
            step(obj.videoFWriter, frame);
  ---------------------------------------------------------------
Here are the results:
>> TestFile

obj = 

      reader: [1x1 vision.VideoFileReader]

ans = 

                 Audio: 1
                 Video: 1
       AudioSampleRate: 44100
          AudioNumBits: 16
      AudioNumChannels: 2
        VideoFrameRate: 25
             VideoSize: [1280 720]
           VideoFormat: 'YUY2'

obj = 

           reader: [1x1 vision.VideoFileReader]
      videoPlayer: [1x1 vision.VideoPlayer]

obj = 

            reader: [1x1 vision.VideoFileReader]
       videoPlayer: [1x1 vision.VideoPlayer]
      videoFWriter: [1x1 vision.VideoFileWriter]

Error using coder.internal.errorIf (line 9)
The file extension and the file format do not match.

Error in vision.VideoFileWriter/setParameters (line 283)

Error in TestFile (line 26)
            step(obj.videoFWriter, frame);

>>