How to save/write video ??

foregroundDetector = vision.ForegroundDetector('NumGaussians', 3, 'NumTrainingFrames',50);

blobAnalysis = vision.BlobAnalysis('BoundingBoxOutputPort',true,...
                                    'AreaOutputPort',false, 'CentroidOutputPort', false,...
                                    'MinimumBlobArea', 150);
                                videoFWriter = vision.VideoFileWriter('myFile.avi','FrameRate',...
    videoReader.info.VideoFrameRate)

videoReader = vision.VideoFileReader('hareket.avi');
fgPlayer = vision.VideoPlayer;
videoPlayer = vision.VideoPlayer;
while ~isDone(videoReader)
    videoFrame = step(videoReader);
%     figure,imshow(videoFrame);
    foreground = step(foregroundDetector,videoFrame);
    cleanForeground = imopen(foreground,strel('Disk',1));
    bbox = step(blobAnalysis, cleanForeground);
    result = insertShape(videoFrame, 'Rectangle', bbox, 'Color', 'green');
    numCars = size(bbox, 1);
    result = insertText(result, [10 10], numCars, 'BoxOpacity', 1, ...
        'FontSize', 14);
%     result = videoFrame;
      step(videoPlayer,result);
      a=step(videoPlayer,result);
      step(videoFWriter,a)
%     step(fgPlayer,cleanForeground);
end
    step(videoFWriter);

      release(videoPlayer);

ı want to save my new video with bounding box. I get an error on this line "a=step(videoPlayer,result);" and it's Error using vision.VideoPlayer/step _ Too many output arguments; 1 output(s) requested but only 0 output(s) available._

Answer 1

[Image Analyst]

You need to use VideoWriter, not vision.VideoPlayer. See attached demos.

[umut]

Sir i dont understand these demos. This my new video with bounding box. it play "step(videoPlayer,result);" with this.

how can i extract frames of this video. maybe this method can help me