Video Stabilization of shaky video. Please help me solve the timing issues

Hi all,

I'm trying to stabilize a shaky video. Here is my code:

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filename = 'xyz.avi';
hVideoSrc = vision.VideoFileReader(filename, ...
                                      'ImageColorSpace', 'Intensity',...
                                      'VideoOutputDataType', 'single');

hVPlayer = vision.VideoPlayer;
imgB=step(hVideoSrc);

while ~isDone(hVideoSrc)

imgA=imgB;
imgB=step(hVideoSrc);
ptsIn=detectSURFFeatures(imgA);
ptsOut=detectSURFFeatures(imgB);
[featuresIn validPtsIn]=extractFeatures(imgA,ptsIn);
[featuresOut validPtsOut]=extractFeatures(imgB,ptsOut);
index_pairs=matchFeatures(featuresIn,featuresOut);
 matchedPtsIn=validPtsIn(index_pairs(:,1));
matchedPtsOut=validPtsOut(index_pairs(:,2));
gte=vision.GeometricTransformEstimator;
gte.Transform='Nonreflective similarity';
[tform inlierIdx]=step(gte,matchedPtsOut.Location,matchedPtsIn.Location);
agt=vision.GeometricTransformer;
imgB1=step(agt,imgB,tform);
step(hVPlayer,[imgB imgB1]);
end
release(hVideoSrc);
release(hVPlayer);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

the problem I'm facing is that original video and stabilized video are being run at lower framerate step(hVPlayer,[imgB imgB1]) so that i'm unable to notice any difference between original shaky video and stabilized video. howto make it faster.