How to add audio only to a video

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Radwa 2013-7-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/80841-how-to-add-audio-only-to-a-video

I am using Vision.VideoFileWriter to write a video I need to add video frame from a file and add audio frame from another file But I always get this error Reported by vision.VideoFileWriter: Not enough input arguments; expected 2 (in addition to the object handle), got 1.

My code is the following:

while ~isDone(videofile)  
      [videoFrame] = step(videofile);      
      step(noisevideofile,videoFrame)                 
  end
release(noisevideofile);
noisevideofile.AudioInputPort=true;
while ~isDone(noiseaudiofile)
      [audio] = step(noiseaudiofile);      
      step(noisevideofile,audio);
end
release(videofile);
release(noiseaudiofile);

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Kaustubha Govind 2013-7-2

Could you also paste the code that instantiates videofile, noisevideofile and noiseaudiofile. It is not clear what System objects you are using for each.

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