VideoReader - How to import video with audio

Question

Kai-Markus Mueller 2012-9-6

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/47550-videoreader-how-to-import-video-with-audio

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Dear all,

I need to load a .mp4 video into Matlab to process it frame by frame. The video contain audio as well.

To import the video into Matlab I am using:

xyloObj = VideoReader( MyVideo ); info = get(xyloObj);

info =

          Duration: 50.4746
              Name: 'SuperMarioTest.mp4'
              Path: 'C:\Users\programmer\Documents\MATLAB\'
               Tag: ''
              Type: 'VideoReader'
          UserData: []
      BitsPerPixel: 24
         FrameRate: 29.9700
            Height: 1080
    NumberOfFrames: 1514
       VideoFormat: 'RGB24'
             Width: 1920

Everything works fine and I am able to process the video frame by frame and save the output in another .mp4 file, but the output video has no audio!:

    mov.cdata = vidFrames(:,:,:,1);
    mov.colormap = [];
    OBJ.writeVideo(mov.cdata);

I have the following problem: I need the audio to be present in the output video (the same audio that is present in the input video).

How can I do that???

Thanks a lot for you help!

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Answer 1

Walter Roberson 2012-9-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/47550-videoreader-how-to-import-video-with-audio#answer_58117

Unfortunately, base MATLAB does not provide any routines for writing audio with video. I have not heard of any of the toolboxes providing routines for it, but I have not investigated that either.