How to convert struct to a video

Question

Peter 2016-11-26

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/314115-how-to-convert-struct-to-a-video

回答： Walter Roberson 2016-11-26

    v = VideoReader(path);
    vidHeight = v.Height;
    vidWidth = v.Width;
    mov=struct('cdata',zeros(vidHeight,vidWidth,3,'uint8'),'colormap',[]);
    numFrames = get(v,'NumberOfFrames');
     for k=1:numFrames
        mov(k).cdata = read(v,k);
     end

Then I will apply some change to the mov, but I cannot output a video using VideoWriter or VideoFileWriter, as it says something like the input does not correct

Is that mean I cant use any of them to convert a struct to a video? What else can I do? Thanks

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Answer 1

Walter Roberson 2016-11-26

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/314115-how-to-convert-struct-to-a-video#answer_244806

Videofilewriter step method only accepts individual image arrays (or y cr cb arrays).

Videowriter writeVideo method only accepts individual image arrays or individual frames compatible with movie structure (your mov is an array of those)

You will need to loop writing the contents of your mov structure array.