How do I read each frame of a video?

Question

L'O.G. 2023-5-3

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回答： Image Analyst 2023-5-4

For an .avi file, I can read in the file using video = VideoReader(filename) and then read the first frame using readFrame(video) which gives me an array of type uint8. How do I read aeach frame?

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Answer 1

Kevin Holly 2023-5-3

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在 MATLAB Online 中打开

You can use a while loop as shown in the documentation here.

Note, you can save a 3D/4D matrix of the video if memory permits by defining a variable as such:

ii = 1;
while hasFrame(vidObj)
    vidFrame(:,:,:,ii) = readFrame(vidObj); %vidFrame(:,:,:,ii) for color image and vidFrame(:,:,ii) for gray image
    ii = ii+1;
end