How to specify the location to save video using VideoWriter?

Question

Mohana Singh 2019-4-22

0
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https://ww2.mathworks.cn/matlabcentral/answers/457844-how-to-specify-the-location-to-save-video-using-videowriter

回答： Walter Roberson 2019-4-22

I am creating video out of images and I am doing this in a loop for different folders with images. So i need to save the videos in their respective folders. Right now the following code saves the videos to the current working directory and so it keeps getting overwritten. So how do I specify the location to save the videos?

for folder = 1:4
    for loop = 1:numofimages
        images{loop} = imread(pngfile);
    end
    writerObj = VideoWriter('myVideo.avi');
    writerObj.FrameRate = 1;
    secsPerImage = 2.* ones(numofimages,1);
    open(writerObj);
    for u=1:numofimages
        frame = im2frame(images{u});
        for v=1:secsPerImage(u)
            writeVideo(writerObj, frame);
        end
    end
    close(writerObj);
end