video frame saving in running loop

actualy i am readig a video and taking its frame one after another in loop, what i wanna know is that how i can use each frame inn imread command as that read from specific path

vidObj = VideoReader('ch.mp4');
i=1;
while hasFrame(vidObj)
    vidFrame = readFrame(vidObj);
    
    inframe = imread(''); 
    localcolor = [100 50 0]/255; 
    % convert to HSV
    hsvcolor = rgb2hsv(localcolor);
    hsvframe = rgb2hsv(inframe);
    % substitute HS
    hsvframe(:,:,1) = hsvcolor(1);
    hsvframe(:,:,2) = hsvcolor(2);
    % convert back to RGB
    outframe = hsv2rgb(hsvframe);
    imshow(outframe)
    
    
    pause(1/vidObj.FrameRate);
    i=i+1;
end

[Jan]

There is no need to call imread, because you do not want to imprt an image file. Therefore I'd simply omit this command and work with the alreayd imported frame.

Answer 1

[Image Analyst]

See attached demo. It runs through a video taking the mean R, G, and B values of the image and, optionally, writing each frame out to disk. Then it builds a new video by reading those frames on disk back in and constructing a new video from them.

[Image Analyst]

Here are some other video demos if you want.