how to split channels of a video

how to split channels of a video for example in rgb, we show video in these channel r, g, and b separately? and show video in each channel individually.

Answer 1

[KSSV]

If you have a RGB frame F os size m*n*3...

R = F(:,:,1) ; 
G = F(:,:,2) ; 
B = F(:,:,3) ; 

[Awais Khan]

in below code which you commented in response of first question, please tell me how can i split hsv channel in to h, s, and v channels and show it video separately.

vidObj = VideoReader('C:\Users\Public\Videos\Sample Videos\Wildlife.wmv');  % video file 
%% Read the video frame by frame 
numFrames = 0;
iwant = cell([],1) ; 
while hasFrame(vidObj)
    F = readFrame(vidObj);    
    numFrames = numFrames + 1;   
    imagesc(F)
    drawnow
    iwant{numFrames} = F ;
end
%% Write to video
v = VideoWriter('myFile','Archival');
v.VideoCompressionMethod
open(v)
for i = 1:numFrames
    writeVideo(v,rgb2hsv(iwant{i}))
end
close(v)

[KSSV]

vidObj = VideoReader('C:\Users\Public\Videos\Sample Videos\Wildlife.wmv');  % video file 
%% Read the video frame by frame 
numFrames = 0;
iwant = cell([],1) ; 
while hasFrame(vidObj)
    F = readFrame(vidObj);    
    numFrames = numFrames + 1;   
    imagesc(F)
    drawnow
    iwant{numFrames} = F ;
end
%% Write to video
v = VideoWriter('myFile','Archival');
v.VideoCompressionMethod
open(v)
for i = 1:numFrames
    I = rgb2hsv(iwant{i}) ; 
    % Get h,s,v 
    h = I(:,:,1) ; 
    s = I(:,:,2) ; 
    v = I(:,:,3) ;
    
    writeVideo(v,I)
end
close(v)

[Awais Khan]

KSSV, above code show error at writeVideo(v,I), if i replace I with rgb2hsv(iwant{i}), code runs successfully but object of spliting channels are not achieved, so kindly review it if you have find an error.