CODEWITHSUNDEEP
matlabvideo-processingyuv
mc8
mc8

Reputation: 315

Convert Matlab matrix into video file

How can I convert a matrix to a video file? Specifically in the yuv format. Or convert it to .avi first then going to yuv. Does anyone have codes for this? It was originally an .avi file then I extracted all the frames into an array or structure.

I found this on stack overflow and used it. I created a 4D structure in Matble [height width Y/U/V numberOfFrames]. I'm using qcif so it's size is [176 144 3 150] but the video created was erroneous. (all white) Should I convert it to RGB first?

Orig; % 3D matrix
X = permute(Orig,[1 2 4 3]); % 4D matrix
movie = immovie(X,map); % map is the colormap you want to use

implay(movie);

Also, in my program, the original YUV file was first converted to avi. So my structure of frames are from an avi file.

Upvotes: 0

Views: 3096

Answers (1)

Dan
Dan

Reputation: 45752

I think it should be something like this:

aviobj = avifile('example.avi','compression','None');

for frame = 1:size(M, 4)
    aviobj = addframe(aviobj, M(:,:,:,frame); %// This is assuming your image is a vector of RGB images. If it's a vector of indexed images then drop one : and make the loop go to size(M,3)
end

aviobj = close(aviobj);

Upvotes: 1

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