Creating a video from a structure array field

I am trying to convert a structure array field (mov.cdata) into a video.

mov is a 1×600 struct with 2 fields (cdata and colormap). All of the values of cdata field are uint8 type and has a size of . To convert it into a video, I wrote following code snippet:

wm_video = VideoWriter('Watermarked_video_1.mp4', 'MPEG-4');

open(wm_video);
for m = 1:nFrames
    %img = readFrame(mov(m).cdata);
    writeVideo(wm_video, mov(m).cdata);
end
close(wm_video);

But I got the following error:

Error using VideoWriter/writeVideo (line 414)

Frames of type double must be in the range 0 to 1.

How can this error be solved?

Answer 1

[Kshitij Chhabra]

Hi,

From my understanding you are trying to convert a structure array field into a video using the "writeVideo" function. You need to normalise your mov(m).cdata to fit in the range of 0-1 as mentioned in the documentation.

To do the normalization, you can check a previously answered question the community here.

Hope this helps!

[Md. Al-Imran Abir]

Thanks @Kshitij Chhabra. I have understood solution of such errors. And sorry for being very late to accept the answer.