Hello Marina,
You could start by creating a startup Function where you create an array with all frames. Something like this:
function seleccionVideoButtonPushed(app, event)
%Select the video same way you are doing right now
video=VideoReader(foldervideo);
numFrames=video.NumberofFrames;
app.AllFrames=zeros(video.Height,video.Width,3,numFrames);
% This array will contain all the video frames
for a=1:numFrames
frame=read(video,a);
app.AllFrames(:,:,:,a)=frame;
end
end
Then you'll have to add a callback function when the slider is moved:
function SliderValueChanging(app, event)
changingValue = event.Value;
idx=floor(changingValue); % You may want to adjust this value based on the temporal resolution of your video
% The other option is to change the length of the slider to be
% the same as the number of frames.
imshow(app.AllFrames(:,:,:,idx),'Parent',app.UIAxes)
end
Hope this helps!
