Generate a movie silently
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Dear all,
I am familiar with the standard procedure to create an animation/video in MATLAB with e.g.:
vidObj = VideoWriter('video.avi');
vidObj.FrameRate = 20;
vidObj.Quality = 100;
open(vidObj);
figure(Figure_Video)
currFrame=getframe(gcf);
writeVideo(vidObj,currFrame);
close(vidObj);
However, suppose if the creation of the animation takes few hours (one frame each minute) and i want to do some other work (writing texts, emails) with the same computer. Each minute MATLAB captures the display/mouse and makes it even unpossible to do some other work.
Therefore my question:
Is there an easy way to create an animation silently in the background?
Thank you!
6 个评论
Ameer Hamza
2020-5-24
Which command are you using which grab the mouse attention from other applications? Using the code in your question does not result in grabbing the mouse attention. For example, run the following code. You can continue to work on your other applications (at least this works in macOS)
v = VideoWriter('temp.mp4', 'MPEG-4');
open(v)
x = linspace(1,10);
y = sin(x);
fig = figure();
for i=1:numel(x)
plot(x(1:i), y(1:i));
currFrame = getframe(fig);
writeVideo(v, currFrame);
end
close(v);
Although you can avoid multiple calls to plot(), I just write it like this to show even this does not grab attention. You are probably writing so another command which grabs attention. My guess is that you have written the line
figure(Figure_Video)
inside the loop.
Image Analyst
2020-5-24
Also, switching to a particular axes will steal focus:
axes(handles.axesImage); % This call steals focus.
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