Generate a movie silently

Question

ConvexHull 2020-5-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/531908-generate-a-movie-silently

编辑： ConvexHull 2020-7-27

采纳的回答： Image Analyst

在 MATLAB Online 中打开

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!

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Ameer Hamza 2020-5-24

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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.