MATLAB movie2avi cannot made video

Question

Kelvin 2015-10-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/251474-matlab-movie2avi-cannot-made-video

回答： Kelvin 2015-10-30

I am trying to test the function movie2avi using simple codes in R2014a as follows:

    clear; close all;
    figure;
    Z = peaks;
    surf(Z);
    axis tight manual;
    ax = gca;
    ax.NextPlot = 'replaceChildren';
    loops = 40;
    F(loops) = struct('cdata',[],'colormap',[]);
    for j = 1:loops
        X = sin(j*pi/10)*Z;
        surf(X,Z);
        drawnow;
        F(j) = getframe(gcf);
    end
    movie(F);
    movie2avi(F, 'myPeaks.avi', 'compression', 'None');

It seems the movie(F) works well but the avi file created contains the toolbar and background instead of just showing the graph. Also the avi file just show stationary picture as follow:

https://www.dropbox.com/s/otgnhc9ucfehqwk/a.png?dl=0

Another version of the program produce the same result: clc;clear; close all;

figure;

Z = peaks;

surf(Z);

axis tight manual;

ax = gca;

ax.NextPlot = 'replaceChildren';

v = VideoWriter('newfile2.avi','Uncompressed AVI');

open(v);

loops = 40;

F(loops) = struct('cdata',[],'colormap',[]);

for j = 1:loops

    X = sin(j*pi/10)*Z;
    surf(X,Z);
    drawnow;
    F = getframe(gcf);
    writeVideo(v,F);

end

close(v);

There is also a warning:

Warning: Struct field assignment overwrites a value with class "double". See MATLAB R14SP2 Release Notes, Assigning Nonstructure Variables As Structures Displays Warning, for details.

Please help. Thanks.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Kelvin 2015-10-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/251474-matlab-movie2avi-cannot-made-video#answer_197907

I added a command "set(gcf,'Renderer','zbuffer');" when I use R2014a and the problem is solved. It is just like using writeVideo in R2015a without that command. Thank you.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Walter Roberson 2015-10-28

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/251474-matlab-movie2avi-cannot-made-video#answer_197648

gcf is Get Current Figure. You are asking for the entire figure to be recorded, not just the plot, which would be gca

3 个评论
显示 1更早的评论隐藏 1更早的评论

Kelvin 2015-10-29

I also tried writeVideo as updated above but failed.

Kelvin 2015-10-30

Update: I added a command "set(gcf,'Renderer','zbuffer');" when I use R2014a and the problem is solved. It is just like using writeVideo in R2015a without that command. Thank you.

请先登录，再进行评论。