i extracted frames from the video but the frames are not showing in full in the folder I saved them.

Question

Gabriel Mbokoma 2023-3-6

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https://ww2.mathworks.cn/matlabcentral/answers/1924130-i-extracted-frames-from-the-video-but-the-frames-are-not-showing-in-full-in-the-folder-i-saved-them

回答： Image Analyst 2023-3-7

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Walter Roberson 2023-3-7

How did you extract them? How did you display the extracted frame?

Gabriel Mbokoma 2023-3-7

wave_equation_2D.m

Here is my code:

clear

close all

set(groot,'defaulttextinterpreter','latex');

set(groot, 'defaultAxesTickLabelInterpreter','latex');

set(groot, 'defaultLegendInterpreter','latex');

fn='wave_equation_2D.h5'

pause on

pos = h5read(fn,'/pos');

for i=1:999

num = int2str(i);

eval(['E',num,'=','h5read(''',fn,''',','''/step',num,'/E''',');']);

end

for i=1 : 999

num = int2str(i);

var=eval(['E',num]);

plot3(pos(:,1),pos(:,2),var,'.-');

tri = delaunay(pos(:,1),pos(:,2));

plot(pos(:,1),pos(:,2),'.');

[r,c] = size(tri);

h = trisurf(tri,pos(:,1),pos(:,2),var);

axis vis3d;

caxis manual;

caxis([-0.3 0.3]);

axis equal

xlim([-1 1]);

ylim([-1 1]);

zlim([-0.4 0.4]);

axis on;

l = light('Position',[-20 -15 29]);

lighting phong

shading faceted

xlabel('$x$');

ylabel('$y$');

zlabel('$z$')

pause(0.001);

filename = ['image ' num];

print(filename,'-dpng');

end

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Answer 1

Image Analyst 2023-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/1924130-i-extracted-frames-from-the-video-but-the-frames-are-not-showing-in-full-in-the-folder-i-saved-them#answer_1186875

ExtractMovieFrames.m

If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

In the meantime, see how I did it in the attached demo.

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Answer 2

Image Analyst 2023-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/1924130-i-extracted-frames-from-the-video-but-the-frames-are-not-showing-in-full-in-the-folder-i-saved-them#answer_1187500

movie_made_from_surf.m

Try using getframe. See attached demo.

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i extracted frames from the video but the frames are not showing in full in the folder I saved them.

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