How can i change the speed of the video???

I used R2013a version.

Can i change the speed of the Video??

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/videoreader.html

https://www.mathworks.com/help/matlab/ref/videowriter.html

Use VideoReader read() to read the frames. Use VideoWriter to write them out with a different frame rate.

Note that this would not be considered to be good enough for professional rate conversion between NTSC and PAL.

You should consider grabbing a program such as VLC which is pretty good for manipulating video, and is free.

Answer 2

[Van Thuan Hoang]

Hi,

You may play with this command: myVideo.FrameRate = 0.75;

For examples, to slowdown one video:

% MATLAB program to convert video into slow motion
clc;clear;close all;
  
 % load the video.
obj = VideoReader('C:/Users/Gfg/Desktop/Sample1280.avi');  
  
% Write in new variable
obj2= VideoWriter('xyz.avi');    
  
% decrease framerate 
obj2.FrameRate = 10;              
open(obj2);
  
% for reading frames one by one
while hasFrame(obj)              
    k = readFrame(obj); 
  
    % write the frames in obj2.         
    obj2.writeVideo(k);          
end
  
close(obj2);

Regards,

[Rik]

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