frames per second changes

i have a code in which the frames per second changes and also the duration of video

clc
clear all
vidObj = VideoReader('foreman.avi');
Frames=vidObj;

numFrames = vidObj.NumberOfFrames;
pickind='bmp';
f1=fullfile('E:','rr1ames');
if (exist(f1) == 0)
    mkdir (f1);
end
for k = 1:numFrames
    a=read( Frames,k);
    strtemp=strcat('E:\rr1ames\',int2str(k),'.',pickind);
    imwrite(a,strtemp);
end
path ='E:\rr1ames\' ;
files = dir( [path '*.bmp'] );
pickind='bmp';

pickind='bmp';
writerObj = VideoWriter('rnewd2.avi');

open(writerObj)

for k = 1:numFrames
    image = ((imread(fullfile(path,files(k).name))));

      writeVideo(writerObj,image);
  end

close(writerObj);
vidObj = VideoReader('rnewd2.avi');

the result i get for foreman is

 Video Parameters: 14.99 frames per second, RGB24 176x144.
Duration-10.01

for rnewd2.avi is

 Video Parameters:  30 frames per second, RGB24 176x144.
Duration-5

plz help

[Walter Roberson]

merged to duplicate http://www.mathworks.co.uk/matlabcentral/answers/71614-error-while-writing-a-video

Answer 1

[Walter Roberson]

You did not configure a frame rate for writerObj, so it used its default frame rate.