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frames per second changes

1 次查看（过去 30 天）
kash
kash 2013-4-12
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

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回答（1 个）

Walter Roberson
Walter Roberson 2013-4-12
You did not configure a frame rate for writerObj, so it used its default frame rate.

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