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Thread Subject:
I want to split a video file into audio and images and reintegrate them back to form the same video file.

Subject: I want to split a video file into audio and images and reintegrate them back to form the same video file.

From: Govind Chowdhari

Date: 18 Jan, 2011 12:34:05

Message: 1 of 6

I want to make a video steganography project in matlab. Please help me out.

Subject: I want to split a video file into audio and images and reintegrate them back to form the same video file.

From: Steven_Lord

Date: 18 Jan, 2011 14:37:44

Message: 2 of 6



"Govind Chowdhari" <govindt2008@gmail.com> wrote in message
news:ih41bt$iap$1@fred.mathworks.com...
> I want to make a video steganography project in matlab.

\begin{CaptainPicard}
Make it so.
\end{CaptainPicard}

> Please help me out.

Certainly.

In general this newsgroup requires people posting homework questions (or
questions that sound like they're homework, even if they're not) to show
what they've done to try to solve the problem and to ask a SPECIFIC question
before the readers will offer any suggestions. Post the code you've written
to try to solve this problem and indicate where EXACTLY you're stuck and
someone may offer some assistance.

--
Steve Lord
slord@mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlab.wikia.com/wiki/FAQ
To contact Technical Support use the Contact Us link on
http://www.mathworks.com

Subject: I want to split a video file into audio and images and reintegrate them back to form the same video file.

From: Govind Chowdhari

Date: 23 Jan, 2011 06:46:03

Message: 3 of 6

a=mmreader('F:\X-Men\X-men.avi');
aviobj = avifile('F:\example.avi','compression','None');
outputFolder = fullfile('D:', 'g123');
for i=15000:1:15100
b=read(a,i);
aviobj=addframe(aviobj,b);
outputBaseFileName = sprintf('Frame %4.4d.jpg', i);
outputFullFileName = fullfile(outputFolder, outputBaseFileName);
% Write the image array to the output file.
imwrite(b, outputFullFileName, 'jpg');
end
aviobj=close(aviobj);


I have written this code. This code reads a video file and saves a particular range of frames from video in to a folder and also makes an .avi file of the extracted frames. The problem is that I am unable to retain the audio component. So I need help in audio section.

Subject: I want to split a video file into audio and images and reintegrate them back to form the same video file.

From: Govind Chowdhari

Date: 23 Jan, 2011 06:47:07

Message: 4 of 6

a=mmreader('F:\X-Men\X-men.avi');
aviobj = avifile('F:\example.avi','compression','None');
outputFolder = fullfile('D:', 'g123');
for i=15000:1:15100
b=read(a,i);
aviobj=addframe(aviobj,b);
outputBaseFileName = sprintf('Frame %4.4d.jpg', i);
outputFullFileName = fullfile(outputFolder, outputBaseFileName);
% Write the image array to the output file.
imwrite(b, outputFullFileName, 'jpg');
end
aviobj=close(aviobj);


I have written this code. This code reads a video file and saves a particular range of frames from video in to a folder and also makes an .avi file of the extracted frames. The problem is that I am unable to retain the audio component. So I need help in audio section.

Subject: I want to split a video file into audio and images and reintegrate them back to form the same video file.

From: Govind Chowdhari

Date: 23 Jan, 2011 06:48:04

Message: 5 of 6

a=mmreader('F:\X-Men\X-men.avi');
aviobj = avifile('F:\example.avi','compression','None');
outputFolder = fullfile('D:', 'g123');
for i=15000:1:15100
b=read(a,i);
aviobj=addframe(aviobj,b);
outputBaseFileName = sprintf('Frame %4.4d.jpg', i);
outputFullFileName = fullfile(outputFolder, outputBaseFileName);
% Write the image array to the output file.
imwrite(b, outputFullFileName, 'jpg');
end
aviobj=close(aviobj);


I have written this code. This code reads a video file and saves a particular range of frames from video in to a folder and also makes an .avi file of the extracted frames. The problem is that I am unable to retain the audio component. So I need help in audio section.

Subject: plz help me regarding voice activity detection

From: karoot RAZA

Date: 24 Feb, 2011 03:49:05

Message: 6 of 6

i m doing VAD based on zero crossing rate.i have studied papers and come to know that zero crossing rate threshold is


ZCRT=mean(noise)+5*standard deviation(noise)


how can i set value of detection?how can i implement ZCR in SIMULINK?
is there any other method?

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