Video steganography C#

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i write a video stegonagraphy program (LSB method)
but there is a problem like the original and embeded video size changed
how can i fixed it.
i work with avi files

What I have tried:

i want the video file not be changed after embed a string to video file

Posted 6-Nov-19 0:50am

Egemen Tekkanat

Updated 6-Nov-19 2:24am

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F-ES Sitecore 6-Nov-19 7:00am

You want us to help you fix code we can't see?

2 solutions

Solution 2

See CodeProject article: Steganography: Simple Implementation in C#[^]
This is only about pictures however, not video, the problem is that you can not use JPEG like in MJPEG video as this is a lossy format.

Here is a technical paper about video: Hiding Text in Video using LSB based Steganography[^]

Also see answers here: How do i...impement image steganography in C using LSB algorithm?[^]
It's not in C#, but you will get an idea how it works ... hopefully :)

Posted 6-Nov-19 2:25am

RickZeeland

Updated 6-Nov-19 2:33am

v3

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OriginalGriff · Accepted Answer · 2019-11-06T01:10:00

We can't help you: we have no idea what your code looks like, how you are "embedding the string", or anything else.

And do remember: AVI is not a video format: it's a video container format - itr can contain any one of many different types of video and audio stream, and embedding a string into those streams may well increase or decrease the size of the stream, and thus the file. Heck, just recoding the stream into a different video format can make significant changes to the quality, stream size, or even audio syncing.

The changes are that you can't "fix it" - stream size depends on compression method and parameters, and small changes in data can have large effects on compression output.