I want to decode, edit and encode an AVI file

[JasonBB]

Hello people,
I am developing a C# App to edit my AVI file. I want to decode, edit and encode it.
This is the process I would like:
1. load each frame from my AVI file into a bitmap.
2. modify the bitmap.
3. write the bitmap back into the file.
4. repeat for all frames
Is there a nice and simple way to do this?
Regards,
Jason

 

[cjard]

Yes, with ffmpeg

If you're going to make frames into bmp you're going to need a biiig hard drive

If you're doing something like watermarking the video or overlaying text, just ask ffmpeg to do it directly

 

[JasonBB]

thanks
I actually want to just read each frame of my AVI into a 'raw' format inside my App - then add some custom information which changes each frame.
I don't want to write the raw frame to a file - just edit it.
Then I want to write the modified frame back into my AVI file.

 

[cjard]

What information?

 

[JasonBB]

I want to change the color of about 100 pixels. The new colors will come from a txt file.
I have found an interesting website - www.aforgenet.com
This is a PNG of my error when I try to use that system.
This code is from the website - My only change is the filename:

My project starts from a video example in which the animation plays OK. So the file is OK. Just my new function causes an error.
Any idea what I'm doing wrong?
Thanks

 

[Skydiver]

I think that's a question for whomever the author of the AVIReader class is.

 

[cjard]

Did AForge come with any sample codes? It's been years since I used it..

 

[JasonBB]

yes lots of samples. The video player sample works well, so I'm adding my code to it. I just got the sample out of the ZIP again then added my really simple code.
Unfortunately I must have broken something else. Because now I get this error on the reader.Open command.

System.AccessViolationException: 'Attempted to read or write protected memory. This is often an indication that other memory is corrupt.'

 

[JasonBB]

Well, it seems that AForgeNet and OpenCV both do not support reading and writing sound data. I need audio capabilities for my project.
Does anyone know of anything that supports reading and writing AVI files with audio and video?

 

[Skydiver]

I have no idea how good or bad this code is:

A Simple C# Wrapper for the AviFile Library

Edit AVI files in .NET.

www.codeproject.com