 More details about Rududu Older versions of Rududu |
A wavelet video codec
Update (04/03/2008) : I'm rewriting rududu as an open source project. It's currently in alpha stage. See the new home page of the project. You're welcome to contribute to this new project.
Nicolas
Hello to all the visitors of this page,
Rududu is a codec (compressor-decompressor) for natural video content. The purpose of the video compression is to reduce the file size (or the bandwidth) of the video. So I hope Rududu will do this well.
To be short, the main difference between Rududu and a lot of codecs in use today is the transform used to compress still and moving image : MPEG, H26x and others (not all !) use a DCT (Discrete Cosine Transform) whereas Rududu uses a DWT (Discrete Wavelet Transform).
So why Rududu is using DWT ? To try it !!!
The DWT has proven to be better for compression of natural still images than the DCT, but there is not a big difference for video.
Rududu is in alpha stage, so if you don't know how to use a codec, don't use it ! But if you want to give it a try, you're welcome. Beware : because of it's development status Rududu contains bugs (I know some of them but not all) and might damage your datas (even though it has never damaged anything on my computer) and more important : the current stream version of Rududu will not be supported in the next versions, so don't use it to store your videos.
I plan to release a version 1.0 of the codec during this summer (2003) and the stream produced by this version will be supported in future versions.
Limitations of the codec :
- The dimensions of the video must be multiple of 8 in both directions, this limitation will not be removed.
- The codec only works on processors with MMX.
Interfaces of the codec :
- vfw (video for windows) in compressor and decompressor mode
- directshow in decompressor mode
You can download the latest version :
(189Ko,
updated
14/09/2003)For those who don't come from Doom9, here is a thread where you can discuss about Rududu.
Send me your remarks :
