> I have a 3 hour long VHS I need to convert / encode to a digital media
> format that can fit on a CD (so it can be distributed).

OK.

> Here is the catch: The format must be GPLed / Open Sourse.

I think you have asked this here before, didn't you?

Anyway, you're in a problem. Here's why:

You want to fit a 3 hours long VHS to 1 CD, that means a good (or should I say 
OVERKILL) compression. A 3 hour Video will not look so good under 650-700MB 
video (specially if you have lots of motion)..

As for GPL - forget it. Currently there aren't any GPL codecs which can do a 
good job. There is Theora but it's still in development stages, so you can't 
use it..

The closest one that you can use is XVID (xvid.org) which is a reverse 
engineering of DivX 3 + improvments. It's pretty good at this stage, but get 
this: XVid codec cannot officially be distributed in U.S or Japan. Why? good 
question (I guess due to copyrights, patents etc)..

If you'll use the freely MPEG-1 compression (MPEG-2 got tons of patents), then 
you'll need at least 3 CD's (if you go with VCD compression which is MPEG-1 
derivative). 

At the moment, the best ones (and heavily patented) are:

* Windows Media 9 (you can play it with mplayer or Xine with the win32 codecs)
* On 2's VP6 codec (same issues)
* RV40 (Real player's "Real One")

If anyone wants from you to codec something with GPL codec - ask him the codec 
name - I'll be happy to hear about it.

Thanks,
Hetz


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