VFW/ACM codec questions

I'm using VirtualDub and I would like to ask some things.

1) In the pack it say: XviD [version 1.3.3] but in the info inside the codec it say: xvidecore.dll version 1.4.-127 ("xvid-1.4.0-dev")
What version it really is?
What is the xvid build that you use?

2) There is a reason for not including the latest LAME version 3.99.5?

3) Is it possible to have 64-bit ffdhow VFW codec? Maybe in a separate pack if it cannot be included in the Mega pack?

Xvid is build from the latest source code. It is slightly newer than 1.3.3, but there have not any big changes.

As I recall that version of LAME either didn't work on XP or didn't work on older processors.

A 64-bit version of ffdshow VFW is actually included. However, it is not installed on Windows 8 or above, because it has compatibility issues that cause crashes.

1) Can you specify the real version in the setup instead of 1.3.3 please? It is just to know.
The "-127" in the version is a bug or they use version in this way?

2) I tried on Win XP and it works, maybe it doesn't work on processors without some instructions support but there can be a check in the setup to choose automatically the version to use?

3) Ah sorry, I was just see it missing in Windows 8 64-bit and thought it was removed on all OS.

The only correct version is 1.3.3. The 1.4.-127 version is just a bogus placeholder version they use during development. You should just ignore it.