Those are two libraries written by:

Adam Williams <broadcast@earthling.net>
Page: heroine.linuxbox.com

With a few changes by me (Matan Ziv-Av).

quicktime:
this is quicktime4linux-1.2 with dv support deleted, and makefile 
changed for:
* making shared library
* install target
* png support is now optional


libmpeg3:
This is libmpeg3 as in the xmovie-1.4 distribuition with a few bug 
fixes and some makefile changes:
* making shared library
* install target
* in libmpeg3.c:mpeg3_check_sig(), .mpeg is accepted as an mpeg file suffix
* in video/mmxtest.c:mpeg3_mmx_test(), proc file is closed before returning. 


