I, B & P frames

[Strobe]

Gday,
I'd like to think that I know a reasonable amount about VRD, but I don't understand I, B & P frames.
What are they, what is their significance and difference??

Thanks

[DanR]

Here's a link or 2 that might help.

http://www.tml.hut.fi/Opinnot/Tik-111.590/2002/chapter7.pdf

http://jehoo.netian.com/tech%20brief/brief%201/Tektronix/Mpeg-2/

[DanR]

Here's another link:

http://www.fh-friedberg.de/fachbereiche/e2/telekom-labor/zinke/mk/mpeg2beg/beginnzi.htm