MPEG1 or MPEG4

Hi,

Which difference is between MPEG1 and MPEG4? Please you explain it to me in simple words.

There are underwater housing for one whichever camcorder MPEG4?

Thanks.

A compression expert named Phil Hodgetts told me just last week the differences between codecs. MPEG1=early 90s technology, bad, inefficient but widespread use due to the VCD era (like locusts, he said).

MPEG4= the current compression darling, in the 14th generation (at R&D level), named many different names, VC1 (HD DVD, Blue Ray) and AVCHD (Sony & Pana) for camcorders.

To confuse you more, MPEG2 is the current compression scheme for digibeta, HDV and DVDs.