1. 
   MPEG4
   MPEG4 has a high compression ratio, which creates a small file size that's suitable for personal computer and Internet applications.
   Found op http://www.panasonic.co.uk/html/en_GB/Technology/0-9/217724/index.html
   
   
2. 
   MPEG4
   Moving Picture Experts Group Compression Standard Version 4. MPEG4 is a technology for compressing voice, video and related control data and is one of the MPEG international standards
   Found op http://www.amplicon.co.uk/info/glossary.cfm
   
   

Tip: double click on a word to show its meaning.