D&R glossary does not describe mp4 yet.
Other reason this page may be displayed: If a page was recently created here, it may not yet be visible because it has not yet been reviewed.
Browse D&R Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Main