mencoder software package provides MPlayers Movie Encoder, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install mencoder
mencoder is installed in your system.
Make ensure the mencoder package were installed using the commands given below,
$ sudo dpkg-query -l | grep mencoder *
You will get with mencoder package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Graphics |
| Package | mencoder |
| Version | 2:1.1+dfsg1-0ubuntu3 |
| Description | MPlayers Movie Encoder |
| Sub Section | Graphics |