ffmpeg2theora software package provides Theora video encoder using ffmpeg, 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 ffmpeg2theora
ffmpeg2theora is installed in your system.
Make ensure the ffmpeg2theora package were installed using the commands given below,
$ sudo dpkg-query -l | grep ffmpeg2theora *
You will get with ffmpeg2theora package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Graphics |
| Package | ffmpeg2theora |
| Version | 0.29-2build1 |
| Description | Theora video encoder using ffmpeg |
| Sub Section | Graphics |