1. Install guide for Ubuntu
2. x264 ffmpeg mapping and options guide
3. Basic ffmpeg usage
4. x264 settings
5. FFmpeg A/V manipulation guide at http://howto-pages.org/ffmpeg/
6. Correcting A/V sync with http://www.kkoncepts.net/node/69
UPDATE June 2013: This guide for Ubuntu 13.04 Raring Ringtail and Linux Mint 15 Olivia will provide a local install of the latest FFmpeg tools and libraries including several external encoding and decoding libraries (codecs). This will not provide a system installation and therefore will not interfere with anything such as repository packages.