mpeg2video is usually used for DVD but you may also use mpeg1video for CIF resolutions.
* keyint: Used to set the GOP size. 18 ... r two formats, vbitrate should be set based on personal preference. For instance, if you insist on fitting 20 or so hours on a DVD, you could use vbitrate=400. The r... ates a stream that cannot be correctly decoded by some standalone DVD players.
==== 11.8.3.3. Exampl... ons ====
For higher quality encoding, you may also wish to add quality-enhancing options to lavcopts
