Anyone do any video conversion here?

TMPGEnc Studio is great for windows but well im trying to forget windows. And i really dont want to use Wine.
http://www.pegasys-inc.com/en/index.html

Would like to no which programs that is about the same as TMPGEnc for linux.
or just a program that have two main features that I need which is:

Convert to DVD-Video [or Mpeg2] - aka DVD-VCD
DVD Author [make Dvd menu/ chapters]

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Knoppix is so cool