rburgett said:
Handbrake will do it as well.

http://handbrake.fr/

+1

Well I heard that itunes has this function as well (only heard, never practically operated!!!). It saided that when you put the video in iTunes and right click the video you put in the “video section", there should be an option “convert for ipod” or “convert to mp4” that can help you make it. You can try on this.
And if it didn’t work, I suggest you use [URL="http://www.levesoft.com/video-converter-ultimate.html"]Video Converter Ultimate[/URL], it’s easy and fast, for mac you can use Mac Total Media Converter.

Handbrake is free and does an excellent job. Its kind of confusing at first because you also have to have VLC installed.

Yep, I've used DVDFab for many years (as a way of making my old windows ME laptop region free) their current suite of program's seems to cover any eventuality.

Handbrake will do it as well.

http://handbrake.fr/

DVDFab. COnverts DVDs, files, etc.

Not free but a good product, multiple format support, frequent updates, great user forum.

I got lifetime keys a few years ago. I convert all my old DVDs to .mkv or .mp4 and have them on a HDD. You can convert any source to iPad, iPod, PS3, XBox, PSP, many more or do a custom conversion.

I use this little app for video conversion and so far I haven't found a format that it won't convert!
http://itunes.apple.com/us/app/smart-converter/id447513724?mt=12

-Andy

How do u usually convert video (like dvd, rmvb and even flv ) to the format that ipod supports? Any useful software to recommend?