You can Convert many video format in other video format online. No software download! it's free.

MediaConverter.org
Do you want to convert files up to 1GB, unlimited conversions, support for more video portals, better video quality and a lot of other advantages?

Online-Convert.com
This free online file converter lets you convert media easy and fast from one format to another. No software installation needed. Convert media free, fast and online.

Zamzar.com
Zamzar is dedicated to helping you transform your songs, videos, images and documents into different formats.

CatchVideo.net
Download YouTube Videos.

Vixy.net
This service allows you convert a Flash Video / FLV file (YouTube's videos,etc) to MPEG4 (AVI/MOV/MP4/MP3/3GP) file online.