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

MPEG Streamclip is a powerful free video converter, player, editor for Mac and Windows. It can play many movie files, not only MPEGs; it can convert MPEG files between muxed/demuxed formats for authoring; it can encode movies to many formats, including iP

The WebVideoFetcher is an application designed to allow users to convert and download nearly any audio or video URL from a range of sources, such as YouTube, Google, or Facebook. Visitors can simply drop the URL for the item in question into the handy form here and the application will take care of the rest. This version is compatible with all operating systems.

Online media converter.

CloudConvert supports the conversion between more than 100 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats. You can specify advanced options for every conversion type.

A website that can be used to convert one file type to another.