In you intend to download video from video hosting and sharing sites such as YouTube, MySpace, Metacafe, iFilm and Google Video or flash video embedded on web page, and later transform or convert the FLV flash video clips into another video media format such as AVI, MPEG/MPG, 3GP and MOV, you can save the works by letting web based free online FLV Converter to convert the video clip automatically to selected file format, without the need to download or installing any third-party programs. Here is a list of free online FLV Converters for you.
Tips: If you want to convert DVDs and videos to play on almost any portable device like iPad, iPod, iPhone, etc., you can check the DVD Video Converter.
http://www.convertdirect.com/
This is a site to offer free online FLV Video Converter! It can directly convert online FLV/YouTube to AVI/MP3/WMV/3GP/MP4/iPod/Zune/PSP for video and music. You can use it to download FLV videos, or convert the online FLV to videos for your devices. It is easy to use, too. Submit the URL and choose to download or convert will be OK.
http://www.media-convert.com/
Media Convert is the Swiss Army Knife converter for online free media and file format conversion. It supports a lot of file formats from text documents, sound, audio, ringtones, images to videos. For purpose of this article, we will focus on its feature and ability to convert FLV file to another video format.

http://www.keepvid.com/
This online FLV Converter offers free and quick service to download streaming videos! Submit the URL and click "DOWNLOAD", then the site offers both the original FLV file and a MP4 file for you to download. You can back up the FLV on your computer and transfer the MP4 to your iPod, iPhone, PSP, cell phone, etc.
http://www.zamzar.com/
It's a site to offer free online file conversion! Zamzar supports conversion of files from links with URL and from your computer. Simply enter the URL of your file into the "URL box" will be OK. The supported file types are video (.mov, .avi, .mp4,.3gpp. 3gpp2, .wmv, .flv, .mpg, .ogg, etc.), audio (.mp3, .aac, .wav, .ac3, etc.), document (.doc, .txt, .html, .pcx, etc.), image (.bmp, .jpg, .jpeg, .gif, .tiff, etc.).
http://www.listentoyoutube.com/
ListenToYouTube.com is a free online application to convert YouTube videos and other Flash videos to MP3 for music! You do not have to download the YouTube video offline but submit the URL to the site, and it will extract the MP3 automatically. Then you can download the MP3 with the link it offers to you.
http://www.vixy.net/
This is a free site to help download the online videos directly to your PC/iPod/PSP! You can convert a Flash Video / FLV file to MPEG4 (AVI/MOV/MP4/MP3/3GP) file online. It is using a compressed domain transcoder technology enabling the FLV to MPEG4 conversion faster and less lossy than a typical transcoder.
http://online.movavi.com/
This is a free online service to convert videos between formats for your devices! The online FLV Converter supports to convert videos from both URL and computer hard drive. The output video/audio formats are various, including AVI, MPEG-4, MPEG-2, iPod video, iPhone video, PSP video, 3GP video, etc.
Best of all it offers batch conversion and fast speed! It supports to convert several files at a time, avoiding you do the same stupid thing repeatedly. The fast conversion speed of the online FLV Converter lets you enjoy the video fun on your device in no time.
Tips: If you want to convert DVDs and videos to play on almost any portable device like iPad, iPod, iPhone, etc., you can check the DVD Video Converter.
More Resources:
7 Free Tools for Ripping Your DVDs
How to make successful video conversion?
What is iPad Supported Video & Audio Formats?