Online video to MP3 conversion tools are web-based services designed to easily convert any video file into an MP3 audio-only file format, without requiring you to register or to download or install any software.

Video to MP3 conversion tools generally provide the possibility of uploading your video files to be converted directly from your computer, or, in the case of video already published online, of pointing them by using their specific web address.

Some of these video to audio conversion tools also enable you to output your original selected video to a variety of other audio and video file formats. Conversion features and controls may include bitrate settings, max video file size, resolution and quality.

Here the two basic steps you need to take to convert your selected video clip into an .MP3 audio file:

1. Grab the video URL of the video you wish to convert, or upload it from your local hard drive
2. Click the convert button, and wait for your MP3 file to be processed and ready for download

If you are now convinced of the ease and effectiveness of these video to audio conversion tools, you may want to check this comparison table I have prepared where I have put side by side the differentiating characteristics of the video to audio conversion services I have found on the net.

• Max file size: Indicated in minutes or MegaBytes, the maximum dimensions of the video that will be converted
• YouTube only: Determines whether the service only supports YouTube or even other sharing services (Blip.tv, DailyMotion, Veoh...)
• Hard drive or direct URL upload: Gives you the possibility of uploading a video directly from your PC and/or by providing its direct URL
• Other available formats: Shows if other output formats, rather than MP3 only, are available

Here the comparison table and a full set of small reviews introducing the best video to audio conversion services available online:

Best Online Video To MP3 Conversion Tools and Services - Comparison Table

go to the table!

Online Video To MP3 Conversion Tool List

1. ConvertTube
   
   ConvertTube is an online video converter that you can use to download YouTube video clips in various formats. Without any registration, you just have to copy and paste the video URL, pick between the available formats (mpg, mov, 3gp, flv, mp4 or audio-only-mp3), click convert, and download the file. Completely web-based and free to use.
   http://converttube.com/








2. FLVtoMP3
   
   FLVtoMP3 is a free video conversion system that you can use to convert any FLV file to MP3 audio format. Just paste the URL of the video into the box, or upload it directly from your computer (up to 100MB), and click OK. After a matter of seconds, your new audio file will be ready for you to download. Free to use.
   http://www.flv2mp3.com/








3. Vixy
   
   Vixy is a free web video converter that lets you convert FLV videos to other formats. After you paste the URL of the video (be it YouTube URL or a link to the video file), all you need to do will be to select the output format among AVI, MOV, MP4, 3GP and MP3, click OK, and wait for the video to be converted. You can then download on your machine, without any registration. Free.
   http://www.vixy.net/








4. SoyBe
   
   SoyBe is a YouTube downloading service that lets you provide a URL and get the video converted in various video and audio formats. After you paste the URL, you can decide whether to convert the video in AVI, MOV, MP4, MPEG and MP3-audio-only format, and click the convert button to process and download your new file. Free to use.
   http://www.soybe.com/








5. ListenToYouTube
   
   ListenToYouTube is a free web application that you can use to extract an MP3 file from any YouTube video. To get your audio file, just grab the URL of the video you need, paste it into the box and click go. After a while, your MP3 will be ready for you to download. Free to use, no registration required.
   http://listentoyoutube.com/








6. MovietoMP3
   
   MovietoMP3 is an online service that enables you to get an MP3 file out of any video hosted on a sharing site. Supporting YouTube, MegaVideo, Dailymotion, Metacafe, Veoh, Myspace, Google Video, and more services, it easily lets you convert any video to an audio-only MP3 file, just by pasting its URL and clicking a button. MovietoMP3 is free to use and does not require any sign up procedure.
   http://movietomp3.com/








7. Media Converter
   
   Media Converter is a free file conversion system that you can use to convert any file to any format. You can use to convert videos from major sharing sites, URL, or even from your hard drive to any video/audio format (MP3, WMA, AVI, MOV, MP4) and more. It also lets you customize settings as codecs, quality, size, resolution and more. Free to use, no registration required for files up to 100MB.
   http://mediaconverter.org/








8. CatchVideo
   
   CatchVideo is a free service that anyone can use to download and convert YouTube videos. Just paste the URL of the video into the box, select the output format between mpg, mov, mp4, 3gp, flv, audio-only-Mp3 and wav, and click convert. The video will then be processed, and ready for you to download. Free to use, no registration needed.
   http://catchvideo.net/








9. Mux
   
   Mux is a free video conversion tool, that you can use to convert videos online. You can convert any video from video sharing sites like YouTube, or any video that has a public URL(Avi, Mov, Wmv, Mpg...), into other major formats. All you need to do is paste the URL, select the output format, and wait until your video is converted. Free to use, no registration needed.
   http://mux.am/

Originally written by Nico Canali De Rossi and Robin Good for Master New Media and first published on September 14th 2008 as "Convert Video To Audio: From Online Videos To MP3 - Sharewood Guide"