Extracting audio from videos can be interesting for computer users in several occasions. Be it extracting music from videos to be able to listen it in a music player or mp3 player or extracting audio from television interviews or movies to do the same. Quite a few free software programs are available that can extract audio from videos including the excellent Audacity but also Mediacoder or FLV Extract.
One of the most comfortable computer programs to extract audio from video files is X2X Free Audio Converter. It is possible to load multiple videos into the application and convert them in a batch process. Videos can be loaded from the build in file browser.
Many major video formats are supported by the audio extractor including avi, wmv, mov, mp4 or flv. The audio that gets extracted can be converted into various audio formats including mp3, ogg,wav, aac or wma.

The quality of the audio files can also be configured by the user from economy quality which uses a 64 Kbit to high quality encodings with 256 Kbit. A few advanced options are available that include trimming the video to extract only the audio from a specific part of it. The time it takes to extract the audio from the videos depends on the length and format of the videos.
X2X Free Audio Converter is definitely a pretty basic software program that does exactly what the user expects of it.
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Yamb does it too for the mp4 files – it’s possible to extract audio stream.
I prefer FLVextract or YAMB – for not re-encoding with lossy formats.
Most of my audio extraction is from .flv files for which I use AoA Audio Extractor
http://www.aoamedia.com/audioextractor.htm
or, in the event of the odd hiccup when it says it can’t load the file, I usually find that MediaCoder (audio edition) does the trick.
http://www.mediacoderhq.com/