converting mp4 video file to audio only on Mac

Hi,
I have a mp4 video file around 45 mins. I want to just keep the audio so that the file size also goes down.
What are the free/paid/online softwares available for Mac. Most of the free tools i came across only allows for
conversion upto 3 mins.

Thanks
Rohit BajajAsked:
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brendanmeyerCommented:
http://ffmpegmac.net/

but it is a bit of work to install - see the 'how to page'

and it most likely is command line, but you can probably find a GUI front end for it
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strungCommented:
You can use VLC to extract the audio following the instructions here: http://www.makeuseof.com/tag/can-extract-audio-mp4-youtube-video/

Basically, open VLC, then choose Media > Convert/Save. Under the File tab, click Add then browse for the downloaded MP4 and choose Audio/MP3 as the save format.
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Michael-BestCommented:
Your iTunes can do it, If it is a video file in your iTunes library, then open the Advanced menu.
Select the Option key.
Convert to AAC, MP3 or Apple Lossless, depending on your requirements.
Select that then, iTunes will rip the audio from the video.
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MereteCommented:
Try youtube downloader includes a converter works in the free version as well the pro which I have,
http://www.ytddownloader.com/premium.php?ft=0
It should run on MAC as it states so in the search
http://www.ytddownloader.com/
Click on the download first and tick to automatically convert to mp3
then click on
 convert tab> then drag and drop your mp4 on and select convert to mp3
convert audio youtube downloader
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Michael-BestCommented:
You can rip audio from any movie with GarageBand on Mac.
If you do not already have GarageBand,  use this link:
http://www.apple.com/mac/garageband/

If you do not know how, then please watch this youtube:
"How to Rip the Audio from any Video Format (Mac OS X)"
Link:
https://www.youtube.com/watch?v=qBfqx2e2HnA
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