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#1
October 21st, 2004, 04:11 PM
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| Convert mp4 to mp3 I am looking for a program to convert mp4's to mp3 via the command line. I can convert from m4p to mp4, with hymn, but I need to convert to mp3. This will be done from a shell script.  |
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#2
October 21st, 2004, 08:08 PM
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| Are you trying to convert true MP4 files, or AAC files?
__________________ Power Macintosh G4/500MHz "Yikes!" 10.4.11 Server • 1024MB • 3 x 120GB + 320GB • DVR-111D • 2 x Radeon 7000 PCI • 2 x 17" CRT MacBook 2.0GHz Core 2 Duo - White 10.5.4 • 2048MB • 80GB • CD-RW/DVD-ROM iPod Photo 60GB • iPod nano 1GB • AT&T DSL 6Mb/768k http://www.jeffhoppe.com |
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#4
October 22nd, 2004, 03:19 AM
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| Out of curiousity, why would you want to convert to mp3?
__________________ iMac G5 with iSight; 20"; 1.5GB RAM MacBook Pro 15" iPod Nano 1GB 3rd Generation 20gb iPod |
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#5
October 22nd, 2004, 05:36 AM
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| iTunes will covert AAC (which is m4a) to MP3. Just go to prefs->importing and set the encoder to mp3. Select the files in your library, then choose Advanced->Convert selection to mp3. You'll lose some quality but it will get the job done in one step without going via wav.
__________________ --MBP 15" C2D 2.33Ghz, 2GB RAM, 160GB HD, glossy, OS 10.4.8  --PowerBook 12" 867Mhz, 640mb ram, 40gb HD, Combi, OS 10.4.7, 19" Acer widescreen LCD --PowerMac G4 'Sawtooth' 400mhz 256mb RAM, 10gb HD, OS 10.3.9 --Mini-racked Lacie 80, 250 and 300GB Ext HDs, Lacie 16x DL DVD writer |
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#6
October 28th, 2004, 01:21 AM
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| This is all confusing. Piggybacking off of RBB's question, can I convert the protected files within iTunes to MP3. Why? because my car stereo will pplay mp3's and I paid for the song so I should be able to do it. If this can be done what do i use to do it? Thanks much
__________________ "A few guys with guns can ruin everything" -N Peart |
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#7
October 28th, 2004, 01:21 PM
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| Ok, found out how to do it. I want MP3's because the interface to my stereo uses only mp3's. First, hymn, http://hymn-project.org/ goes from m4p to m4a (mp4). faad, http://www.audiocoding.com/modules/mydownloads/, mp4 to wav lame, http://lame.sourceforge.net/, wav to mp3. |
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#8
October 28th, 2004, 03:41 PM
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| Hmm... well, if you've got a CD-RW handy, you can skip a step by burning the AAC files to a CD then re-ripping them as MP3. Might be a little slower though, but both ways degrade the sound quality. I guess the moral is that you can't get a protected M4P into an unprotected format without loss of quality.
__________________ Power Macintosh G4/500MHz "Yikes!" 10.4.11 Server • 1024MB • 3 x 120GB + 320GB • DVR-111D • 2 x Radeon 7000 PCI • 2 x 17" CRT MacBook 2.0GHz Core 2 Duo - White 10.5.4 • 2048MB • 80GB • CD-RW/DVD-ROM iPod Photo 60GB • iPod nano 1GB • AT&T DSL 6Mb/768k http://www.jeffhoppe.com |
