converting to AAC Q's

Discussion in 'iPod' started by fadetoblack86, Jan 31, 2006.

  1. fadetoblack86 macrumors newbie

    Joined:
    Jan 30, 2006
    #1
    how should i convert my mp3s/cds? 320kbps? or 128kbps? is there any good medium kbps that don't take up as much room... and is there that big of a difference between 128 and 160? is 320 worth the quality and space it takes up? does the ipod playback only a certain kbps?
    EDIT: i'm pretty much getting ready for an ipod.

    thanks, fadetoblack86
     
  2. Mitthrawnuruodo Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #2
    Welcome to the forums. If you search/browse a bit you'll find lots of threads on different views on bitrates.

    Now, if space is an issue, like it is for me, then stick to aac@128. The quality is more than good enough for most purposes. I play my music over AirTunes to my ONKYO amplifier at home and use a nice pair of KOSS sportapro with my iPod mini, and the quality is more than good enough.

    I've also converted a lot of old mp3s I had on different bitrates, from 160-320 to aac@96vbr, to save space on my iBook, and I really cannot hear any difference on the mp3@320 and aac@96vbr, but that's just me... ;)

    Of course some people might tell you that anything below apple lossless, aac@320, aac@192, etc is useless, but I just think that if aac@128 is good enough for iTMS, then it's good enough for me... :)
     
  3. fadetoblack86 thread starter macrumors newbie

    Joined:
    Jan 30, 2006
  4. NicP macrumors 6502

    Joined:
    Jun 14, 2005
    #4
    dont convert your mp3s, leave them as they are
     
  5. DeSnousa macrumors 68000

    DeSnousa

    Joined:
    Jan 20, 2005
    Location:
    Brisbane, Australia
    #5
    Really? I converted some 192kbps mp3 into 128kbps acc and did not notice a difference in quality. It just depends on what your listening is like, I guess.
     
  6. KKKL macrumors 6502

    Joined:
    May 16, 2005
    Location:
    Amoy
  7. NicP macrumors 6502

    Joined:
    Jun 14, 2005
    #7
    AAC and MP3 compress music by discarding different bits of data. So converting to mp3 then to aac is going to reduce the quality more than converting directly to aac. Running something through several lossy encoders is never a good idea!

    Have you ever tried comparing the original to your encoded file side by side? on a decent stereo i'm betting youd tell the differance!
     
  8. Mitthrawnuruodo Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #8
    I have a decent stereo, and the difference is negligible... ie. I don't hear any noticeable difference from the original mp3@320 or mp3@160 and the re-encoded aac@96vbr.

    You might, but most people wont...
     
  9. mopppish macrumors 6502

    Joined:
    Nov 27, 2005
    #9
    I would without a doubt recommend 192 AAC for all future ripping. It's enough of a jump above 128 to improve the quality in a noticable way (maybe you don't notice now, but you will someday... ;) ) but still very conservative for the hard drive. On a decent stereo or even decent headphones, I can definitely tell the difference between 128 and 192, but not really between 192 and 320 (which I encoded at). I wish I would have just done 192 to begin with.
    Keep in mind that you may have this collection for a while, so any future upgrades in listening equipment or maturing ears may reveal artifacts that you don't hear now. The difference between 128 and 192 space-wise is negligible, but take it from someone that uses their ears professionally- the difference in sound IS there.
    Also, AAC is more efficient than mp3, so you get better sound for less space.
     
  10. betbest1 macrumors regular

    Joined:
    Oct 30, 2005
    Location:
    /dev/null
    #10
    I assume you mean 192 VBR?
     
  11. NicP macrumors 6502

    Joined:
    Jun 14, 2005
    #11

    isnt all AAC VBR?
     
  12. betbest1 macrumors regular

    Joined:
    Oct 30, 2005
    Location:
    /dev/null
    #12
    Apparently not, since there is an option in Preferences > Advanced > Importing, if you select AAC and choose Custom, to enable/disable VBR.
     
  13. CubaTBird macrumors 68020

    Joined:
    Apr 18, 2004
    #13
    what about mp3 vbr set at 160 kbps? i remember vbr being a format that allows itself to either increase or decrease quality based on the sounds in the song.. thats what patrick norton said from tss way back when iirc.
     

Share This Page