Previous 1 2 Next 22 Replies Latest reply: Dec 9, 2010 7:21 PM by MichaelBradyNet
sdent Level 1 (5 points)
I was wondering if it is possible to change itunes' sole "on the fly" conversion setting from 128 to 320 AAC? I know it isn't available in the program interface, but perhaps a preference change via command line?

I have a 160GB ipod classic and over 200GB of lossless CDs in itunes. Two libraries won't work, because I track play counts, etc. (plus, it's simply a pain). And the same with dougscript's aac workflow script.

I can hear the difference every time between lossless and 320 aac in a double blind test, but the difference is extremely slight, and therefore I'm willing to have 320 on the ipod in order to fit all my CDs. 128 is too low though and very noticeable to me. Any ideas?

Intel Core Duo iMac 17", Mac OS X (10.4.8), 1.8GHz 1.5Gb RAM
  • AHXtreme42 Level 3 (540 points)
    As far as I know, you cannot change the rate at which the "on-the-fly" conversion is. I think it's locked at 128kbps AAC for the time being. Although, that certainly is a good idea! I purposely do not have that option checked because yeah I prefer my 320 or 256/256VBR over the 128 on my iPod. It's a good suggestion though and you could submit that to Apple if you like. Would be cool if implemented in a future version.

    I mean, you COULD still make a playlist of files to go on your iPod, convert them to 320 AAC manually, and then sync that playlist to your iPod. But that's a pain, and that would also leave duplicates in your Library, so it's not even worth it.
  • Neal Jackson Level 1 (75 points)
    I've posted a "Feedback" suggestion to Apple for precisely this feature. Though I did request on-the-fly conversion years ago and we've only just got 128K. You just have to keep hammering at that door until someone hears you. iTunes>Provide iTunes Feedback>Cross Fingers.
  • Meg St._Clair Level 9 (50,916 points)
    Converting from 128 to 320 would not get you any improved sound quality. Both .mp3 and .aac are lossy formats. When music is converted to those formats, information is removed. You can't add back information that isn't there. All you will be doing is making the file larger. If you want to convert your music to a higher bit rate, you'll need to rerip it from CDs at the higher bit rate.
  • Neal Jackson Level 1 (75 points)
    I think the posters were talking about an on-the-fly ability to convert from AIFF, Apple Lossless, etc., to a bit rate higher than 128K not converting from 128k to 320k etc. I, too, think 128k is an unacceptable bit rate. iTunes should be able to take a look at your library, the size of the storage space on your iPod (after a reformat) and suggest the best fit or offer a slider that you can adjust manually to set the bit rate that will allow you to transfer your library onto your iPod leaving some room for additional tracks.

    There's a programming opportunity for some developer to solve.
  • Mike Johnson12 Level 5 (6,480 points)
    From the iTunes prefs>General tab 'Import' settings - select the Import tab to get a dialog and you can change the settings.

  • Neal Jackson Level 1 (75 points)
    MJ what you are suggesting doesn't work for transferring tracks from iTunes to an iPod. Apple have locked the bit rate at 128K...far too lossy.
  • Mike Johnson12 Level 5 (6,480 points)
    You will need to convert the track in iTunes first. Then create a PL of those converted tunes to be transferred to the iPod.

  • Brent M. Level 1 (0 points)
    MJ, the OP indicated that he was interested in changing settings for on-the-fly conversion. Understandably, he doesn't want to go through the hassle of manually converting his songs and having duplicates, not to mention creating playlists.
  • Mike Johnson12 Level 5 (6,480 points)
    Unless you know how to write iTunes code my suggestion is about as on the 'fly' as you can get.

  • Meg St._Clair Level 9 (50,916 points)
    You are most likely correct. Was not entirely compes mentis last night (10 mile race in the heat).
  • Neal Jackson Level 1 (75 points)
    That'll be compos mentis. You need to take a cold shower, mate.
  • Meg St._Clair Level 9 (50,916 points)
    The spell checker doesn't like Latin.
  • Michael Carnes Level 1 (20 points)
    I'd like to see two changes to this potentially useful on-the-fly conversion.
    1) Let the user specify the bit rate. I agree that 128K is too low.
    2) Give the user an option to avoid transcoding. In other words, if it's already AC3 or MP3, don't convert. In this case, only convert non-lossy formats.
  • Chris CA Level 9 (78,695 points)
    There are a zillion things iTunes could be programmed to do but the more complex it is, the harder it is to use, the more code there is, etc.
    I'd like to see two changes to this potentially useful on-the-fly conversion

    Send suggestions here ->
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