iPod observation

Discussion in 'General Mac Discussion' started by mc68k, Nov 12, 2002.

  1. mc68k macrumors 68000


    Apr 16, 2002
    i thought of this the other day-- while not new to many it is an interesting thought.

    my observation is the higher the bitrate of the songs the less your battery will last. This is due to 2 things:

    o longer hardrive spinup for larger files
    o processor/system will have to work harder to decode larger bitstream

    So keep this in mind when you rip songs from CD (or the alternative ;)).
  2. Sun Baked macrumors G5

    Sun Baked

    May 19, 2002
    Re: iPod observation

    Shouldn't that be more drive activity instead?
  3. mc68k thread starter macrumors 68000


    Apr 16, 2002
    Re: Re: iPod observation

    or both: spin up takes the most amps but I did forget access, thx
  4. King Cobra macrumors 603

    Mar 2, 2002
    This is why I almost always store songs on my iPod at MPEG 2 audio to save a huge loss in battery power.

    Encode the songs from a CD using the following custom import settings in iTunes:
    Mono: 32
    Stereo: 64
    Use highest VBR

    The rest of the settings are up to you. The result is a 4 minute song is encoded at MPEG 2 audio at a little more than 64Kbps and takes up 1.8 or 1.9MB of Hard Drive space. iTunes can read MPEG 2 audio, and so can your iPod. Basically, it sounds like MPEG 1 audio at 128Kbps (or higher), but takes up about half the space. This is how you can get your Hard Drive to store 10 or more songs at around 4 minutes for a decent quality.

    Did you ever observe that, mc68k? :)
  5. mc68k thread starter macrumors 68000


    Apr 16, 2002
    interesting, KC

    i didn't know thjat the iPod could do mpeg2 audio. i don't think i'd go lower than 128k encoding but your point is interesting.

    when the firmware is updated to accomodate mp4, then we'll have the best of both worlds: more quality w/less space and more battery life.

    it's nice that the device has so much flexibility (and quality)

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