- From: Maik Merten <maikmerten@googlemail.com>
- Date: Thu, 16 Jul 2009 12:20:59 +0200
Arve Bersvendsen wrote: > On Thu, 16 Jul 2009 03:23:40 +0200, Nils Dagsson Moskopp > <nils-dagsson-moskopp at dieweltistgarnichtso.net> wrote: > >> Am Mittwoch, den 15.07.2009, 19:16 -0500 schrieb Adam Shannon: >> >>> It has been tried but Apple will not implement it due to hardware >>> limitations. >> >> As if. I somehow recall that a few years ago, a Linux Distribution on >> Ipod did Vorbis (and Doom, incidentally - that was the original reason >> for me to put it on said device). >> >> <http://ipodlinux.org/> seems to be dead, though. > > The project you're looking for is Rockbox, http://rockbox.org/ -- afaik, > it does vorbis decoding in software, and had (has?) a battery lifetime > half of what the stock ipod firmware had. An nice thing is that Rockbox provides CPU-consumption numbers for an interesting set of codecs on various hardware platforms: http://www.rockbox.org/twiki/bin/view/Main/CodecPerformanceComparison Apparently Vorbis is about as complex as MP3, while AAC is a bit more expensive (this may be implementation specific). Anyway, all codecs only use a fraction of the available CPU time and the battery lifetime seems to mostly depend on proper device-dependant power management (here Rockbox lacks a bit, AFAIK). Given Vorbis plays even on old iPods "hardware limitations" may not be a 100% accurate assessment. Maik
Received on Thursday, 16 July 2009 03:20:59 UTC