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AAC vs LAME Mp3 Battery drain on Sony E series
post Mar 15 2011, 17:08
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Hi, I have a Sony E353 walkman mp3 player (also plays ogg, aac, flac, etc) anyway, I was thinking of converting my library to AAC 156kbps VBR but I was wondering if that or LAME q3 would drain the battery more, at identical bitrates, let's say 128 CBR for both AAC and LAME Mp3 (I'm using version 3.98.4) which would be a bigger drain on the battery?

Thanks so much for your help smile.gif
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post Jun 13 2011, 10:34
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Don't know about the Sony walkman, but on a Nokia N79, testing the CPU usage I got this (most to least CPU usage):
OGG Vorbis>>>>>AAC>>MP3>FLAC

So OGG used the most CPU by a significant margin, while the other 3 were more close. AAC still appeared noticeably higher than MP3, while MP3 and FLAC were very close, the latter being just slightly more efficient. But this was just a quick test, I might do something more thorough at some point. I used variable bitrate for all of them. (around 150-200kbps for the lossy codecs, IIRC)
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