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AAC vs AC3 bitrates (lemmy.dbzer0.com)

submitted 7 months ago by [email protected] to c/[email protected]

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In the past I've chosen I've often kept AC3 audio tracks thinking that their substantially higher bitrates made them better than the AAC tracks I compared them to. As I've since learned that AAC can be comparable to AC3 at a substantially lower bitrate, to have a means of comparing the two codecs, what would the AAC-equivalent bitrates be for 224kbps and 640kbps AC3?

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[–] bluetardis 3 points 7 months ago

Definitely needs some more testing as those numbers in the table look low to me. Archiving vs listening is a key point and storage is relatively cheap.

Listening on cheap Bluetooth headphones then you can get away with a low bitrate. If you are using better gear and/or music that has a lot of dynamic range and comes from strings (piano/classical/etc) then I would recommend 320 but your mileage may vary.

Listen, compare and decide. I have a library of about 110k tracks (musicbrainz-Picard is amazing) and I wish I had:

Focussed more on encoding albums rather than just songs and
Had 320 or flac