I have a 5.1 ac3 file and a bitrate from 448. who do a convert this file to a 5.1 ac3 file and 224 bitrate.
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224 is insufficient for 5.1 ... that's intended as a 2/0 bitrate ... tripling the speaker set reduces the quality to 1/3rd of original ... that probably won't sound too good ... for most software 384k is the minimum allowed for a 5.1 surround stream
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@lordsmurf
I cant agree - I have 224 5.1 from 448 (and 384) 5.1 and it sounds ok, however I suspect its like video - all in the eye of the beholder (or ear in this case!). I don't have Dolby Dig. just Pro Logic and am very happy, I'm not a very discerning listener. Your standards may be (and probably are) much higher, but please try to give a balanced view for our posters (no offence meant).
Jukka -
@ Jukka. Updated my previous post with more info, a bit more balanced.
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@lordsmurf
Nice one, didn't realise the DD2.0 stuff or even think about the tripling of speaker numbers - fair point.
Keep up the good work!
Jukka -
You're also compressing an already compressed format which will degrade the sound.The differance in video bitrate that you save would be negligable ex:2 hr movie@448kbps=4600kbps vs. 224kbps=4800kbps.
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