Mp3 vs Mp4


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Well, it's a little more than a derivation... it USES MP4 to compress the audio. They just added rights management and ID3 tagging and called it AAC.

wait, are you sure AAC uses ID3 tag?

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at lower then 128kbs bitrates only

in the same site there is a test for 128+ bitrates and aac is ties with eac as the best format too

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,Oct 20 2003, 20:07] in the same site there is a test for 128+ bitrates and aac is ties with eac as the best format too

he was talking about the nero HE aac codec, which is designed for best quality at lower bitrates

so by these standards I could take my cd collection and re-rip them to 160kbps aac and hear no difference from my 192kbps mp3s?

probably not :yes:

but CBR 192 MP3 is not up to standard in my book

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at this point, we're not just comparing the simple number such as bit rate. obviously 128 is more than 64, it doesn't take a 3 year old to figure out.

just listen to it and you'll see for yourself.

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ok, next question is, is there any programs other than itunes to encode aac for windows?

as far as I know, cdex

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how can a bit rate of 64 compare to 128 in whatever format.

alright the filesize might be lower but that is about it, somthing which sony have been doing with their ATRAC compression system. You can get 30 albums on 1 cd. and there is no loss in audio quality.

thats impossible

for no audio quality loss, you need a lossless compression and those average only about 50% reduction in file size

well for starters the human ear cant even hear the full range of CD audio at 44khz...so why would it matter if a 64kbps mp4 sounded just like a 160kbps mp3

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how can a bit rate of 64 compare to 128 in whatever format.

alright the filesize might be lower but that is about it, somthing which sony have been doing with their ATRAC compression system. You can get 30 albums on 1 cd. and there is no loss in audio quality.

thats impossible

for no audio quality loss, you need a lossless compression and those average only about 50% reduction in file size

well for starters the human ear cant even hear the full range of CD audio at 44khz...so why would it matter if a 64kbps mp4 sounded just like a 160kbps mp3

that?s frequency budd:whistle:e:

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I found a few encoders, but when I checked EAC's site they recommended FAAC. I guess I'll have to give that a try when I get home. Rip one track and compare lame, itunes encoder, and faac and see if I can tell the difference.

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lmfao - yeah - but I use the Win XP Plus! DME to encode files to .wma with variable bitrates, so that makes them even smaller and yet just as good - *BUT* winamp can't play the variable bitrate encoded ones ass of yet - for some reason.

They work fine for me, that's what I use in my mp3 player and they work in winamp too

As for the comparison between the different formats, the listening medium is also very important. The difference between formats/bitrates is far more pronounced on a normal/hi quality speaker system than a pair of earbuds from an mp3 player...I hate low bitrate media on the PC because it sounds like crap (128 kbps mp3, 64 kbps wma, whatever, it all sucks at that bitrate) but on the mp3 player it's tolerable. You dont' get a huge choice of file types on portable audio players, so you use what works best at the lowest bitrate, and that's wma.

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aac is just the audio stream without the mpeg 4 container so its technically different. m4a and m4p is apples extention for audio so it wont get confused with mp4 which signifies the video format. cuz i dont think u want winamp to popup when u watch a video.

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lol actually how many are there?

mp4, m4a.. ?

aac, m4a, m4p, mp4 as far as I know

Isn't that excessive when all the other formats have just one?

whoa thats confusing. but i've only got .m4a here. wish it was .aac though.

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well...I've ripped and encoded some albums, and I will say that approx a 4mb mp3 file is equal to 3mb aac file.....so 25% drop in file size with no quality loss. When you take a 10gb IPOD that has approx. 9GB on it that is a large difference. That 9GB quickly turns into roughly 7gb....WOW.

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well...I've ripped and encoded some albums, and I will say that approx a 4mb mp3 file is equal to 3mb aac file.....so 25% drop in file size with no quality loss. When you take a 10gb IPOD that has approx. 9GB on it that is a large difference. That 9GB quickly turns into roughly 7gb....WOW.

I love AAC, a wonderful format. (Y) :) :D

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well...I've ripped and encoded some albums, and I will say that approx a 4mb mp3 file is equal to 3mb aac file.....so 25% drop in file size with no quality loss. When you take a 10gb IPOD that has approx. 9GB on it that is a large difference. That 9GB quickly turns into roughly 7gb....WOW.

what are you talking about? 128 AAC has the same size as 128 MP3, 192 AAC has the same size as 192 MP3. unless of course you're comparing 128 AAC to 160/192 MP3...

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