Old 29th September 2007, 12:26   #1
javajeff
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VBR vs CBR vs ABR vs Compatibility OPINIONS PLEASE

I have been reading about this, and trying to decide my best option. I have been using 192k constant, but have thought about a higher and variable option. Are there any compatibilities with either Winamp, iTUNES, or iPOD? I have an ipod nano first generation. I am interested in opinions. I guess another option is to leave mp3 and go to another format, but there are few that work with an ipod nano.
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Old 29th September 2007, 12:41   #2
gaekwad2
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MP4/AAC works fine with iPods and iTrash and probably delivers better quality as well.

There are reports of some iPods skipping with vbr mp3, but I don't know whether the Nano is affected (if it isn't, alt-preset fast standard would be the recommended mp3 setting but as said you might as well use AAC).
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Old 29th September 2007, 12:51   #3
javajeff
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I have never used MP4/AAC. Is that what you use? and what settings if so? Are there any incompatibilities with any players, car stereos, DVD players, etc. My current car stereo only plays regular CDs, but I think that a future car would have mp3 support. I am looking for the best sound quality and most compatibility. Thanks.
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Old 29th September 2007, 17:34   #4
kafkef
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i usually go for apple lossless which has great quality (being lossless and all) and if i'm to burn music to a cd, which i rarely do, i just convert to mp3.
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Old 29th September 2007, 18:45   #5
javajeff
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I looked at the lossless, and a 9 meg file in 192 was 40 megs. That is much bigger. What is your meg to minute ratio?
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Old 29th September 2007, 18:53   #6
kafkef
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about 6mb per minute
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Old 29th September 2007, 19:31   #7
javajeff
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that is a significant difference. Can you tell a big difference in sound quality? I notice times where I can get some distortion at 192. Maybe distortion is the wrong word, but it loses clarity in some real noisy song parts.
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Old 29th September 2007, 21:41   #8
kafkef
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yeah the sound feels a lot 'cleaner' and overall better.
though everyone doesn't hear these differences, for example my room mate can't hear any differences between 128kbit mp3 and higher bitrates
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Old 29th September 2007, 22:57   #9
gaekwad2
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The question is whether it only feels cleaner because you know it's lossless. *cough*ABX*cough*
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Old 30th September 2007, 00:10   #10
kafkef
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well, maybe 'feels' was the wrong word.. it does sound better.

i mean come on.. 128kbit mp3 vs lossless.. (kinda like kia vs ferrari :P)
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Old 30th September 2007, 10:03   #11
flocksoft
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Quote:
Originally posted by kafkef
well, maybe 'feels' was the wrong word.. it does sound better.
feels, sounds, much rich, louder, less flat it's the same when you know what you're listening

as suggested by gaekwad2, read here (basic guide):
- http://en.wikipedia.org/wiki/ABX_test
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Old 1st October 2007, 02:58   #12
Moguta
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Concerning the original topic, VBR (and ABR, which is just VBR that aims for a certain Average BitRate) ought to be compatible with all but the very oldest MP3 decoders. iPods should be fine.

Using the LAME 3.97 encoder with -V2 --vbr-new encoding settings should result in audio indistinguishable from the original, to the great majority of people under most circumstances. Sometimes the overall file's bitrate may be lower than the 192 CBR you're encoding at (and this doesn't mean it's lower quality), but it will also know when songs may need more room too.



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