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LAME mp3 bit rate question

Discussion in 'Computers' started by Scott Wong, Apr 3, 2003.

  1. Scott Wong

    Scott Wong Well-Known Member

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    Per my previous thread regarding my mp3 experience, I am currently using CDex to rip and encode my current CD collection into .mp3 format.

    I have Windows XP coupled with Windows Media Player 9 (WMP9). I know judging from previous discussing using the "alt preset standard" method in LAME for encoding is supposed to over complete transparency from the original recording to the .mp3 format. And it probably does. Sound quality is pretty damn good even though it is in a .mp3 format.

    1. It bugs me that Windows XP/Windows Explorer and WMP9 do not recognize the bit rate of mp3's encoded with a VBR (variable bit rate) I'm getting nervous because I still have quite a bit of encoding to do (I have well over 400 CD's) I have a 20GB hard drive I added in my PC to simply store all of my mp3's. And according to Windows Explorer when I click on the Properties tab of my MP3 folder it says I have 1,760 files thus far using 8.05GB of space. I don't believe this is entirely accurate because of it not being able to read the VBR encoded mp3 file.

    ex: I know for a fact burning any one particular track with "alt preset standard" usually encodes somewhere between 170kbps - 230kbps depending upon the quality of the original. Upon playing one of these tracks with WMP9 or even looking at in Windows Explorer, it shows that particular file having a bit of around 500kbps!! [​IMG]
    I know this is incorrect. I'm just wondering, because Windows XP cannot read the VBR encoded material, is it taking that into consideration? In other words, it says I'm using 8.05GB of space for my .mp3 files but am I really only using like 5.0GB of space or even less??? Or is that an accurate figure? Damn, I hope not. Which brings me to my second question.

    2. Is it really necessary to encode at VBR using "alt preset standard"? Am I really going to be able to tell the difference than if I were to burn at a CBR of 192kbps? I've gotten several hundred from a friend using 192kbps CBR and they all sound really good to me. I'm just wondering if perhaps "alt preset standard" is... overkill? What are your thoughts and opinions on this?

    Thanks...

    Scott.
     
  2. Nathan_W

    Nathan_W Well-Known Member

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  3. Scott Wong

    Scott Wong Well-Known Member

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    Hmmm... I guess as far as WMP9 question, if WMP9 and WinXP is saying I'm encoding any one particular .mp3 file at over 500kbps... then I'm wondering if the file size is incorrect? How could it not be? I guess what I'm saying is WinXP or WMP9 for that matter cannot read VBR encoded .mp3's... if it's simply throwing out a figure of 500kbps (which it is) then surely the estimate of how big my entire MP3 folder on my c: drive must be incorrect, as well... isn't it? I'm not doubting I have 1,760 files. I'm sure I do. I'm just doubting that these 1,760 files are actually taking up over 8.0 GB of information on my new hard drive. Could that be correct? Bear in mind, I got the two figures of 1,760 files and 8.0GB right from my MP3 folder. I am not talking about the entire c: drive.

    Scott.
     
  4. Camp

    Camp Well-Known Member

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  5. Camp

    Camp Well-Known Member

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  6. Scott Wong

    Scott Wong Well-Known Member

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  7. Nathan_W

    Nathan_W Well-Known Member

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    Well, I'm no expert, and I'm not sure how Windows'reading a file's bitrate would relate to its determining that file's size. Yes, an mp3 with a higher bitrate than another would be larger, but when Windows determines a file's size, it's just counting the bytes it takes up...or something. Someone else could probably explain this better. Try posting at www.hydrogenaudio.org

    One more thing, If you actually have 1760 files they'd need to average only 4.5~5 megs each to take up about 8 gigs. If I did my math correctly...[​IMG]


    oops, boy I type slow.....[​IMG]
     
  8. Scott Wong

    Scott Wong Well-Known Member

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  9. Camp

    Camp Well-Known Member

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    The sun is blue.

    Is that better? [​IMG]
     
  10. Scott Wong

    Scott Wong Well-Known Member

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    Yes! Now the next time you respond to one of my cries for help, that's the kind of answer I expect! [​IMG]

    hahaha... thanks you guys for all the help.

    One more thing though, from all of your experiences, am I going overkill on these .mp3's as far as quality goes? I don't wanna make it seem like I'm beating a dead horse, so to speak. But 1,760 .mp3 files taking up 8.05GB of space? Is this pretty much normal? Granted, I've used alt preset standard for all of the encoding I've done and the 192 CBR encoded files I've gotten from my friend.

    I honestly am still not hearing that great of a difference, if any between "alt preset standard" and 192 CBR encoded files. With that said, which method of encoding takes up the *least* amount of space? The file encoded at a constant 192kbps or the VBR encoded files?

    Scott.
     
  11. Camp

    Camp Well-Known Member

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  12. Angelo.M

    Angelo.M Well-Known Member

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