iTunes Sound Quality

DarthBowie

macrumors member
Original poster
Aug 11, 2006
53
0
Hi. I have my sound quality for uploads at 256. However, when uploading songs today, I noticed that iTunes was uploading tracks at 260, 259, 256, and 250. Have any of you experienced this?

:confused::cool:
 

Cromulent

macrumors 603
Oct 2, 2006
6,039
36
The Land of Hope and Glory
Hi. I have my sound quality for uploads at 256. However, when uploading songs today, I noticed that iTunes was uploading tracks at 260, 259, 256, and 250. Have any of you experienced this?

:confused::cool:
You have variable bit rate selected (VBR) use constant bit rate (CBR) instead. If you are really keen on sound quality use AAC or better yet Apple Lossless.

VBR is not a bad thing though.
 

DarthBowie

macrumors member
Original poster
Aug 11, 2006
53
0
Thanks for the replies!

I just checked my setting for uploading music from a cd and it is set at AAC encoder, 256. I do not see settings for "variable." Did my eyes miss something?

Thank you!
 

GimmeSlack12

macrumors 603
Apr 29, 2005
5,395
8
San Francisco
You'll need to select 'other' in the rate drop down menu. In there it will show a checkbox for VBR or variable bit rate. Overall VBR is something I would recommend you use. It keeps file quality good and reduces file size (not significantly, but with many files it helps).
 

DarthBowie

macrumors member
Original poster
Aug 11, 2006
53
0
I prefer 256 AAC. I did find the section for VBR and it wasn't selected. I do not know why iTunes is still uploading my music from cd at VBR...
:confused::mad::cool:
 

DarthBowie

macrumors member
Original poster
Aug 11, 2006
53
0
Has anyone else had this problem in RECENT days? I've had this problem since I installed "Leopard." I made all of the correct selection in iTunes and I am STILL having this problem...
:mad::(:confused:
 

JTB

macrumors newbie
Oct 31, 2007
1
0
same here

Has anyone else had this problem in RECENT days? I've had this problem since I installed "Leopard." I made all of the correct selection in iTunes and I am STILL having this problem...
:mad::(:confused:
i have had the same problem. i did a total erase and added my files back on individually after i installed leopard and i noticed this when i tried to convert an album. the vbr is off and it is still doing it. no matter what different combination you do with changing the quality to changing the Hz to changing between mono and stereo it is still vbr. ugh, it's a total bug in the new leopard i think.
 

DarthBowie

macrumors member
Original poster
Aug 11, 2006
53
0
i have had the same problem. i did a total erase and added my files back on individually after i installed leopard and i noticed this when i tried to convert an album. the vbr is off and it is still doing it. no matter what different combination you do with changing the quality to changing the Hz to changing between mono and stereo it is still vbr. ugh, it's a total bug in the new leopard i think.
Yes, it is a pain! Has Apple addressed this "Leopard" issue?

:mad:
 

hankolerd

macrumors 6502
Sep 19, 2007
351
5
Seattle, WA
im sorry to hear that it is causing you grief...but if you really just step back and think about it, even though it is something that needs to be fixed, it really isn't that horrible of a problem..trust me, you are never going to notice the difference between 250 and 256, personally i run 192 to save some disk space...i only have a 500gig:apple:
 

GimmeSlack12

macrumors 603
Apr 29, 2005
5,395
8
San Francisco
im sorry to hear that it is causing you grief...but if you really just step back and think about it, even though it is something that needs to be fixed, it really isn't that horrible of a problem..trust me, you are never going to notice the difference between 250 and 256, personally i run 192 to save some disk space...i only have a 500gig:apple:
Agreed, if you can tell the difference even between 256 and 192 I will give you a medal. Its a very subjective topic where people love to think that they can hear a difference. Truth be told it is more a placebo effect than anything when it comes to bit rates of AAC and MP3's (when the bitrate is sufficiently high).
 

Killyp

macrumors 68040
Jun 14, 2006
3,860
5
There is definitely a notable difference between 192 and 256. 192 is 'very good' wheras 256 is 'as close to CD quality as you can get'.
 

jdavtz

macrumors 6502a
Aug 22, 2005
548
0
Kenya
Maybe people with good ears and good headphones or hifi gear can tell the difference between 256kbps and 192kbps, but I seriously doubt anyone could tell the difference between 256kbps CBR and 250-260kbps VBR (assuming that's what's going on here). (Not to say it isn't a bug though).

And - DarthBowie - please use 'importing' rather than 'uploading' - it would make things clearer for people trying to answer your concerns. 'Uploading' tends to be reserved for sending files from one computer to another, usually over the internet. I do see the logic in using the term for moving files from CD/camera/whatever to a computer ... it's just confusing as it's not common usage of the word.

Jonathan.
 

Fuchal

macrumors 68020
Sep 30, 2003
2,438
701
The nature of AAC does not allow it to encode at a 100% constant bitrate like the older MP3 format allows you to. This is perfectly normal. The files are not being encoded any differently.

Tiger would mask the bitrate with the iTunes setting that was used to encode the AAC file.

The way "CBR" AAC is encoded is by encoding a VBR file with a very small bitrate range (usually around 5kbps of the target bitrate). Therefore, the average bitrate fluctuates slightly from file to file.
 

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