Constant vs Variable [CBR vs VBR] - AVS Forum
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post #1 of 5 Old 04-23-2013, 11:08 AM - Thread Starter
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Ok I'm new to all things Audio and Audio conversions


But I have a .aiff file-formated audio file (which I ripped from a home DVD with Handbreak and I wanted to convert it to MP3.

I was going to use Adobe Audition and do the ...save as.... but them I'm asked if I want to use CBR or VBR?

I just want to convert the audio and keep the highest quality that uses less space.

When I use VBR the file is smaller than when i use CBR..

So what exactly is the difference?
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post #2 of 5 Old 04-23-2013, 11:53 AM
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For the highest quality, I would go with CBR. Constant Bit Rate means the bit rate is a constant for the whole song. I would recommend the highest setting (320 kbps). Variable means the bit rate changes (varies) throughout the song. This setting is best if you really want the smallest file and are concerned about space.
Still the difference is very minimal (sound wise) and you probably will not hear a difference. Unless you choose 160 kbps vs 320 kbps, then you could hear a difference.
If you aren't concerned with hard drive space, go with the CBR at 320 kbps. It will still be a small file and you will get the best possible lossy overall.
Hope this helps
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post #3 of 5 Old 04-23-2013, 11:59 AM
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If it's just one song, then I would choose CBR. If you are considering your entire collection then you might rather choose VBR for the savings on disk space, in particular mobile devices. As volta said, it's hard to say whether you'll hear a difference.

The answer to your next question is VBR -0 wink.gif This will provide the highest bitrate in the resulting file.

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post #4 of 5 Old 04-23-2013, 12:02 PM
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Quote:
I just want to convert the audio and keep the highest quality that uses less space.

Then use VBR
Quote:
So what exactly is the difference?

http://wiki.hydrogenaudio.org/index.php?title=LAME

Look at the section titled "understanding the bitrate settings." VBR > CBR
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post #5 of 5 Old 04-24-2013, 11:38 AM - Thread Starter
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Quote:
Originally Posted by ssh33 View Post

Then use VBR
http://wiki.hydrogenaudio.org/index.php?title=LAME

Look at the section titled "understanding the bitrate settings." VBR > CBR


Perfect!
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