Fluctuating birate

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Fluctuating birate

Postby meatsean » Tue Feb 06, 2018 9:32 pm

I am currently running MM version 4.1.20.1864 on Windows 10, version 1709.

When I rip a CD, I set MP3 setting to standard (fast) VBR 192 kbps but after ripping, MM displays several different bitrates.

If I set MM to rip @192 kbps, should the MP3 be ripped at the preset setting?
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Re: Fluctuating birate

Postby Peke » Tue Feb 06, 2018 9:36 pm

Hi,
This is normal as VBR means Variable Bit Rate and MMW shows calculated Average Bit Rate.

To clear the rest ABR means Average Bit Rate and CBR means Constant Bit Rate
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Re: Fluctuating birate

Postby meatsean » Tue Feb 06, 2018 9:55 pm

Thank you.

So is that why the sound quality of the ripped tracks fluctuate so much? Also, volume leveling is at the default 89db but playback volume is all over the place.

If I set MP3 setting to Constant Bit Rate, would that fix the sound quality of the tracks and would volume be leveled at 89db for all tracks?
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Re: Fluctuating birate

Postby Lowlander » Wed Feb 07, 2018 12:26 am

You shouldn't notice a quality difference. It just means it won't use as many bits for parts of the song that don't have that much information to encode (like silence).

Is volume fluctuating within a song or between songs? With the latter you maybe using Album Volume on Playback which does fluctuate in volume between songs on an Album (preserving their volume differences as on the Album).
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Re: Fluctuating birate

Postby meatsean » Wed Feb 07, 2018 11:37 am

Volume fluctuates from track to track. But if you rip tracks at a preset volume level, shouldn't MM normalize all tracks?
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Re: Fluctuating birate

Postby Lowlander » Wed Feb 07, 2018 3:29 pm

If you enable Volume Leveling in the Rip Dialog it will Rip all files to the same volume. Disable Play > Level Playback Volume in the Main Menu and try to play again.
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Re: Fluctuating birate

Postby Peke » Thu Feb 08, 2018 8:24 am

And for existing tracks you can analyze volume and then by simply enable Level Volume playback from Play menu will have them played at same level.
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