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Different mp3 encoder value in "Audio Properties" and "

Hi

I'm using dbPoweramp and I just tried converting (by right clicking on the file) a FLAC to mp3.  I was trying different bit rates so that i could do some ABX comparing.

I've noticed that when converting to mp3 I'm getting different things in "Audio Properties" and "ID-Tag" in WIndows (I'm on XP). For example, in the Music Converter I chose -V 7.  In the resulting mp3 the "Audio Properties" say it is -V 5, while "ID-Tag" says it is -V 7.

Is this expected behaviour?

Cheers

Max

Different mp3 encoder value in "Audio Properties" and "

Reply #1
Normal quality was selected?

Different mp3 encoder value in "Audio Properties" and "

Reply #2
No, I selected Slow....

Different mp3 encoder value in "Audio Properties" and "

Reply #3
Then the profile is possibly changed internally in lame, try with normal.

Different mp3 encoder value in "Audio Properties" and "

Reply #4
OK, I'll try that as soon as I can and will report back with results.  I'll also try encoding via CD Ripper (rather than Music Converter) and see if the same thing happens. 

If Normal does not cause the same "error", should I stick with normal for ALL encoding?  Will I then be producing mp3s of a lesser quality (compared to if I was using "slow")? 

the profile is possibly changed internally in lame


If that is the case, is it to be expected or a bug? 


Cheers

Different mp3 encoder value in "Audio Properties" and "

Reply #5
What LAME version do you use, 3.100 alpha 2 ?

Different mp3 encoder value in "Audio Properties" and "

Reply #6
What LAME version do you use, 3.100 alpha 2 ?


No, I'm using 3.99.5.... 

Thanks for the reply.  Hope to hear more from you (or anyone else) about why this is happening. 

Cheers, much appreciated.

Different mp3 encoder value in "Audio Properties" and "

Reply #7
Is the audio properties in windows simply guessing based on average bit rate of file vs using the tag info.

Different mp3 encoder value in "Audio Properties" and "

Reply #8
I do not think it is guessing, it should be from the lame header

Different mp3 encoder value in "Audio Properties" and "

Reply #9
Hi all

I have tried it with "Normal" instead of "Slow".  The same thing happens.  No change. 

I then tried ripping using CD Ripper (instead of converting with MC).  Again, the same results.

Anyone got any ideas?

Ta

Max 


Different mp3 encoder value in "Audio Properties" and "

Reply #10
the profile is possibly changed internally in lame


If that is the case, is it to be expected or a bug? 


That's normal 3.99.x behavior, it resamples at lower sample rate and switches to a better psy model profile (value 5.63 in this case). The header stores integer values only, so it says 5.

Different mp3 encoder value in "Audio Properties" and "

Reply #11
Seems to be Lame 3.99.5 related, I encode a file:

Lame.exe -V 7 "z:\a.wav" "z:\a.mp3"

and even foobar says it is -V 5 on the profile.

Different mp3 encoder value in "Audio Properties" and "

Reply #12
That's normal 3.99.x behavior, it resamples at lower sample rate and switches to a better psy model profile (value 5.63 in this case). The header stores integer values only, so it says 5.


Not entirely sure I understand, but glad to hear it's normal!  Am I correct in saying it has something to do with the fact that these mega compressed mp3s are not 41000?  In which case, will all encoder settings that ARE 41000 show up as normal? 



[Moderator - title should read Different mp3 encoder value in "Audio Properties" and "ID-Tag"  Any chance f amending it as I seemed to have cropped it somehow.  Cheers.]

Different mp3 encoder value in "Audio Properties" and "

Reply #13
It's too long for the title, you didn't crop it.

Edit: Hmm, maybe not, I assumed it was an auto cropping

Different mp3 encoder value in "Audio Properties" and "

Reply #14
It's too long for the title, you didn't crop it.

Edit: Hmm, maybe not, I assumed it was an auto cropping


That's what I thought to begin with, but then I noticed I had much longer titles for other posts.  Never mind, no biggie.  Just did not think it made great sense cropped as it is.....

Anyhow, hopefully Robert (or someone) will pop by to confirm the presumption of the previous post I made.  Then that will be that sorted.... 

Cheers

 

Different mp3 encoder value in "Audio Properties" and "

Reply #15
That's what I thought to begin with, but then I noticed I had much longer titles for other posts.


Quotation marks take more space than one character. You can try “smart quotes” next time ... or as you added, "never mind".
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