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Topic: Mp3gain Usage Guide (Read 23711 times) previous topic - next topic
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Mp3gain Usage Guide

[span style='font-size:14pt;line-height:100%']MP3Gain Overview[/span]


Quote
MP3Gain analyzes mp3 files to determine how loud they sound to the human ear. It can then adjust the mp3 files so that they all have the same loudness without any quality loss. This way, you don't have to keep reaching for the volume dial on your mp3 player every time it switches to a new song......

.....Maximizing can be used to make an mp3 as loud as possible without clipping. This can be useful, but keep in mind that this will not make your mp3's the same volume. In fact, if you maximize every track on a CD, some of the original quiet tracks can become louder than the original loud tracks.



[span style='font-size:14pt;line-height:100%']MP3Gain Usage Guide[/span]


Clipping Removal (Maximizing)

"Clipping" is when the music hits max volume and gets distorted.

To permanently remove clipping and keep volume differences between each track on an album you will need Mp3Gain:

http://mp3gain.sourceforge.net


Open MP3Gain, adjust:

Options\Advanced\Enable Maximizing Features (tick)


Click the Track Analysis button list arrow, click Album Analysis from the drop down list & then press the Album Analysis button

MP3Gain will analyze the file(s) & embed an APE v2.0 tag with the analysis results into the file(s).

Now if any Mp3 file in Mp3Gain has a "Y" under the clip(Track) or clip(album) rows click Modify Gain from the menu bar & select the Apply Max-No-clip Gain for Album command. This will physically apply the album gain changes to the file(s).

This process is 100% lossless & reversible

Gain changes will be reflected on ANY mp3 decoder.

Mp3gain Usage Guide

Reply #1
Quote
MP3Gain will analyze the file(s) & embed an ID3 tag with the analysis results into the file(s).

Is this a new version that uses ID3 Tags? AFAIK, previous versions used ape tags, that's why foobar displayed empty tags right after applying mp3gain

Mp3gain Usage Guide

Reply #2
Quote
Quote
MP3Gain will analyze the file(s) & embed an ID3 tag with the analysis results into the file(s).

Is this a new version that uses ID3 Tags? AFAIK, previous versions used ape tags, that's why foobar displayed empty tags right after applying mp3gain
[a href="index.php?act=findpost&pid=273715"][{POST_SNAPBACK}][/a]

Your correct.

Mp3gain Usage Guide

Reply #3
Quote
Quote
Quote
MP3Gain will analyze the file(s) & embed an ID3 tag with the analysis results into the file(s).

Is this a new version that uses ID3 Tags? AFAIK, previous versions used ape tags, that's why foobar displayed empty tags right after applying mp3gain
[a href="index.php?act=findpost&pid=273715"][{POST_SNAPBACK}][/a]

Your correct.
[a href="index.php?act=findpost&pid=273716"][{POST_SNAPBACK}][/a]


ID3v2 tag support is coming. Some time in the not too distant future.

-Glen

Mp3gain Usage Guide

Reply #4
Quote
ID3v2 tag support is coming. Some time in the not too distant future.

-Glen
[{POST_SNAPBACK}][/a]

Why not also support creating or updating a [a href="http://gabriel.mp3-tech.org/mp3infotag.html]LAME Tag[/url] with Replay Gain & MP3 Gain values?

Code: [Select]
bytes $A7-$AF  Replay Gain

Code: [Select]
byte $B5  MP3 Gain  

Mp3gain Usage Guide

Reply #5
ID3v2 tag support is coming. Some time in the not too distant future.

-Glen


Please, Snelg, listen to our pleas! Take pity on us!

I use MP3Gain a lot, and I'm sure that id3v2 support will be VERY appreciated by everyone.

Many thanks in advance,
best regards.

Mp3gain Usage Guide

Reply #6
Can someone tell me if you use mp3gain on mp3's, then convert the mp3's to waves to burn to cdr. Is the volume adjustments made by mp3gain carried over to the wave files. Or do they revert to original mp3 volumes? Also do car stereos that play mp3 discs make use of the adjustments made by mp3gain?
Thanks for any help on this newbie question.


FB
[img]0132834091\'  border=\'0\' alt=\'user posted image\']

Mp3gain Usage Guide

Reply #7
Is the volume adjustments made by mp3gain carried over to the wave files.
yes
Or do they revert to original mp3 volumes?
no

[rant]I hate it when people ask a question like this.[/rant]

Also do car stereos that play mp3 discs make use of the adjustments made by mp3gain?
Yes.  These adjustments are made to the actual data.

Mp3gain Usage Guide

Reply #8
@flashback: See HA Wiki entry for MP3gain.

In a nutshell: MP3gain works by modifying the global_gain value in each frame, and recording the delta in a custom tag to allow restoration of original global_gain. This means that it is the audio data that's being modified, instead of a mere tag. This also means that all MP3 player (and burning MP3's to CD's, or decoding MP3's to WAV's) will incorporate the replaygain modification.

Mp3gain Usage Guide

Reply #9
Is the volume adjustments made by mp3gain carried over to the wave files.
yes
Or do they revert to original mp3 volumes?
no

[rant]I hate it when people ask a question like this.[/rant]

Also do car stereos that play mp3 discs make use of the adjustments made by mp3gain?
Yes.  These adjustments are made to the actual data.


Thank You 


@flashback: See HA Wiki entry for MP3gain.

In a nutshell: MP3gain works by modifying the global_gain value in each frame, and recording the delta in a custom tag to allow restoration of original global_gain. This means that it is the audio data that's being modified, instead of a mere tag. This also means that all MP3 player (and burning MP3's to CD's, or decoding MP3's to WAV's) will incorporate the replaygain modification.



Thanks 
[img]0132834091\'  border=\'0\' alt=\'user posted image\']

Mp3gain Usage Guide

Reply #10
Is there a way to only analyse  the value of the actual volume and don't modify the mp3gain ?

I tried option -x but it still changes the value

Mp3gain Usage Guide

Reply #11
ID3v2 tag support is coming. Some time in the not too distant future.

-Glen


I'm still really looking forward to ID3v2 support in MP3gain and have not given up hope.    Perhaps Feb 15 2010?


Mp3gain Usage Guide

Reply #13
Is there a way to only analyse  the value of the actual volume and don't modify the mp3gain ?

It's right there in the help screen:
Quote
/s s - skip (ignore) stored tag info (do not read or write tags)

Mp3gain Usage Guide

Reply #14
@spies:
http://www.hydrogenaudio.org/forums/index....showtopic=49751

greynol, MetaMP3 is brilliant!  Thanks so much for the tip, not sure why I did not come across it before when checking on ID3v2 support in MP3gain.  I was thinking of taking the same approach as MetaMP3 but doing it as a two step process.  That is to run the tracks through MP3gain and then covert the APEv2 tags to ID3v2 using another tool such as dBpoweramp. Using MetaMP3 should allow me to do it in one step.


Re: Mp3gain Usage Guide

Reply #16
Guys, does anyone know how to automatically lower the sound level of a clipped MP3 slightly below 0 dB via the command line and stay there without normalizing the volume according to any standards? In the graphical wrapper, this is called “max no-clip gain”.

• Join our efforts to make Helix MP3 encoder great again
• Opus complexity & qAAC dependence on Apple is an aberration from Vorbis & Musepack breakthroughs
• Let's pray that D. Bryant improve WavPack hybrid, C. Helmrich update FSLAC, M. van Beurden teach FLAC to handle non-audio data

Re: Mp3gain Usage Guide

Reply #17
You can't. The max no-clip gain option is only present in the GUI.

 

Re: Mp3gain Usage Guide

Reply #18
The no-clip gain option is exclusively available in the GU; it cannot be accessed programmatically.