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Topic: Replaygain doubt (Read 5467 times) previous topic - next topic
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Replaygain doubt

I think mp3gain stores gain information within the metadata of mp3 files.

Will this information be used by any kind of player?

I want to burn a cd with several mp3 files for my car audio and i doubt it will recognize the info from metadata...

Replaygain doubt

Reply #1 –
I believe CdBurnerXP will recognize gain tags and can optionally apply the gain to the files being burnt. You may also do this to a copy of the files before burning, using a program like foobar or MP3Gain.

Replaygain doubt

Reply #2 –
I'm using MP3Gain to store AlbumGain in my files... but will this info be used by my car audio or should i download any other software to normalize the mp3s???

Replaygain doubt

Reply #3 –
As far as I know, MP3Gain actually changes the volume of the mp3 -- so anything you play it on will use it because the mp3 is different. It stores info in tags so you can undo it.

Replaygain doubt

Reply #4 –
Pep

I believe you have your information wrong or you are confusing MP3GAIN with Replaygain analysis. You can confirm via the help file included with MP3Gain. The metadata that it writes is undo information, not replaygain values. The program makes actual changes to your audio files, so there is no need for a player to have ability to read tags. As long as your car cd player can play mp3 files it should have no problems.

Edit: As also explained in post above

Replaygain doubt

Reply #5 –
Uhm, i thought mp3gain stores the gain in tags... thank you.

Sorry for my ignorance.

Replaygain doubt

Reply #6 –
Quote from: tpijag on
The metadata that it writes is undo information, not replaygain values.
Both are written and the RG values reflect any changes made to the audio data.

Quote from: pep on
i thought mp3gain stores the gain in tags...
pep, you are correct.
 

Replaygain doubt

Reply #7 –
What MP3Gain does is explained in the MP3Gain section of the Replay Gain page in the HA wiki.

By default, MP3Gain does what all ReplayGain scanners typically do: it only scans the file and writes tags without changing the audio data. If you use MP3Gain in this default mode, then your player has to support reading ReplayGain tags and applying the gain changes during playback, which I doubt your car's player is capable of doing.

You can also run MP3Gain in a mode where it "applies" the gain, which scans the file (if it doesn't have tags already) and then changes the audio data. This gets the "natural" playback volume of the MP3 to within 1.5dB of the target, and does not require special support in the player. Tags are still written for those players which support them, so they can adjust the gain to the precise target, rather than within 1.5dB of it.

foobar2000's built-in ReplayGain scanner has both modes as well, although before applying the gain, you have to do the scan first; it doesn't do it automatically.