Re: mp3gain vs madplay

Rob Leslie wrote:

> On Mar 31, 2004, at 12:01 AM, Bruce Fitzsimons wrote:
>
>> I'm about to launch into a debugging session to see why mp3gain 
>> (http://mp3gain.sourceforge.net/ ) and madplay 0.15.1b don't seem to 
>> be playing together (no pun intended). I thought I'd ask if anyone 
>> has used the two together yet, or if there is another linux-based 
>> replaygain processor (for adding replaygain to existing mp3s) that is 
>> more reliable.
>>
>> map3gain does appear to be adding a tag, as it finds it again if 
>> rerun over the same file.
>
>
> From my brief look at the mp3gain code I couldn't find evidence that 
> it is actually writing a Replay Gain tag. It appears instead to be 
> modifying the global_gain field of each Layer III frame. This 
> modification should work with all players with or without Replay Gain 
> support, though there may not be any indication of it.
>
Thanks Rob.

I see the trick. It's linked off replaygain.org, and uses the 
*algorithm*, but doesn't write the standard replaygain mp3 tags. It 
*does* write some custom tags in the APE standard though.

I'll see what improvements I can come up with.

/Bruce