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desbma / r128gain

Fast audio loudness scanner & tagger (ReplayGain v2 / R128)
GNU Lesser General Public License v2.1
171 stars 9 forks source link

opus replaygain vs other replaygain loudness #12

Closed averms closed 5 years ago

averms commented 5 years ago

If I run this on my library that is partly opus and partly m4a, it seems like it will tag the files with different base loudnesses. This is bad if I want to skip from an opus track to an m4a track. If this true can we get an option that makes the entire library have the same loudness?

desbma commented 5 years ago

The different tag formats (ReplayGain and Opus R128_GAIN) use a different reference loudness level. This is properly handled by storing the track loudness relative to that reference, and allows having a similar level across different formats (exactly what you want).

Try it yourself with a player that supports both gain formats (ie. for Android Foobar2000 or GoneMAD Music Player), and you will see hear that it works.

averms commented 5 years ago

Oh okay that make sense.