3/24/2023 0 Comments Something that works like mp3 gain![]() ![]() What this means in practice is that mAirList (or any other MP3 player) should NOT be attempting to change the level of MP3Gain-processed files further by looking for and applying tags, because the level change HAS ALREADY BEEN APPLIED INTERNALLY within the file’s frames. As I said before, I personally use MP3Gain totally without tags, as I do not ever need to be able to undo its changes but it WILL still apply the Global Gain frame changes when I run it. So, the presence or absence of a tag is irrelevant MP3Gain alters MP3 files at a much deeper level which you would not detect, unless you did a frame-by-frame analysis of an MP3 file. I just did a test here on an MP3 file using MP3Gain, and in its standard setup, it writes four APEv2 tags: MP3GAIN_MINMAX and MP3GAIN_UNDO (which are indeed concerned with reversing or undo-ing MP3Gain changes), REPLAYGAIN_TRACK_PEAK, and REPLAYGAIN_TRACK_GAIN.īUT remember that these tags are purely for MP3Gain internal use! Mp3Gain does alter the Global Gain field within each frame in your MP3 file. This was a design decision made in the early 2000s to specifically avoid causing problems or’interfering’ with other tag formats such as ID3v1. Well, I know that MP3Gain writes its ‘undo’ and ‘analysis’ tags in APEv2 format, and always has done. ![]() I’ve not yet encountered a tool which puts the information there. MAirList is looking for the gain information in UserTextFrame containing labels REPLAYGAIN_*. $EYED3 -set-user-text-frame="REPLAYGAIN_TRACK_GAIN:$GAIN dB" "$FILE" > /dev/null Sed -n 's/Recommended "Track" dB change: \(\ \).*/\1/p'`Įcho "$FILE: no gain information in file" >
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