Current version for Windows?, MP3GAIN_UNDO entry in the header, really lossless?
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#24 Current version for Windows?, MP3GAIN_UNDO entry in the header, really lossless?
// Unfortunately (for whatever reason) I can't create a thread in the forum. If possible, please move it there - thanks!
Hello everyone,
what is the latest (stable) version for use under Windows?
That should be "mp3gain-dos-1_5_2.zip" - right?
On this site one can read: "If you download any of the Windows MP3Gain files above, this file is included.".
However, "mp3gain-win-1_2_5.zip" as well as "mp3gain-win-1_3_4.zip" contain the "mp3gain.exe" in the older version 1.4.6.
Or is this sentence to be understood differently?
Can the GUI from the v1.2.5 or v1.3.4 package be used without problems with the "mp3gain.exe" 1.5.2 as backend?
If gain changes are undone, a file still has a different hash than before because the entry "MP3GAIN_UNDO..." is added to the header. Can this behavior be changed?
Speaking of lossless... I came across the following old thread: mp3gain is NOT lossless
How is this to be understood?
Technically speaking, it is actually not lossless but practically inaudible?
Thanks in advance for any answer!
Regards, Martin
Yes, the 1.5.2 back end will work with the v1.2.5 or v1.3.4 versions of the GUI.
The menu "Options -> Tags -> Ignore (do not read or write tags)" will prevent all header changes.
The message by 2Bdecided (third-from-last message) in that "mp3gain is NOT lossless" gives a technical breakdown, but the short version is:
Most of the time it's completely lossless, i.e. the hash should be the same if you make a gain change of +N and then make a gain change of -N.
In some weird cases where it's not technically lossless at the bit level (hash is different), it's literally inaudible, not just "practically" inaudible. The mathematical difference is so small that not even your dog would be able to hear a difference.