Correct way to convert from foobar-identified lossless format to lossy? by Dark_Ansem at 5:57 AM EDT on August 19, 2017
So, what is the correct way to convert audio files currently in formats identified by foobar as "lossless" to other lossless and lossy formats?
by Kurausukun at 6:01 AM EDT on August 19, 2017
...By hitting the convert button? Your question doesn't really make sense. What are you trying to do? Also, don't necessarily trust what foobar calls "lossless"; it calls 4-bit ADPCM lossless too, which it isn't.
by Dark_Ansem at 9:42 AM EDT on August 19, 2017
It doesn't to you. Pretty much everyone else understood.

What I mean is how to convert without losing any more quality. Do I need to always convert to WAV first and then lossy?
by bnnm at 9:54 AM EDT on August 19, 2017
foobar also calls WAVs lossless, and you can have WAV files that are lossy too (even if PCM), so just ignore what foobar says.

What you want is convert between formats preserving the data itself, this would be a "lossless" conversion. Depending on the format this is possible or not, so you'll have to be more specific.
If you convert to WAV then to another format, most of the time you'll have a "lossy" conversion.
by Dark_Ansem at 10:02 AM EDT on August 19, 2017
Ouch. Possibly the best way is just to directly convert from, say, AT3plus to OGG q10, rather than doing the -Wav intermediate step?
by bnnm at 10:27 AM EDT on August 19, 2017
Not possible I'm afraid. If some program claims to work, it actually converts to WAV internally (=lossy) first.

See "codec" info in foobar. Generally you can losslessly convert (always with custom tools):
- PCM > WAV
- MS-IMA/XBOX ADPCM, x-IMA ADPCM, MSADPCM > WAV (but some players may not play it).
- Custom Vorbis > Ogg Vorbis
- MPEG audio > MP3 (just renaming might work)
- EALayer3 > MP3 (with some minor loss of data)

For game formats you can usually convert between two formats if they use the same codec.
by Dark_Ansem at 11:00 AM EDT on August 19, 2017
Oh I see. Thanks then.
Miles sound tools wouldn't help, would it?


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