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View Full Version : current version of apple loss option is it the new open source version?



Sossity
10-29-2011, 11:18 PM
I got a little confused reading in another thread about this, & someone mentioned that the current Apple lossless option in dbpoweramp is a reversed enginerred, & it seems that the new codec that will be opensource is differet from the apple lossless option now

is there a difference? or are they the same?

I dont want to go converting anything & using up my time until dbpoweramp has the official open source apple lossless format.

Spoon
10-31-2011, 03:32 AM
Lossless is lossless, there will be no differences to the quality.

Sossity
10-31-2011, 03:59 PM
So it is compatable now? is there any reason to wait to do some converting of my flac to mac apple lossless files?

BrodyBoy
10-31-2011, 05:10 PM
So it is compatable now? is there any reason to wait to do some converting of my flac to mac apple lossless files?
As I responded to you in one of the other threads where you've asked the same question, I can confirm that the existing ALAC encoder in dBp is compatible. I've used it on tens of thousands of files and never experienced a single problem.

And as Spoon said, lossless is lossless. By definition, the quality cannot be different.

tester
11-01-2011, 12:03 PM
I think the apprehension comes from the fact that the current version of the dBpoweramp ALAC codec is reverse engineered. In another thread Spoon has stated there will be no compatibility issues, but it would be nice if someone could look at the apple code and confirm that the reverse engineering was in fact done correctly (which is what I expect). Code differences would be along the line of Y = a + b versus Y = b + a.

BrodyBoy
11-01-2011, 08:41 PM
Don't thousands (perhaps hundreds of thousands or more) of files successfully converted without issues qualify as evidence that it was done correctly?

tester
11-02-2011, 03:47 AM
I am quite certain that you are correct. However if I were the one doing the reverse engineering, followed by the code being made public, I would be curious to compare notes.

tester
11-02-2011, 03:54 AM
One more point that I want to bring up. Successful conversion today doesn't guarantee that Apple won't make a change that results in future compatibility issues. Granted a low probability of occurrence, but worth doing a source comparison now that its available.

Spoon
11-02-2011, 04:16 AM
dBpoweramp will always be able to read those files, even if Apple were to make a change, at that time you could encode ALAC >> ALAC to correct, but it is highly unlikely

tester
11-02-2011, 06:30 PM
Thanks for the reply.