ALAC support on Windows

[axeldelafosse]

Hey,

Hope you are doing well.

I built a script to create Traktor stems called Stemgen. It is based on ni-stem and it creates MP4 audio files using ALAC or AAC. But Traktor can't read ALAC stems on Windows. And it really is a shame to be forced to encode lossy audio files to be able to use stems on Windows.

I haven't been able to test this hypothesis yet but I think that this issue is coming from this library.

More context in the forum and on GitHub.

Can you confirm this hypothesis? Happy to help and send a PR if that's the case :)

[P4ran01d]

Still waiting for this to be acknowledged/fixed... it's rather frustrating.

[axeldelafosse]

Yeah, sorry about that...

I'm voicing this issue again on a new thread: https://community.native-instruments.com/discussion/33853/lossless-stems. Traktor Pro 4 is out with stem separation so we might hear a lot more people complaining about this.

[marcrambo]

We do generally support reading alac encoded mp4 files on windows.
We have several alac files that get tested on each commit in the windows CI:

ie:
https://github.com/NativeInstruments/ni-media/blob/master/audiostream/test/test_files/reference_files/sin440.1.44100.44100.s16le.alac.m4a

Could you attach a short file generated by stemgen so we can run some tests with it? It should contain a master track, i.e. the default stream that will be opened.