Licensing issue about styletts2 HOT 9 CLOSED

Only if the phonemizer library would be changed it needs to be done with GPL, and even in that case only the new library and not the entire project would be GPL licensed.
Using it is no problem

from styletts2.

Hi, unfortunately GPL requires all software that links to it to be also licensed under GPL. It would be amazing to keep this software MIT-licensed, so that's why I suggest switching to deep_phonemizer.

from styletts2.

Hi, unfortunately GPL requires all software that links to it to be also licensed under GPL. It would be amazing to keep this software MIT-licensed, so that's why I suggest switching to deep_phonemizer.

wow what a nightmare, I forgot about that change.
Well it's not enforceable, you can just build a slim wrapper with a "very similar" API and make it interchangebale.
There are ways to call DLL functions from windows command line (same in linux), does that make the console using that and the tool that can universally call DLL functions suddenly GPL violating ?
It's not enforceable. Though I agree that given that nasty "idea" GPL should be avoided when possible.

from styletts2.

I took it from VITS, which is also MIT and uses phonemizer. I didn't know it was actually GPL. How does VITS stay MIT while using phonemizer then?

from styletts2.

Here an example from multi billion USD company: https://github.com/mozilla/TTS
They also use phonemizer but use the Mozilla license.

It's unpleasant to have such legal quirks lingering but if it ever becomes an issue I'm quite sure there are many ways to work around that.

• A wrapper library that people include themselves for example, with exactly the same interface

Of course, if that could be avoided without much work, even better.

from styletts2.

I have searched the whole repository, the phonemizer is used in Demo/*.ipynb and Colab/*.ipynb. The ipynb file is the document and not the code. And the core source code of StyleTTS2 is NOT use any phonemizer.

For GPL we can use it as binary such as gcc, and not to link lib or import. Someone can call espeak-ng binary command to get G2P function, or use speechbrain/soundchoice-g2p vinai/xphonebert-base.

The conclusion is StyleTTS2 use MIT license is totally OK.

from styletts2.

@clcarwin Thanks for your help, I can mark this as solved now.

from styletts2.

Yes, thanks for the clarification!!

from styletts2.

In case anyone's interested, here's a MIT licensed python package of StyleTTS2 (just inference) that uses Gruut as the phoneme converter -- it's still not as good as phonemizers built on espeak but I found it was the best alternative that was MIT licensed.

from styletts2.