I'm glad you brought that up...:D
When
AccuLips was introduced (actually during testing) the option of other dictionaries was mentioned, but it never came to fruition. There was a test version of a German dictionary, as I recall.
In fact, if you look under
C:\Program Files\Reallusion\iClone 8\Resource\ICTextToSpeech\montreal-forced-aligner\pretrained_models, there's still something for German there...:unsure:
According to RL, the issue was that besides a dictionary you need a language model. This is a specification of how the words in the dictionary map to visemes for the specific language as well as the blend together (simply out).
There was back and forth about it and I still believe it is possible, given that Nvidia can do it with Audio2Face. In other words, the language models are obtainable, but I guess there wasn't much incentive to implement it.
It saddens of course all of us with native languages other than English or an interest in such languages, but such is the situation.
What I tried once is to write a Dutch sentence as it it were mangled English:
76% of original size (was 661x19) - Click to enlarge
The Dutch text is: "Ik wil
AccuLips in het Nederlands. Waarom is dat zo moeilijk?" ("I want
AccuLips in Dutch. Why is that so difficult?")
That is of course quite a lot of work, but currently it's the only way to do it, AFAIK.