I had pretty terrible results when I tried English -> Swahili I'm using the Huggingface M4T V2 spaces, it pretty much doesn't work most of the time and I just get English back with a different voice, Expressive on the other hand only has a few languages it seems.
It would be nice if they could layout what exactly is missing in terms of data to make a language work better, while the actual AI bit is out of reach for most of us maybe we could provide more data.
There is also a 60 sec limit and wonder if this is HuggingFace limitation or Seamless?