Welcome to TVPaint Community forums !

Heard that Windows 10 supports MKV natively. Does TVPaint MKV have decoder/encoder for MKV? MKV is native so that mean TVPaint 11 can also be able encode by MKV?

And does TVPainter 192000 HZ sound support as well. FLAC or TTA? Windows 10 also support Flac natively as well.

Thank you for bringing this information to us .

It may not be possible right now. We need to make the distinction between natively reading FLAC & MKV, and natively exporting into FLAC & MKV.
If Windows 10 allows exporting into FLAC & MKV we may benefit from it.