You have a 3D head model with 15 standard shape keys (Basis, AH, B, CH, D, E, F, G, I, L, M, N, O, R, S, T, U, W, etc.). If your model uses a different phoneme set, check the add-on’s mapping settings.
Installing modern lip-sync extensions is straightforward, though some versions require external dependencies like FFmpeg. auto lip sync blender install