which example provide lipsync as show below

[GeorgeS2019]

godotengine/godot-proposals#9718 (comment)

• chunk_to_lipsync
• read_visemes
  

  two-voip-godot-4/src/audio_effect_opus_chunked.cpp

  Lines 65 to 66 in 35d7dd3

  	ClassDB::bind_method(D_METHOD("chunk_to_lipsync", "resampled"), &AudioEffectOpusChunked::chunk_to_lipsync);
  	ClassDB::bind_method(D_METHOD("read_visemes"), &AudioEffectOpusChunked::read_visemes);

two-voip-godot-4/example/radiomqtt/radiomqtt.gd

Lines 35 to 36 in 35d7dd3

	var visemes = [ "sil", "PP", "FF", "TH", "DD", "kk", "CH", "SS", "nn", "RR", "aa", "E", "ih", "oh", "ou", "LA" ]

read_visemes()

two-voip-godot-4/example/radiomqtt/radiomqtt.gd

Lines 275 to 280 in 35d7dd3

	if viseme != -1:
	var vv = audioopuschunkedeffect.read_visemes();
	for i in range($HBoxVisemes.get_child_count()):
	$HBoxVisemes.get_child(i).size.y = int(50*vv[i])
	#print(" vvv ", vv[-2], " ", vv[-1])
	$HBoxVisemes.visible = true

[goatchurchprime]

There are two releases of the GDExtension addon you can download and copy into your Godot project, one with and one without (where the lipsync functions do nothing): https://github.com/goatchurchprime/two-voip-godot-4/releases/tag/v3.1

If you are on Windows you will need to copy the OVRLipSync.dll into the same directory as the Godot.exe you are running it from. I don't know how to fix this: #18

The Linux module in addons/twovoip_lipsync does no lipsync, but it is useful for when I am deploying from Linux to Android, though #15 is still an issue.

You might also find this repo interesting: https://github.com/goatchurchprime/lipsync

Does this answer your questions?