An AI avatar can match every syllable and still feel wrong. This 94-second explainer looks beyond the mouth: expression, head movement and gestures. Using labelled official Kandinsky S2V examples and original animated diagrams, I explain the photo + speech + prompt workflow, five-second chunks and visual memory—then show a simple two-pass viewing test. 00:00 Lip sync is only the beginning 00:15 Photo + speech + prompt 00:26 Four things to watch 00:39 Five-second chunks and visual memory 00:54 What selected demos can—and cannot—show 01:09 The two-pass test and takeaway At 01:21, three seconds of silence are intentional. The same excerpt then repeats with its original audio at 01:24. Elsewhere, the English narration is commentary, not a dub of the example characters. Sources and credits: • Official demonstration excerpts: Kandinsky Lab https://kandinskyavatar.github.io/ • Paper: Kandinsky S2V 1.0: Audio-Driven Avatar Video Generation https://arxiv.org/abs/2610.19290 • Code and implementation details: https://github.com/kandinskylab/kandinsky-s2v This is an explanatory film, not an independent model benchmark. The examples were selected by the researchers; I did not run Kandinsky S2V for this video. Realistic example footage is AI-generated. Narration is synthetic. The diagrams, editing and quiet background score were created for this production. The conceptual cover artwork is AI-generated, not a Kandinsky result. Produced with Framewright: https://github.com/markoblogo/framewright Which detail breaks the illusion first for you: lips, expression, head movement, or hands? #AIAvatars #Kandinsky #GenerativeAI