What breaks lip sync first
Long dialogue, unstable framing, and vague language instructions create the worst lip sync. The model has too many moving parts at once.
Answer
How to improve AI video lip sync
Lip sync usually improves when you shorten the spoken line, specify the target language clearly, and keep framing stable enough for the mouth to remain readable.
Turn this answer into action
The strongest answer is the one you can immediately test. Start from a working prompt library page, then generate your own version in the browser.
Talking avatar prompt
Start from a presenter-style prompt you can immediately test and iterate on.
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Switch here when pronunciation and mouth motion matter more than generic avatar output.
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Read the larger scenario page for explainers, presenter videos, and founder clips.
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