If you have zero budget, download and the Rhubarb Live importer. You will have functional, convincing lip sync in under 5 minutes.
If you are a professional, invest in or learn the NVIDIA pipeline for emotion-driven speech. auto lip sync blender
In the world of 3D animation, few tasks are as notoriously time-consuming as lip syncing. Manually sculpting phonemes (mouth shapes) for every syllable of a dialogue track can take hours, if not days, for just a few seconds of footage. For indie filmmakers, YouTubers, and game developers working alone, this bottleneck often kills projects before they start. If you have zero budget, download and the