Frame Rate
In short: Frame rate is the number of individual video frames displayed per second, with higher rates producing smoother lip sync output that better captures rapid mouth movements.
About Frame Rate
Frame rate directly impacts how smooth and natural lip sync appears in the final video. Standard video frame rates include 24 fps (film), 30 fps (web/broadcast), and 60 fps (high-motion content). Lip sync models must generate mouth movements for every frame in the output video, meaning higher frame rates require more generated frames and more computational resources.
If the frame rate is too low, rapid speech sounds may not have distinct mouth shapes for each transition, resulting in lip sync that looks choppy or misaligned. Most lip sync tools process at the input video's native frame rate to maintain consistency.
How Frame Rate Connects to Lip Sync
Frame Rate relates to several other concepts in the AI lip sync pipeline: Inference Time , and Codec .
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