Calculating Lip Sync Error

One way to determine the lip sync error (or AV sync error) of a device or AV system is to first measure its audio latency and video latency and then calculate the lip sync error based on these measurements.

Audio and video latency can vary based on audio/video signal format and sink device settings, so it is important to keep these identical when measuring audio latency and then video latency. For example, it would be incorrect to calculate lip sync error of a TV by measuring it’s “game mode” video latency and “movie mode” audio latency.

Lip Sync Error Calculator

Lip sync error can be calculated by subtracting audio latency from video latency.

Lip Sync Error: (Please enter latency values)

Audio that leads video is more noticeable than video that leads audio! Visit Acceptable Audio Latency and Lip Sync Error for more details.

Last updated on July 12th, 2022.