Sync It – Audio/Video Sync Box

LEDs increment at a rate of 1 every frame (40 or 33ms), a beep is precisely timed to the start of the zero frames white LED. When viewed on a monitor or EVS playback, if the beep coincides with the red LEDs, sound is early, if green sound is late. The OLED displays the audio-video offset in frames.

LEDs increment at a rate of 1 every 1/2 frame (20ms), the increased speed improves the precision of the sync measurement, and is ideal for 4k/UHD use. In 25fps mode, OLED display shows audio-video offset in milliseconds.