Philips 32PFL8605K User Manual page 297

4.5.5 Audio to Video sync
With a Home Theatre System (HTS) connected to the TV,
the picture on TV and the sound from the HTS should be
synchronized. A mismatch is visible in scenes with people
talking. When they finish sentences before their lips stop
moving.
HDMI-ARC
Latest Home Theatre Systems with built-in disc players
adjust the audio to video sync automatically when they are
connected to the HDMI-ARC connections (HDMI - Audio
Return Channel).
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