METHOD AND APPARATUS FOR MEASURING AUDIO/VIDEO SYNC DELAY

摘要

A method of determining the delay between an audio and visual signal, the method comprising providing a video signal having a plurality of sequential timestamps visually encoded thereon and providing an audio signal having a corresponding plurality of timestamps audibly encoded thereon, the audio and video signals being synchronised to one another, encoding the audio and video signals to generate digitally encoded audio and video data streams, analysing the encoded video and audio data streams to extract each of the audibly and visually encoded timestamps and measuring any delay between the time of receipt of corresponding video and audio timestamps.