Google Inc.

Yong Lei

Ke Yang

Systems and techniques for testing audio-video synchronization using one or more timestamps are presented. On a media sender end, a media stream with a video stream and an audio stream is generated. A matrix barcode timestamp is added onto a video frame of the video stream at a particular time. Furthermore, a tone timestamp is embedded into the audio stream at the particular time. Additionally, on a media receiver end, a modified media stream is received. For example, the video stream with the matrix barcode timestamp at the particular time and the audio stream with the tone timestamp at the particular time are received. The matrix barcode timestamp is decoded to determine a first time value and the tone timestamp is decoded to determine a second time value. The first time value is compared with the second time value to determine synchronization of the video stream and the audio stream.

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Cupertino, CA, United States of America

Yong Lei