Automatic Audio Timing Advance For Lip Synchrony

Tangible, non-transitory computer-readable media comprising program instructions, wherein the program instructions, when executed by one or more processors, cause a network device to:

• for a media stream comprising audio data and video data associated with the audio data, generate audio playback timing for individual frames of the audio data, wherein the audio playback timing comprises, for an individual frame of audio data, an indication of a corresponding future time that is within a first duration of time from a current clock time of the network device, and wherein the corresponding future time for the individual frame specifies a time at which one or more playback devices are to play the individual frame of audio data in lip-synchrony with the video data associated with the audio data, wherein the first duration of time is based at least in part on an amount of time required for an individual frame of audio data to transit a display device positioned logically between the network device and the one or more playback devices, and wherein the display device is configured to display the video data associated with the audio data;
• and
• transmit the audio playback timing and the audio data to the one or more playback devices for playback according to the audio playback timing.

A method performed by a network device for managing lip synchrony between audio and video playback, the method comprising:

• for a media stream comprising audio data and video data associated with the audio data, generating audio playback timing for individual frames of the audio data, wherein the audio playback timing comprises, for an individual frame of audio data, an indication of a corresponding future time that is within a first duration of time from a current clock time of the network device, and wherein the corresponding future time for the individual frame specifies a time at which one or more playback devices are to play the individual frame of audio data in lip-synchrony with the video data associated with the audio data, wherein the first duration of time is based at least in part on an amount of time required for an individual frame of audio data to transit a display device positioned logically between the network device and the one or more playback devices, and wherein the display device is configured to display the video data associated with the audio data;
• and
• transmitting the audio playback timing and the audio data to the one or more playback devices for playback according to the audio playback timing.