AES E-Library

Audio-Video Synchronization for Post-Production over Managed Wide-Area Networks

A persistent challenge with enabling remote collaboration for cinema post-production is synchronizing audio and video assets. This paper details efforts to guarantee that the sound quality and audio-video synchronization over networked collaborative systems will be measurably the same as that experienced in a traditional facility. This includes establishing a common word-clock source for all digital audio devices on the network, extending transport control and time code to all audio and video assets, adjusting latencies to ensure sample-accurate mixing between remote audio sources, and locking audio and video playback to within quarter-frame accuracy. We will detail our instantiation of these techniques at a demonstration given in December 2009 involving collaboration between a film editor in San Diego and a sound designer in Marin County, California.

Authors: Brock, Nathan; Daniels, Michelle; Morris, Steve; Otto, Peter
Affiliations: Skywalker Sound, Marin County, CA, USA; University of California at San Diego, La Jolla, CA, USA(See document for exact affiliation information.)
AES Convention:128 (May 2010) Paper Number:8040 Import into BibTeX
Subject:Network, Internet, and Broadcast Audio

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 128Papers)   /128/8040.pdf

Start a discussion about this paper!