Abstract
Testing audio/video synchronization (AV-sync) of streaming media playback has typically been done either via human observation, which is subjective, or with tooling that provides only point-in-time measurements (e.g., through periodic flash-beeps). Current techniques lack the high fidelity of continuous measurement through the entire playback of streaming content. This disclosure describes techniques to measure audio-video synchronization of livestream and offline advertising-based video on demand (AVOD) content (or any streaming video content) in a continuous, real-time manner, e.g., once every 1-2 milliseconds. A hardware device, referred to as an AV-synchronizer, is affixed to a display panel and reads a type of media content tailored specifically to measure AV-sync. The AV-synchronizer reads two signals, one from the video display on the panel, and another from the audio output. The video and audio signals are captured by the AV-synchronizer and correlated against each other to determine the amount of asynchronization.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Newell, Nick, "Measuring Audio-Video Synchronization via Signal Analysis", Technical Disclosure Commons, (June 05, 2024)
https://www.tdcommons.org/dpubs_series/7076