Apple Inc.

Bess C Chan

Dazhong Zhang

Christopher M Garrido

Karthick Santhanam

Xiaosong Zhou

Ming Jin

Patrick Miauton

Eric L Chien

Peikang Song

Xiaoxiao Zheng

Hsi-Jung Wu

Beibei Wang

David L Biderman

Yan Yang

Hang Yuan

Thomas P Devanneaux

Hsien-Po Shiang

Xiaohua Yang

Albert E Keinath

Sudeng Hu

Vikrant Kasarabada

Vu H Chiem

David R Conrad

Gurtej Singh Chandok

Davide Concion

Komei Harada

Giribalan Gopalan

Peter Shiang

Techniques are disclosed for coding video data in which frames from a video source are partitioned into a plurality of tiles of common size, and the tiles are coded as a virtual video sequence according to motion-compensated prediction, each tile treated as having respective temporal location of the virtual video sequence. The coding scheme permits relative allocation of coding resources to tiles that are likely to have greater significance in a video coding session, which may lead to certain tiles that have low complexity or low motion content to be skipped during coding of the tiles for select source frames. Moreover, coding of the tiles may be ordered to achieve low coding latencies during a coding session.

Efficient coding of source video sequences partitioned into tiles

Techniques presented herein provide an improved relay user experience and improved management of scarce computing and network resources as the number of relay endpoints increases. A sourcing endpoint device may generate a media feed, such as video and/or audio feed, representing contribution from a conference participant. The sourcing endpoint device may generate a priority value for the media feed, and the priority value may be transmitted to other members of the relay along with the input feed. Priority values of the different relay participants may be used by other devices, for example, intermediate servers or receiving endpoint devices, to manage aspects of the relay. For example, a relay server may prune streams from select endpoint devices based on relative priority values received from those devices. Alternatively, receiving endpoint devices may alter presentation of received feeds based on their associated priority values.

Media feed prioritization for multi-party conferencing

A device implementing a system for audio-video conferencing using multiple stream identifiers includes a processor configured to receive, from a sending device, indication of a first content stream and a first stream identifier, and indication of a second content stream and a second stream identifier associated. The first content stream and the second content stream correspond to different bit rates of streaming content. The processor is configured to receive, from a receiving device, a request to subscribe to the second content stream, the request including the second stream identifier, and receive, from the sending device, an indication that the second stream identifier has been associated with the first content stream. The processor is configured to forward, to the receiving device, the first content stream based on the request to subscribe to the second content stream and on the indication that the second stream identifier has been associated with the first content stream.

Multiway audio-video conferencing

Growing community of inventors

Sunnyvale, CA, United States of America

Bess C Chan