Cisco Technology, Inc.

Greg Harald Hakonsen

Geir Sandbakken

Michael Anthony Ramalho

Paul G Bright-Thomas

Marcello Caramma

Jan Wegger

William Geoffrey Prior

Daniel George Wing

Herbert Michael Wildfeuer

Rahul G Patel

Pål-Erik Martinsen

Dan Tan

Jorgen Olsen

Pål-Erik S Martinsen

In one embodiment, a device in a network sends a long term reference frame of a video stream to one or more nodes in the network using a reliable transport mechanism. Subsequent to sending the long term reference frame, the device sends a sequence of regular frames of the video stream to the one or more nodes using an unreliable transport mechanism, whereby a frame in the sequence is derived from a directly prior frame in the sequence. The device identifies an expiration of a wait time from when the long term reference frame was first sent. The device sends a regular frame derived from the long term reference frame via the unreliable transport mechanism after the expiration of the wait time and subsequent to sending the sequence of regular frames.

Large scale media switching: reliable transport for long term reference frames

Presented herein are downstream recovery (error correction) techniques for an aggregated/consolidated media stream. In one example, a consolidated media stream that includes source media packets from one or more sources is sent to one or more downstream receiving devices. Based on the source media packets, one or more self-describing recovery packets for downstream error correction of the source media packets are generated. The self-describing recovery packets include a mapping to the source media packets used to generate the self-describing recovery packets, thereby avoiding the addition of error correction information in the consolidated media stream. The one or more self-describing recovery packets are sent to each of the downstream receiving devices as a separate stream.

Self-describing error correction of consolidated media content

Large source data packets having large packet sizes and small source data packets having small packet sizes that are smaller than the large packet sizes are received. The small source data packets and the large source data packets are sent to a receiving device without forward error correction (FEC). The small source data packets are aggregated into a container packet having a header configured to differentiate the container packet from the large source data packets and the small source data packets. The large source data packets and the container packet are encoded with forward error correction to produce FEC-encoded packets to enable forward error correction of the large source data packets and the container packet at the receiving device. The FEC-encoded packets are sent to the receiving device.

Efficient error correction that aggregates different media into encoded container packets

A STUN message is received at a router device in a network from a client device in the network along a network path. The STUN message is evaluated for information that indicates to the router device to modify media that is subsequently sent along the network path. If the evaluating indicates that the router device is to modify the media, the media is modified in accordance with information in the STUN message that indicates attributes of the network.

Resilient video encoding control via explicit network indication

In one embodiment, a decoder or transcoder of a video conference network receives the first video stream and an indication of the ratio of the spatial-to-temporal resolution of the tuning of the encoding. The behavior of the decoder or transcoder is set based on the indication of the ratio. The behavior is for use of the first video stream.

Content message for video conferencing

Rich media status and feedback for devices and infrastructure components using in path signaling

Growing community of inventors

Sokna, Norway

Greg Harald Hakonsen