A method includes encoding, at a mobile device having a camera, a first portion of a media stream captured by the camera based on an encoding parameter. The method also includes sending the encoded first portion of the media stream from the mobile device to a computing device via a network connection. The method further includes detecting a change in available network bandwidth of the network connection. The method includes automatically adjusting the encoding parameter in response to the change in the available network bandwidth. The method also includes encoding a second portion of the media stream based on the adjusted encoding parameter and sending the encoded second portion of the media stream from the mobile device to the computing device.

Adjusting encoding parameters at a mobile device based on a change in available network bandwidth

In a method for transmitting video for a display panel between a transmitter in electronic communication with a receiver over a wireless communication channel, the method includes: receiving, by a transmitter, a data signal from a data source; receiving, by the transmitter, a return signal from a receiver; selecting, by the transmitter based on at least one of channel quality, video quality, codec requirements, or data rate requirements, a profile from among a plurality of profiles each comprising one or more parameters for transmitting the data signal to the receiver, the plurality of profiles comprising one or more profiles corresponding to transmission of uncompressed video data and one or more profiles corresponding to transmission of compressed video data; and transmitting, by the transmitter, the data signal to the receiver according to the selected profile for display on the display panel

System and method for electronic data communication

Various embodiments are described herein for methods and systems for operating a video compression system. In one example embodiment, the method of operating a video compression system includes determining an encoding complexity limit for an encoding module within the video compression system, determining signal complexity of an input signal to the video compression system, comparing the encoding complexity limit to the signal complexity at an adaptive scaling module within the video compression system, and if the signal complexity is determined to be greater than the encoding complexity limit, manipulating the resolution of the input signal at the adaptive scaling module to generate an output signal.

Systems and methods for improving video compression efficiency

An embodiment of the invention discloses a method and a device for adjusting the picture quality of video, terminal equipment and a storage medium. The method includes determining whether picture quality adjusting conditions are met by the terminal equipment or not when video playing events are detected; acquiring comment information of the played video if the picture quality adjusting conditionsare met by the terminal equipment; determining corresponding picture adjusting parameters according to the comment information and stored preset adjusting libraries and adjusting the picture quality of the played video according to the picture adjusting parameters. According to the scheme, the method, the device, the terminal equipment and the storage medium have the advantages that the picture quality adjusting flexibility can be improved when the video is played by the terminal equipment, the running efficiency can be improved, and requirements of users can be met.

Method and device for adjusting picture quality of video, terminal equipment and storage medium

Methods and systems are disclosed for calculating and applying a VQ metric which operates during the decoding of compressed video. As such, this metric is appropriate for all formats of compressed video codecs (e.g. MPEG-2, AVC and HEVC.) The VQ metric relies on the decoded quantization parameter (Qp) together with analysis of both the compressed and decoded video. As such, the VQ metric does not require a reference video, and is less cumbersome to use for multiple channels, e.g. statistically multiplexed channels.

Quality Metric for Compressed Video

Improved systems and methods of performing multimedia communications over multimedia communications networks, in which video data senders can maintain high video quality of experience (QoE) levels with increased reliability despite changes in available bandwidths of video data receivers. In the disclosed systems and methods, video encoding parameters employed by the video data senders, including at least the video frame size and/or the video frame rate, can be dynamically adapted to the available bandwidths of the video data receivers, taking into account possible effects of spatial scaling and/or temporal scaling of video frames on the resulting video QoE.

Efficient approach to dynamic frame size and frame rate adaptation

Systems and methods of media servers for estimating the video quality of experience (QoE) of human viewers of video content or communications at video receivers. With these systems and methods, a media server can collect, within a plurality of predetermined time windows synchronized in time, operational parameters of ingress and egress networks over which such video content or communications can be transmitted, as well as coding parameters of a video decoder and a video encoder within the media server. Having collected the operational parameters of the ingress network and egress network and the coding parameters of the video decoder and video encoder, the media server can determine QoE scores associated with some or all the ingress network, the video decoder, the video encoder, and the egress network, and estimate a resulting video QoE for a human viewer at a video receiver as a predefined combination of the respective QoE scores.

Estimation of video quality of experience on media services

Systems, methods, and techniques for providing video forwarding in real-time video applications involving multiple devices The techniques can be employed in WebRTC videoconferences, taking into account the heterogeneous natures of device display resolutions and networks in which the devices operate The techniques employ a media server including an SFU having an adaptive video transcoder The media server determines whether a benefit to QoE is achieved by performing video transcoding on large video streams produced by the respective devices If a heterogeneity value of available network bandwidths is greater than a predetermined value and CPU/memory resources are available, then the adaptive video transcoder beneficially performs transcoding on the large video streams to produce corresponding small video streams, which are selectively forwarded to devices having low available network bandwidths By providing an SFU with an adaptive video transcoder, improvements in the general QoE of devices in a videoconference can be achieved

Kyeong Ho Yang

Papers

Efficient approach to dynamic frame size and frame rate adaptation

Estimation of video quality of experience on media services

Systems and methods of video forwarding with adaptive video transcoding capabilities