System and method for adaptive intra refresh rate setting in a video encoder

An article comprising a non-transitory computer readable storage medium having instructions thereon which when executed by a computing platform result in execution of a video encoding method, comprising:

• computing channel induced distortion values at multiple intra refresh rates for a coded video frame as a function of channel loss and spatiotemporal content;
• computing source coding distortion values at the multiple intra refresh rates for the coded video frame as a function of the spatiotemporal content and an operating bit-rate;
• selecting an intra refresh rate value for one or more video frames subsequent to the encoded video frame as a function of the sum of the corresponding computed channel induced distortion values and the source coding distortion values;
• and
• encoding the one or more video frames using the selected intra refresh rate value.

A video encoder, comprising:

• a video encoding module;
• and
• a refresh rate selection module coupled to the video encoding module, wherein the refresh rate selection module comprises:
• a source coding distortion module to receive bit consumption information at an operating bit-rate and spatiotemporal content attributes from the video encoding module and compute source coding distortion values at multiple intra refresh rates for a coded video frame as a function of the received spatiotemporal content attributes and bit consumption information at the operating bit-rate;
• a channel induced distortion module to receive channel loss information from one or more receivers and video frame level error propagation estimates from the video encoding module and compute channel induced distortion values at multiple intra refresh rates for the coded video frame as a function of the received channel loss information and spatiotemporal content having the video frame level error propagation estimates;
• and
• an intra refresh rate selection unit to select an intra refresh rate value for one or more video frames subsequent to the encoded video frame as a function of the sum of the corresponding computed channel induced distortion values and the source coding distortion values, wherein the video encoding module encodes the one or more video frames using the selected intra refresh rate value.