Microsoft Technology Licensing, LLC

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Microsoft Corporation

Chun-Wei Chan

Stacey Spears

Chuang Gu

William Chen

Thomas W Holcomb

Yaming He

Florin Folta

Chih-Lung Lin

Ming-Chieh Lee

Sanjeev Mehrotra

Mei-Hsuan Lu

King Wei Hor

Satya Sasikanth Bendapudi

Techniques are described for encapsulating AV1 encoded video data within NAL units. For example, the NAL units can be H.264 or HEVC NAL units. Encapsulation can comprise using a reserved NAL unit type. For example, an open bitstream unit comprising AV1 encoded video data can be encapsulated within a NAL unit using a reserved NAL unit type. The NAL unit can be packetized for delivery to another computing device via a computer network.

AV1 codec for real-time video communication

An image and video compression method includes defining one or more encoding quality patterns, the one or more encoding quality patterns each have pre-determined areas of quality adjustment, the pre-determined areas of quality adjustment including one or more pre-defined regions of lower quality adjustment and one or more pre-defined regions of higher quality adjustment; receiving a frame associated with content to be encoded; selecting one of the one or more encoding quality patterns; processing the frame via an encoder, the processing using the selected one of the one or more encoded quality patterns; and producing a final output of an encoded bit.

Perceptual multimedia encoding system and method with pre-defined encoding quality patterns

A multiple bitrate (MBR) video encoding management tool utilizes available processing units for parallel MBR video encoding. Instead of focusing only on multi-threading of encoding tasks for a single picture or group of pictures (GOP), the management tool parallelizes the encoding of multiple GOPs between different processing units and/or different computing systems. With this parallel MBR video encoding architecture, different GOPs can be encoded in parallel. To facilitate such parallel encoding, data dependencies between GOPs are removed. The management tool can adjust the number of GOPs to encode in parallel on a computing system so as to favor parallelism of encoding for different GOPs at the expense of parallelism of encoding inside a GOP, or vice versa, and thereby set a suitable balance between encoding latency and throughput.

Parallel multiple bitrate video encoding to reduce latency and dependences between groups of pictures

A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded bit rate to vary subject to a peak bit rate and average bit rate constraints for higher quality streams, while a bottom bit rate stream is encoded to achieve a constant chunk rate. The video encoding system also dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming.

Multiple bit rate video encoding using variable bit rate and dynamic resolution for adaptive video streaming

A video encoder uses previously calculated motion information for inter frame coding to achieve faster computation speed for video compression. In a multi bit rate application, motion information produced by motion estimation for inter frame coding of a compressed video bit stream at one bit rate is passed on to a subsequent encoding of the video at a lower bit rate. The video encoder chooses to use the previously calculated motion information for inter frame coding at the lower bit rate if the video resolution is unchanged. A multi core motion information pre-calculation produces motion information prior to encoding by dividing motion estimation of each inter frame to separate CPU cores.

Video encoding using previously calculated motion information

A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded resolution to vary based, at least in part, on motion complexity. The video encoding system dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming. Motion complexity may be considered separately, or along with spatial complexity, in making the resolution decision.

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Chun-Wei Chan