Ati Technologies Ulc

Zhiqi Hao

Lei Zhang

Gabor Sines

Ihab Amer

Yang Liu

Edward A Harold

Khaled Mammou

Boris Ivanovic

Syed Athar Hussain

Haibo Liu

Ihab M A Amer

Jiao Wang

Ahmed M Abdelkhalek

Andy Sung

Baochun Li

Jinbo Qiu

Ping Chen

Benedict Chien

Stephen Ho

Kai Sun

Stephen A J Bagshaw

Naveed A Gazi

Li Baochun

Systems, apparatuses, and methods for generating a model for determining a quantization strength to use when encoding video frames are disclosed. A pre-encoder performs multiple encoding passes using different quantization strengths on a portion or the entirety of one or more pre-processed video frames. The pre-encoder captures the bit-size of the encoded output for each of the multiple encoding passes. Then, based on the multiple encoding passes, the pre-encoder generates a model for mapping bit-size to quantization strength for encoding video frames or portion(s) thereof. When the encoder begins the final encoding pass for one or more given video frames or any portion(s) thereof, the encoder uses the model to map a preferred bit-size to a given quantization strength. The encoder uses the given quantization strength when encoding the given video frame(s) or frame portion(s) to meet a specified bit-rate for the encoded bitstream.

Content adaptive quantization strength and bitrate modeling

An apparatus and methods for controlling power consumption in video encoding obtain, before motion estimation is performed on an image frame to be encoded, information regarding an amount of the image frame to be encoded that is static with respect to a previously encoded image frame. The apparatus and methods adjust power consumption of the video encoder based on the obtained information regarding the amount of the image frame to be encoded that is static.

Controlling power consumption in video encoding based on information regarding static amount of an image frame

Systems, apparatuses, and methods for reducing latency when consuming an encoded video bitstream in real-time are disclosed. A video encoder encodes a video bitstream and writes chunks of the encoded bitstream to a bitstream buffer. Prior to the encoder completing the encoding of an entire frame, or an entire slice of a frame, a consumer module consumes encoded chunks of the bitstream. In one implementation, to enable pipelining of the consumption with the encoding, the encoder updates a buffer write pointer with an indication of the amount of data that has been written to the bitstream buffer. The consumer module retrieves encoded data from the bitstream buffer up to the location indicated by the buffer write pointer. In this way, the consumer module is able to access and consume encoded video data prior to the encoder finishing encoding an entire frame or an entire slice of the frame.

Low-latency consumption of an encoded video bitstream

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Richmond Hill, Canada

Zhiqi Hao