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Amazon patents smarter video streaming that adjusts picture quality

Amazon has patented a method for streaming video that automatically decides which frames to keep in memory for better picture quality. The system checks network speed and how much the video changes to pick the best frames to use as references for decoding.

Why it mattersThis could help streaming services maintain clearer video on slower internet connections by managing data more efficiently.

In the filing’s own words

Systems and methods to adaptively select long term reference (LTR) frames in order to maintain video quality for streaming video services may comprise an encoder of a video server, a decoder of a client device, and a network. The encoder may determine a frequency for marking frames as LTR frames based on various factors, and may select, encode, and transmit LTR frames based on the determined frequency. In addition, the encoder may determine a content or quality metric of encoded frames, and may select, encode, and transmit LTR frames based on the content or quality metric.

What exactly they claim (claim 1)

1. A method, comprising: determining, by an encoder of a video server, a frequency for marking frames of a video stream as long term reference (LTR) frames based at least in part on a network latency between the encoder and a decoder of a client device and an available number of LTR slots associated with the decoder, the video stream comprising a first set of frames; selecting, by the encoder from the first set of frames, a second set of frames to mark as the LTR frames at the frequency, wherein selecting the second set of frames comprises: determining, by the encoder, a content difference between an encoded frame and an acknowledged LTR frame; determining, by the encoder, that the content difference is greater than a threshold value; and selecting, by the encoder, a next frame of the first set of frames to mark as a next LTR frame based on the content difference; encoding, by the encoder, the first set of frames including the second set of frames; and transmitting, by the encoder via a first communication device, the first set of frames including the second set of frames to the decoder via a network interface.

Facts

Company
Amazon (Amazon Technologies, Inc.)
Official title
Systems and methods to adaptively select long term reference frames for streaming video
Patent number
US12764274B1
Application number
18958541
Filed
Nov 25, 2024
Granted
Oct 13, 2026
Inventors
1
Claims
17

Classified under

H04N 19/105 Electricity & electronicsH04N 19/156 Electricity & electronicsH04N 19/164 Electricity & electronicsH04N 19/172 Electricity & electronicsH04N 19/58 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.