US 12,113,962 B1
Methods and systems for an efficient inter-prediction structure and signaling for low-delay video streaming
Byeongdoo Choi, Irvine, CA (US); Christopher Andrew Segall, Camas, WA (US); and Kiran Mukesh Misra, Camas, WA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Aug. 11, 2022, as Appl. No. 17/886,111.
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/172 (2014.01); H04N 19/577 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/172 (2014.11); H04N 19/577 (2014.11); H04N 19/159 (2014.11)] 21 Claims
OG exemplary drawing
 
4. A computer-implemented method comprising:
receiving a video at a content delivery service;
determining a subset of candidate reference frames from a plurality of frames received of the video;
generating an identification code, for the subset of candidate reference frames, having a multiple-bit format that includes a first bit value to indicate a corresponding candidate reference frame is a reference frame for an input frame from the video and a second bit value to indicate the corresponding candidate reference frame is not the reference frame for the input frame from the video, and, when a bit of the identification code for a first candidate reference frame is set to the first bit value to indicate the first candidate reference frame is a first reference frame for the input frame from the video, an immediately following bit of the identification code being set to the first bit value indicates the first candidate reference frame is also a second reference frame for the input frame from the video;
performing an encode of the input frame of the video based at least in part on the identification code to generate an encoded frame by the content delivery service; and
transmitting the encoded frame from the content delivery service to a viewer device.