Granted Patent B1

US 12,375,726 · App. 18/342,406 · Granted Jul 29, 2025

Inventors: Byeongdoo Choi (Irvine, CA); Christopher Andrew Segall (Camas, WA); Kiran Mukesh Misra (Camas, WA)

Assignee: Amazon Technologies, Inc.

H04N19/70H04N19/172H04N19/184

Abstract

Claims (35)

1. A computer-implemented method comprising:

receiving a video at a content delivery service;

encoding, by the content delivery service, the video into an encoded video;

generating, by the content delivery service, at least one open bitstream unit from the encoded video according to a video coding format that does not utilize a show existing frame syntax element set to one to indicate a frame in a reference picture buffer of a decoder is to be displayed; and

transmitting the at least one open bitstream unit from the content delivery service to the decoder.

2. The computer-implemented method of claim 1 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream is according to the video coding format that utilizes a display order hint to indicate the frame in the reference picture buffer of the decoder is to be displayed.

3. The computer-implemented method of claim 2 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream is according to the video coding format that further utilizes a showable frame syntax element to indicate the frame in the reference picture buffer of the decoder is to be displayed.

4. A computer-implemented method comprising:

receiving a video at a content delivery service;

encoding, by the content delivery service, the video into an encoded video;

generating, by the content delivery service, at least one open bitstream unit from the encoded video without including a show existing frame syntax element to indicate a frame in a reference picture buffer of a decoder is to be displayed; and

transmitting the at least one open bitstream unit from the content delivery service to the decoder.

5. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream utilizes a display order hint to indicate the frame in the reference picture buffer of the decoder is to be displayed.

6. The computer-implemented method of claim 5 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream further utilizes a showable frame syntax element to indicate the frame in the reference picture buffer of the decoder is to be displayed.

7. The computer-implemented method of claim 5 , wherein the display order hint is a value within a range that is less than a total number of frames in the video.

8. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded video is without including a showable frame syntax element.

9. The computer-implemented method of claim 8 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded video is without including a show frame syntax element.

10. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded video is without including a show frame syntax element.

11. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream utilizes a picture order count to indicate the frame in the reference picture buffer of the decoder is to be displayed.

12. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream utilizes a frame identifier to indicate the frame in the reference picture buffer of the decoder is to be displayed.

13. The computer-implemented method of claim 4 , wherein the generating, by the content delivery service, the at least one open bitstream unit from the encoded bitstream utilizes a time stamp to indicate the frame in the reference picture buffer of the decoder is to be displayed.

14. The computer-implemented method of claim 13 , wherein the time stamp is a frame presentation time syntax element.

15. An apparatus comprising:

a coupling to a display; and

a video decoder to:

receive at least one open bitstream unit, of an encoded video, that does not include a show existing frame syntax element that indicates a decoded frame in a reference picture buffer of the video decoder is to be displayed,

generate the decoded frame based on the at least one open bitstream unit of the encoded video,

store the decoded frame in the reference picture buffer of the video decoder,

determine, based on other information available to the video decoder, that the decoded frame in the reference picture buffer of the video decoder is to be displayed, and

transmit the decoded frame from the reference picture buffer of the video decoder to the coupling for displaying on the display.

16. The apparatus of claim 15 , wherein the other information comprises a display order hint in the at least one open bitstream unit.

17. The apparatus of claim 16 , wherein the display order hint is a value within a range that is less than a total number of frames in the video.

18. The apparatus of claim 15 , wherein the at least one open bitstream unit does not include a showable frame syntax element.

19. The apparatus of claim 15 , wherein the at least one open bitstream unit does not include a show frame syntax element.

20. The apparatus of claim 15 , wherein the other information comprises a frame presentation time syntax element.

Assignments (1)

References Cited (41)