Granted Patent B2

US 12,470,615 · App. 18/419,523 · Granted Nov 11, 2025

Inventors: Tristan Schmelcher (Sammamish, WA); William Cyr (Boston, MA); Thomas DeWeese (Boxborough, MA); Nils Krahnstoever (Brookline, MA); Matthew Carson (San Francisco, CA); Pawel Jurczyk (Newton, MA); Thomas Dinger (Waltham, MA); Jeffrey Calow (Arlington, MA)

Assignee: Google LLC

H04L65/613H04L65/612H04N21/2187H04N21/84H04N21/8586

Abstract

Claims (52)

1 . A method comprising:

sending, by a user device, a request pertaining to a plurality of segments of a content stream, the request comprising an identifier associated with the content stream;

receiving, from a content delivery network (CDN), recent segment files corresponding to a recent segment of the plurality of segments of the content stream, the recent segment files comprising a first audio segment file and a first video segment file;

detecting, by the user device, a mismatch between the first audio segment file and the first video segment file;

sending, by the user device, a request for a next segment of the plurality of segments of the content stream;

receiving, from the CDN, next segment files corresponding to the next segment of the plurality of segments of the content stream, the next segment files comprising a second audio segment file and a second video segment file; and

responsive to determining a match between the second audio segment file and the second video segment file, loading the second audio segment file and the second video segment file for playback at the user device.

2 . The method of claim 1 , wherein detecting a mismatch between the first audio segment file and the first video segment file comprises detecting a mismatch between a sequence number of the first audio segment file and a sequence number of the first video segment file.

3 . The method of claim 2 , wherein the sequence number of the first audio segment file is extracted from metadata of the first audio segment file and a sequence number of the first video segment file is extracted from metadata of the first video segment file.

4 . The method of claim 2 , wherein sending the request for the next segment of the plurality of segments of the content stream comprises:

determining a highest sequence number between the sequence number of the first audio segment file and the sequence number of the first video segment file;

incrementing the highest sequence number; and

including the incremented sequence number in the request for the next segment of the plurality of segments of the content stream.

5 . The method of claim 1 , wherein the content stream is a live stream and the request for the next segment is sent by the user device before any next segments are available at the CDN.

6 . The method of claim 5 , wherein the next segment files corresponding to the next segment are received from the CDN after a predetermined duration.

7 . The method of claim 1 , further comprising:

receiving a third video segment file;

determining that the third video segment file matches the first audio segment file; and

loading the first audio segment file and the third video segment file for playback at the user device.

8 . The method of claim 1 , wherein the user device sends requests for segments of the content stream without having a manifest file for the content stream.

9 . The method of claim 1 , wherein the identifier associated with the content stream is a uniform resource locator (URL).

10 . The method of claim 9 , wherein the URL comprises a base URL that corresponds to a first format of a plurality of formats of the content stream, and one or more URL parameters to indicate a sequence number associated with the request pertaining to the plurality of segments of the content stream.

11 . The method of claim 10 , wherein the base URL corresponding to the first format is used to locate a head segment file for the first format, wherein the head segment file corresponds to a most recent segment of the content stream that is available at the CDN.

12 . A system comprising:

a memory; and

processing device, coupled to the memory, to perform operations comprising:

sending, by a user device, a request pertaining to a plurality of segments of a content stream, the request comprising an identifier associated with the content stream;

receiving, from a content delivery network (CDN), recent segment files corresponding to a recent segment of the plurality of segments of the content stream, the recent segment files comprising a first audio segment file and a first video segment file;

detecting, by the user device, a mismatch between the first audio segment file and the first video segment file;

sending, by the user device, a request for a next segment of the plurality of segments of the content stream;

receiving, from the CDN, next segment files corresponding to the next segment of the plurality of segments of the content stream, the next segment files comprising a second audio segment file and a second video segment file; and

responsive to determining a match between the second audio segment file and the second video segment file, loading the second audio segment file and the second video segment file for playback at the user device.

13 . The system of claim 12 , wherein detecting a mismatch between the first audio segment file and the first video segment file comprises detecting a mismatch between a sequence number of the first audio segment file and a sequence number of the first video segment file.

14 . The system of claim 13 , wherein the sequence number of the first audio segment file is extracted from metadata of the first audio segment file and a sequence number of the first video segment file is extracted from metadata of the first video segment file.

15 . The system of claim 14 , wherein sending the request for the next segment of the plurality of segments of the content stream comprises:

determining a highest sequence number between the sequence number of the first audio segment file and the sequence number of the first video segment file;

incrementing the highest sequence number; and

including the incremented sequence number in the request for the next segment of the plurality of segments of the content stream.

16 . The system of claim 12 , the operations further comprising:

receiving a third video segment file;

determining that the third video segment file matches the first audio segment file; and

loading the first audio segment file and the third video segment file for playback at the user device.

17 . The system of claim 12 , wherein the user device sends requests for segments of the content stream without having a manifest file for the content stream.

18 . A non-transitory computer-readable medium containing instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

sending, by a user device, a request pertaining to a plurality of segments of a content stream, the request comprising an identifier associated with the content stream;

receiving, from a content delivery network (CDN), recent segment files corresponding to a recent segment of the plurality of segments of the content stream, the recent segment files comprising a first audio segment file and a first video segment file;

detecting, by the user device, a mismatch between the first audio segment file and the first video segment file;

sending, by the user device, a request for a next segment of the plurality of segments of the content stream;

receiving, from the CDN, next segment files corresponding to the next segment of the plurality of segments of the content stream, the next segment files comprising a second audio segment file and a second video segment file; and

responsive to determining a match between the second audio segment file and the second video segment file, loading the second audio segment file and the second video segment file for playback at the user device.

19 . The non-transitory computer-readable medium of claim 18 , wherein detecting a mismatch between the first audio segment file and the first video segment file comprises detecting a mismatch between a sequence number of the first audio segment file and a sequence number of the first video segment file.

20 . The non-transitory computer-readable medium of claim 19 , wherein the sequence number of the first audio segment file is extracted from metadata of the first audio segment file and a sequence number of the first video segment file is extracted from metadata of the first video segment file.

Assignments (1)

Continuity (5)

References Cited (50)