Systems and methods for encoding video content

• US 10,148,989 B2
• Filed: 06/15/2016
• Issued: 12/04/2018
• Est. Priority Date: 06/15/2016
• Status: Active Grant

• Current Assignee: Sonic IP Incorporated (Endeavor Group Holdings Inc.)
• Original Assignee: DivX, LLC (f/k/a DivX CF Holdings LLC) (SoftBank Group Corp.)
• Inventors: Amidei, William David, Shivadas, Abhishek, Wu, Kevin Dean-Yong
• Primary Examiner(s): Nano, Sargon N
• Application Number:
  US15/183,562
• Publication Number:
  US 20170366833A1
• Time in Patent Office: 902 Days
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04N 21/234363 by altering the spatial resolution, e.g. for clients with a lower screen resolution
• CPC Class Codes: H04N 21/234372 for performing aspect ratio conversion
• CPC Class Codes: H04N 21/234381 by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/26258 for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6379 directed to encoder , e.g. for requesting a lower encoding rate
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments

Abstract

Systems and methods for encoding a plurality of alternative streams of video content using multiple encoders in accordance with embodiments of the invention are disclosed. An encoding system includes multiple encoders. Each of the encoders receives a source stream of video content that is divided into portions. Each of the encoders generates portions of the plurality of alternative streams from the portions of the source stream. The portions of the alternative streams generated by a particular encoder are stored in a container for the particular encoder. Each encoder also generates index information for the portion of the alternative stream generated by the encoder that is stored in a manifest for the encoder.

Claims

1. A method for encoding a plurality of alternative streams of video content from a source stream of video content using a plurality of encoders in an encoding system, the method comprising:

receiving a plurality of portions of a source stream of video content in each of a plurality of encoders in the encoding system;

wherein the plurality of encoders include N encoders where N is an integer;

wherein the plurality of portions of the source streams includes greater than N portions;

assigning each of the N encoders an Mth encoding order where M is an integer from 1 to N;

determining the Mth portion of the source stream received in each Mth one of the N encoders and every Nth portion received thereafter from the source stream as a set of portions of the source stream for the Mth encoder to encode in each of the N encoders;

encoding a portion of the plurality of alternative streams in each of the plurality of encoders using the determined sets of portions of the source stream received in each of the plurality of encoders;

storing the portion of the plurality of alternative streams encoded by each particular one of the plurality of encoders in a container for the particular one of the encoders;

generating index information for the portion of the alternative streams encoded by each particular one of the plurality of encoders; and

storing the index information in a manifest for the portion of the plurality of alternative streams generated by each of the particular encoders in a manifest of the particular one of the plurality of encoders.

2. The method of claim 1 wherein the portion of the alternative streams encoded by each of the plurality of encoders is one of the plurality of alternative streams and the method further comprises:

receiving each of the plurality of portions of the source stream in each of the plurality of encoders;

encoding a segment of an alternative stream from each of the plurality of portions of the source streams to generate a plurality of segments of the alternative stream in each of the plurality of encoders where each particular alternative stream generated by each particular one of the plurality of encoders has a particular set of parameters;

generating index information for each of the plurality of segments generated by a particular one of the plurality of encoders in each particular one of the plurality of encoders; and

storing the index information generated by each particular one of the plurality of encoders in a manifest for the particular one of the plurality of encoders to generate a plurality of manifests.

3. The method of claim 2 wherein an alternative stream from the plurality of alterative streams generated by a particular one of the plurality of encoders has a particular maximum bitrate as a parameter.

4. The method of claim 2 wherein at least two alternative streams from the plurality of alternative streams generated by different ones of the plurality of encoders have a same maximum bitrate and at least one other parameter that is different.

5. The method of claim 4 wherein the at least one other parameter is selected from a group of parameters consisting of aspect ratio, frame rate, and resolution.

6. The method of claim 1:

wherein the encoding of a portion includes encoding each portion in the set of portions from the source stream of the Mth encoder into plurality of segments where each of the plurality of segments is a segment in one of the plurality of alternative streams in each of the N encoders;

wherein the generating of the index information includes generating index information for each of the plurality of segments generated for each of the portions from the set of portions of the Mth encoder in each of the N encoders; and

wherein the storing of the index information includes storing the index information for each of the plurality of segments generated from each portion in the set of portions by the Mth encoder in a manifest for the Mth encoder using each of the N encoders.

7. The method of claim 6 further comprising discarding each of the portions from the plurality of portions that is not in the set of portions for the Mth encoder in each of the N encoders.

8. An encoding system for encoding a plurality of alternative streams of video content from a source stream of video content comprising:

at least one processor;

memory accessible by the at least one processor; and

instructions stored in the memory that when read by the at least one processor direct the processor to;

provide a plurality of encoders where each of the plurality of encoders is directed to;

receive a plurality of portions of a source stream of video content;

wherein the plurality of encoders include N encoders where N is an integer;

wherein the plurality of portions of the source streams includes greater than N portions;

assign each of the N encoders an Mth encoding order where M is an integer from 1 to N;

determine the Mth portion of the source stream received in each Mth one of the N encoders and every Nth portion received thereafter from the source stream as a set of portions of the source stream for the Mth encoder to encode in each of the N encoders;

encode a portion of the plurality of alternative streams using the determine sets of portions of the source stream;

store the portion of the plurality of alternative streams encoded in a container particular to the encoder;

generate index information for the portion of the alternative streams encoded by the encoder; and

store the index information in a manifest for the portion of the plurality of alternative streams generated by the encoder.

9. The system of claim 8 wherein the portion of the alternative streams encoded by each of the plurality of encoders is one of the plurality of alternative streams and each of the plurality of encoders is further directed to:

receive each of the plurality of portions of the source stream;

encode a segment of a particular alternative stream from each of the plurality of portions of the source streams to generate a plurality of segments of the alternative stream where each particular alternative stream has particular parameters;

generate index information for each of the plurality of segments generated; and

store the index information generated in a manifest for the particular one of the plurality of encoders.

10. The system of claim 9 wherein the alternative stream from the plurality of streams generated by a particular one of the plurality of encoders has a particular maximum bitrate as a parameter.

11. The system of claim 9 wherein at least two of the alternative streams from the plurality of alternative streams generated by different ones of the plurality of encoders have a same maximum bitrate and at least one other parameter that is different.

12. The system of claim 11 wherein the at least one other parameter is selected from a group of parameters consisting of aspect ratio, frame rate, and resolution.

13. The system of claim 8 wherein each of the N encoders is further directed to:

encode each portion in the set of portions from the source stream of the into plurality of segments where each of the plurality of segments is a segment in one of the plurality of alternative streams;

generate index information for each of the plurality of segments generated for each of the portions from the set of portions of the Mth encoder; and

store the index information for each of the plurality of segments generated from each portion in the set of portions in a manifest for the Mth encoder.

14. The system of claim 13 wherein each of the N encoders is further directed to discard each of the portions from the plurality of portions that is not in the set of portions for the Mth encoder.