Method, system and software product for streaming content

• US 9,654,301 B2
• Filed: 02/13/2007
• Issued: 05/16/2017
• Est. Priority Date: 02/13/2006
• Status: Active Grant

• Current Assignee: Vividas Technologies Pty Limited
• Original Assignee: Vividas Technologies Pty Limited
• Inventors: Lipka, Martin, Winter, David
• Primary Examiner(s): Fan, Shiow-Jy
• Application Number:
  US12/279,111
• Publication Number:
  US 20090319557A1
• Time in Patent Office: 3,745 Days
• Field of Search: 707999102, 707791, 707802, 709231
• CPC Class Codes: H04L 12/1881 with schedule organisation, e.g. priority, sequence management
• CPC Class Codes: H04N 19/436 using parallelised computational arrangements
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 21/2187 Live feed
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/23805 Controlling the feeding rate to the network, e.g. by controlling the video pump
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments

Abstract

The present invention relates to methods and systems for streaming content and in particular, live content. The method includes the steps of: receiving a content stream; periodically encoding the received stream into a sequence of content files to thereby create a plurality of sequential content files; assigning a sequence identifier to each content file; storing the files on a host; delivering a data file to a media player responsive to a request for live content, said data file including information enabling the media player to sequentially and individually request each content file from the host and play the requested content file; and delivering requested content files responsive to each request.

Claims

1. A method for streaming live content, comprising:

receiving a content stream comprising live content;

directing successive portions of the received content stream to an encoder;

sequentially encoding, by the encoder, each portion of the content stream into an encoded content file to obtain a plurality of encoded content files that are sequential while simultaneously receiving newly arrived portions of the content stream, the encoding of each of the encoded content files occurring prior to a request for the respective encoded that content file;

assigning a sequence identifier to each of the encoded content files;

storing the encoded content files on a host with the sequence identifier being recorded in the file name of each of the encoded content files;

delivering a data file to a media player responsive to a request for content, said data file including information enabling the media player to;

sequentially and individually request each of the encoded content files from the host to obtain the content from the content stream, each of the sequential and individual requests using the file name including the encoded content file'"'"'s assigned sequence identifier;

calculate the sequence identifier of, and thereby request, the encoded content file containing the most recently received portion of the content stream at the time of the request, wherein the sequence identifier of the most recently received portion is calculated according to a commencement time, a current time, a frame rate, and a number of frames stored per each of the encoded content files; and

to decode and play the requested content file; and

delivering the requested encoded content files responsive to each of the sequential and individual requests.

2. The method according to claim 1, wherein the data file includes the file name of a first content file, and a network location of the host.

3. The method according to claim 2, wherein the data file includes a network location of one or more additional hosts from which a media player may request a content file, when a previously requested encoded content file does not arrive within a specified timeframe.

4. The method according to claim 1,

wherein the sequence identifier of the last content file in the sequence (S_L) of the requested encoded content files is calculated according to the following formulas:

S_L=F_e/F_block

F_e=t_c/FPs

t_c=t_c−

t_r

wherein the commencement time is represented by (t_c), the current time is represented by (t_r), the frame rate is of the content stored in each content file and is represented by (FPs), and the number of frames stored per each of the encoded content files is represented by (F_block).

5. The method according to claim 1, wherein the host is a web server, streaming content to one or more additional media players coupled to the web server over the Internet.

6. The method according to claim 1, wherein the host is an ingestion system for a content delivery network.

7. The method according to claim 1, wherein the encoding comprises cyclically directing the content stream through two or more encoders.

8. The method according to claim 7, wherein the two or more encoders simultaneously encode different portions of the content stream.

9. The method according to claim 1, wherein a time interval of each of the successive portions is determined based on a real time quality of the content and an efficiency of the encoder.

10. A live content streaming system, comprising:

a processor;

a streaming application executable on the processor and having an encoder; and

a host communicatively coupled to the streaming application,

wherein, the streaming application is configured to;

receive a content stream comprising live content;

direct successive portions of the received content stream to the encoder;

sequentially encode, using the encoder, each portion of the content stream into an encoded content file to obtain a plurality of encoded content files that are sequential while simultaneously receiving newly arrived portions of the content stream the encoding of each of the encoded content files occurring prior to a request for the respective encoded content file;

assign a sequence identifier to each of the encoded content files upon its creation with the sequence identifier being recorded in the file name of each of the encoded content files;

transfer the encoded content files to the host along with a data file including information enabling a media player to;

sequentially and individually request each of the encoded content files from the host to obtain the content from the content stream, each of the sequential and individual requests using the file name including the encoded content file'"'"'s assigned sequence identifier;

calculate the sequence identifier of, and thereby request, the encoded content file containing the most recently received portion of the content stream at the time of the request, wherein the sequence identifier of the most recently received portion is calculated according to a commencement time, a current time, a frame rate, and a number of frames stored per each of the encoded content files; and

to decode and play the requested content file; and

deliver the requested encoded content files responsive to each of the sequential and individual requests.

11. The live content streaming system according to claim 10, wherein the data file includes the file name of a first sequential content file and a network location of the host.

12. The live content streaming system according to claim 10,

wherein the sequence identifier of the last sequential content file in the sequence (S_L) of the requested encoded content files is calculated according to the following formulas:

S_L=F_e/F_block

F_e=t_c/FPs

t_c=t_c−

t_r

wherein the commencement time is represented by (t_c), the current time is represented by (t_r), the frame rate is of the content stored in each content file and is represented by (FPs), and the number of frames stored per each of the encoded content files is represented by (F_block).

13. The live content streaming system according to claim 12, wherein the data file includes a network location of one or more additional hosts from which a media player may request a content file, when a previously requested encoded content file does not arrive within a specified timeframe.

14. The live content streaming system according to claim 10, wherein the host is a web server, streaming content to one or more additional medial players coupled to the web server over the Internet.

15. The live content streaming system according to claim 10, wherein the host is an ingestion system for a content delivery network.

16. The live content streaming system according to claim 10, wherein the content is periodically encoded by cyclically directing the content stream through two or more encoders.

17. The live content streaming system according to claim 16, wherein the encoders simultaneously encode different portions of the content stream.

18. A system, comprising

a microprocessor and a tangible, non-transitory computer-readable medium coupled thereto, wherein the microprocessor receives and executes instructions from the computer-readable medium and wherein the instructions cause the microprocessor to:

receive a content stream comprising live content;

direct successive portions of the received content stream to an encoder;

sequentially encode, by the encoder, each portion of the content stream into an encoded content file to obtain a plurality of encoded content files that are sequential while simultaneously receiving newly arrived portions of the content stream, the encoding of each of the encoded content files occurring prior to a request for the respective encoded content file;

assign a sequence identifier to each of the encoded content files;

store the encoded content files on a host with the sequence identifier being recorded in the file name of each of the encoded content files;

deliver a data file to a media player responsive to a request for content, said data file including information enabling the media player to;

sequentially and individually request each of the encoded content files from the host to obtain the content from the content stream, each of the sequential and individual requests using the file name including the encoded content file'"'"'s assigned sequence identifier;

calculate the sequence identifier of, and thereby request, the encoded content file containing the most recently received portion of the content stream at the time of the request, wherein the sequence identifier of the most recently received portion is calculated according to a commencement time, a current time, a frame rate, and a number of frames stored per each of the encoded content files; and

to decode and play the requested content file; and

deliver the requested encoded content files responsive to each of the sequential and individual requests.

19. The program according to claim 18, wherein a time interval of each of the successive portions is determined based on a real time quality of the content and an efficiency of the encoders.

20. A system, comprising:

one or more microprocessors;

an encoder; and

a microprocessor executable work assignment engine that, when executed by the one or more microprocessors in one or more servers, performs live content streaming by;

receiving a content stream comprising live content;

directing successive portions of the received content stream to an encoder;

sequentially encoding, by the encoder, each portion of the content stream into an encoded content file to obtain a plurality of encoded content files that are sequential while simultaneously receiving newly arrived portions of the content stream, the encoding of each of the encoded content files occurring prior to a request for the respective encoded content file;

assigning a sequence identifier to each of the encoded content files;

storing the encoded content files on a host with the sequence identifier being recorded in the file name of each of the encoded content files;

delivering a data file to a media player responsive to a request for content, said data file including information enabling the media player to;

sequentially and individually request each of the encoded content files from the host to obtain the content from the content stream, each of the sequential and individual requests using the file name including the encoded content file'"'"'s assigned sequence identifier;

calculate the sequence identifier of, and thereby request, the encoded content file containing the most recently received portion of the content stream at the time of the request, wherein the sequence identifier of the most recently received portion is calculated according to a commencement time, a current time, a frame rate, and a number of frames stored per each of the encoded content files; and

to decode and play the requested content file; and

delivering the requested encoded content files responsive to each of the sequential and individual requests.