System and method for splicing media files

• US 10,459,943 B2
• Filed: 02/18/2016
• Issued: 10/29/2019
• Est. Priority Date: 01/20/2009
• Status: Active Grant

• Current Assignee: Imagine Communications Limited (Gores Broadcast Holdings LLC)
• Original Assignee: Imagine Communications Limited (Gores Broadcast Holdings LLC)
• Inventors: Hosur, Prabhudev I., Nguyen, Cuong T., Brickey, Jonathan R.
• Primary Examiner(s): Biagini, Christopher
• Application Number:
  US15/046,595
• Publication Number:
  US 20160162558A1
• Time in Patent Office: 1,349 Days
• CPC Class Codes: G06F 16/258 Data format conversion from or to a database
• CPC Class Codes: G06F 16/44 Browsing; Visualisation therefor
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/70 Media network packetisation
• 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: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion

Abstract

A method comprising receiving a request for media content from a client, accessing a plurality of source files associated with the requested media content based on the request, wherein the plurality of source files comprise the media content in one or more source formats, and generating a portion of a plurality of target files based on the plurality of source files. The method further comprising generating an auxiliary file for the generated portion of the plurality of target files to facilitate transmission of the generated portion of the plurality of target files to the client and transmitting to the client as a seamless media transmission the generated portion of the plurality of target files, wherein the portion of the plurality of target files are transmitted to the client simultaneously with generation of another portion of the plurality of target files and a corresponding auxiliary file.

Claims

1. A method for processing media content, comprising:

receiving a request for media content from a client;

accessing a plurality of source files associated with the requested media content based on the request, wherein the plurality of source files comprise at least the requested media content in one or more source formats, wherein each of the plurality of source files comprise a plurality of media frames and media parameter data interspersed between the plurality of media frames;

generating a first portion and a second portion of a target file based on the plurality of media frames, wherein the first and second portions comprise the requested media content;

estimating one or more characteristics of the target file based on the media parameter data interspersed between the plurality of media frames and a target format associated with the request;

generating media information for the target file based on the estimated characteristics of the target file;

transmitting the media information to the client to configure the client for receiving the first and second portions as a seamless media transmission; and

transmitting the first and second portions of the target file to the client as the seamless media transmission based on the media information to fulfill the request for the media content from the client.

2. The method of claim 1,

wherein the plurality of media frames comprise one of a plurality of video frames, a plurality of audio frames, and a combination thereof,

the method further comprising time stamping the plurality of video and audio frames with a time stamp, and

wherein the estimating the one or more characteristics of the target file comprises:

estimating a frame size for each frame in the target file; and

estimating an interleaving format of audio and video frames in the target format.

3. The method of claim 2, further comprising:

determining an estimated location for each audio and video frame in the target file based on the time stamp for each video and audio frame, the estimated frame size for each frame in the target file and the estimated interleaving format of audio and video frames in the target format; and

generating the target file associated with the request based on the estimated location for each audio and video frame in the target file.

4. The method of claim 3, wherein the media information contains the estimated location for each audio and video frame in the target file.

5. The method of claim 1,

wherein the plurality of source files include a first source file comprising the requested media content in a first source format,

wherein the first source format is different from the target format, and

wherein generating the target file comprises:

modifying content in the first source file from the first source format to the target format; and

writing the modified content to a first target file associated with the first source file.

6. The method of claim 1, wherein estimating one or more characteristics of the target file comprises:

estimating one or more characteristics of a first source file of the plurality of source files;

extracting data from a second source file of the plurality of source files; and

estimating one or more characteristics of the target file based on the estimated characteristics of the first source file and the data extracted from the second source file.

7. A method, comprising:

receiving a request for media content from a client;

accessing a plurality of source files associated with the requested media content based on the request, wherein the plurality of source files comprise the media content in one or more source formats;

generating a first portion of a plurality of target files based on the plurality of source files, wherein the first portion of the plurality of target files comprises the media content in a target format;

generating a first auxiliary file for the first portion of the plurality of target files, wherein the first auxiliary file comprises session information for at least initiating a transmission of the first portion of the plurality of target files to the client;

initiating a communication session with the client based on the session information of the first auxiliary file;

transmitting to the client the first portion of the plurality of target files in response to initiating the communication session without transmitting the first auxiliary file to the client to fulfill the request for the media content;

generating a second portion of the plurality of target files based on the plurality of source files, wherein the second portion of the plurality of target files comprises the media content in the target format;

generating a second auxiliary file for the second portion of the plurality of target files, wherein the second portion of the plurality of target files and the second auxiliary file are generated during a transmission of the first portion of the plurality of target files to the client to fulfill the request for the media content; and

transmitting to the client the second portion of the plurality of target files without transmitting the second auxiliary file to the client to fulfill the request for the media content such that the first portion and second portion of the plurality of target files are provided as a seamless media transmission.

8. The method of claim 7, further comprising:

splicing the first portion and the second portion of the plurality of target files together to transmit to the client the first portion and the second portion of the plurality of target files as a single media session.

9. The method of claim 7, further comprising:

accessing one or more insert files, wherein the one or more insert files comprise insert content in one or more different formats; and

inserting the one or more insert files between the first portion and the second portion of the plurality of target files based on an associated auxiliary file generated for the one or more insert files.

10. The method of claim 9, wherein the one or more insert files is inserted between the first portion and the second portion of the plurality of target files based on the request.

11. The method of claim 9, further comprising:

determining whether the client is a paying subscriber; and

inserting the one or more insert files between the first portion and the second portion of the plurality of target files based on the determining.

12. The method of claim 9, wherein the one or more insert files corresponds to one or more of different advertisements, copyright notices and voice annotation files.

13. The method of claim 7,

wherein the first auxiliary file comprises timestamps for sub-portions of the first portion of the plurality of target files,

the method further comprising maintaining a temporal continuity between the first portion of the plurality of target files based on the timestamps.

14. The method of claim 7, further comprising:

estimating one or more characteristics of the plurality of target files based on the plurality of source files and the target format associated with the request for the media content;

generating the first portion of the plurality of target files based on the estimated one or more characteristics of the plurality of target files.

15. The method of claim 14, further comprising;

generating media information for the plurality of target files based on the estimated characteristics of the target files; and

transmitting the media information to the client to allow the client to playback the first portion of the plurality of target files while receiving the second portion of the plurality of target files.

16. The method of claim 7, the method further comprising maintaining a temporal continuity of the seamless media transmission based on calculated time-stamps associated with the first and second portions of the plurality of target files.

17. The method of claim 16, wherein the maintaining comprises calculating time-stamps for the first portion and the second portion of the plurality of target files based at least on an amount of media content dropped between the first portion and the second portion of the plurality of target files and a frame rate associated with the target format.

18. A system comprising:

a transcoder comprising;

a transcoder memory configured to store processor instructions;

a transcoder processor configured to execute the processor instructions stored by the transcoder memory and, while executing the processor instructions, configured to;

receive a request for media content from a client;

access a source file based on the request, wherein the source file comprise the media content in a source format;

generate a first portion of a target file based on the source file;

generate a first auxiliary file for the first portion of the target file, wherein the first auxiliary file comprises session information for at least initiating a transmission of the first portion of the target file to the client;

generate a second portion of the target file based on the source file; and

generate a second auxiliary file for the second portion of the target file, wherein the second portion of the target file and the second auxiliary file are generated during a transmission of the first portion of the target file to the client to fulfill the request for the media content;

a streamer comprising;

a streamer memory configured to store processor instructions; and

a streamer processor configured to execute the processor instructions stored by the streamer memory and, while executing the processor instructions, configured to;

initiate a communication session with the client based on the session information of the first auxiliary file;

transmit to the client the first portion of the target file in response to initiating the communication session without transmitting the first auxiliary file to the client to fulfill the request for the media content; and

transmit to the client the second portion of the target file without transmitting the second auxiliary file to the client to fulfill the request for the media content such that the first portion and the second portion of the target file are provided as a seamless media transmission.

19. The system of claim 18, wherein the transcoder is further configured to:

estimate one or more characteristics of the target file based on the source file and a target format associated with the request for the media content; and

generate the first portion and the second portion of the target file based on the estimated one or more characteristics of the target file.

20. The system of claim 19,

wherein the transcoder is further configured to:

generate media information for the target file based on the estimated characteristics of the target file; and

wherein the streamer is further configured to;

transmit the media information to the client to allow the client to playback the first portion of the target file while receiving the second portion of the target file.

21. The system of claim 18, wherein the streamer is further configured to:

splice the first portion and the second portion of the target file together to transmit to the client the first portion and the second portion of the target file as a single media session.

22. The system of claim 18, wherein the transcoder is further configured to:

access one or more insert files, wherein the one or more insert files comprise insert content in one or more different formats; and

insert the one or more insert files between first portion and the second portion of the target file.