Method and device for streaming a media file over a distributed information system

• US 7,941,553 B2
• Filed: 07/22/2003
• Issued: 05/10/2011
• Est. Priority Date: 10/18/2002
• Status: Active Grant

• Current Assignee: Noblewood IP LLC (IP Edge LLC)
• Original Assignee: International Business Machines Corporation
• Inventors: Schmid, Bernhard, Baumeister, Sascha
• Primary Examiner(s): Vaughn, Jr.; William C
• Assistant Examiner(s): CHRISTENSEN, SCOTT B
• Application Number:
  US10/624,353
• Publication Number:
  US 20040078470A1
• Time in Patent Office: 2,849 Days
• Field of Search: 709/217, 709/230, 709/231, 709/245, 709/250, 725/86, 725/87, 725/91, 725/98
• US Class Current: 709/231
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]

Abstract

A method, device, and program product are provided for streaming a media file over a distributed information system to a client computer running a browser application. First, a server receives a request for a particular media file from the client computer. Then, the server dynamically generates a metafile, whereby said metafile contains information about the identification, location and format of the media file, and returns it back to the client computer. Advantageously, the server intercepts a download request for the actual media file and reinterprets the download request in into a request for receiving a corresponding metafile. Thus, instead of returning the requested media file, a metafile is returned that allows immediate streaming of the requested media file without the need of waiting for the download to be finished.

Claims

1. A method for streaming a media file over a distributed information system to a client computer running a browser application, the method comprising the steps of:

receiving a request for a particular media file from a client computer,

providing a metafile, wherein said metafile contains information about the identification, location and format of the media file,

returning said metafile back to said client computer,

characterized in that

the step of receiving a request for a particular media file from a client computer comprises the steps of;

intercepting a download request for the actual media file and

reinterpreting said download request into a request for receiving a corresponding metafile.

2. The method according to claim 1, wherein the step of reinterpreting said download request includes the step of deriving information about said corresponding metafile from a portion of the URL.

3. The method according to claim 2, wherein said portion of the URL is the file extension of the requested media file.

4. The method according to claim 1, wherein the step of providing a metafile comprises one of the steps of:

dynamically generating a metafile, and

statically querying a metafile from a data store.

5. The method according to claim 1, wherein the step of reinterpreting said download request includes the step of:

checking predefined filter criteria determining of whether or not a metafile is to be returned instead of the requested media file.

6. The method according to claim 1, wherein the step of providing a metafile further includes the step of retrieving information about the configuration of at least one item chosen from the group comprising:

version of the streaming product, type of the streaming product, location of the media file, load of the servers, load of the network, location of the client, quality of service.

7. The method according to claim 1, wherein the step of providing a metafile further includes the step of reading information about the client'"'"'s preferred streaming format and forming a metafile in accordance with the client'"'"'s preference.

8. A computer-readable program stored on a non-transitory computer-readable medium, said computer readable program being configured to perform the steps of:

receiving a request for a particular media file from a client computer,

providing a metafile, wherein said metafile contains information about the identification, location and format of the media file,

returning said metafile back to said client computer,

characterized in that

the step of receiving a request for a particular media file from a client computer comprises the steps of;

intercepting a download request for the actual media file and

reinterpreting said download request into a request for receiving a corresponding metafile.

9. The computer-readable program of claim 8, wherein the step of reinterpreting said download request includes the step of deriving information about said corresponding metafile from any portion of the URL.

10. The computer-readable program of claim 9, wherein said portion of the URL is the file extension of the requested media file.

11. The computer-readable program of claim 8, wherein the step of providing a metafile comprises one of the steps of:

dynamically generating a metafile, and

statically querying a metafile from a data store.

12. The computer-readable program of claim 8, wherein the step of reinterpreting said download request includes the step of:

checking predefined filter criteria determining of whether or not a metafile is to be returned instead of the requested media file.

13. The computer readable program of claim 8, wherein the step of providing a metafile further includes the step of retrieving information about the configuration of at least one item chosen from the group comprising:

version of the streaming product, type of the streaming product, location of the media file, load of the servers, load of the network, location of the client, quality of service.

14. The computer readable program of claim 8, wherein the step of providing a metafile further includes the step of reading information about the client'"'"'s preferred streaming format and forming a metafile in accordance with the client'"'"'s preference.

15. A method for streaming a media file over a distributed information system to a client computer running a browser application, the method comprising the steps of:

receiving, at a metadata server, a request for a particular media file from a client computer,

providing, at said metadata server, a metafile and a MIME-type, wherein said metafile contains information about the identification, location and format of the media file,

returning said metafile and said MIME-type back from said metadata server to said client computer,

starting a media player on said client computer based on said MIME-type, wherein said media player is started by a browser application running on said client computer,

forwarding said metafile from said browser application to said media player,

extracting information from said metafile, wherein the extracted information is extracted from said metafile by said media player and includes information identifying a streaming server to contact and a streaming protocol to use,

composing a streaming protocol request based on said extracted information,

forwarding said streaming protocol request from said client computer to said streaming server identified in said extracted information,

sending a streaming protocol reply and data packets from said streaming server to said client computer in response to receiving said streaming protocol request,

characterized in that

the step of receiving a request for a particular media file from a client computer comprises the steps of;

intercepting a download request for the actual media file and

reinterpreting said download request as a request for receiving a corresponding metafile.