In-band media performance monitoring

• US 7,729,381 B2
• Filed: 09/15/2006
• Issued: 06/01/2010
• Est. Priority Date: 09/15/2006
• Status: Expired due to Fees

• Current Assignee: Rovi Technologies Corporation (Adeia Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Sposato, Steve, Savoor, Raghvendra G., Li, Zhi, Gemelos, Steven, Krishnamurthi, Ganesh
• Primary Examiner(s): Sam; Phirin
• Application Number:
  US11/522,275
• Publication Number:
  US 20080069002A1
• Time in Patent Office: 1,355 Days
• Field of Search: None
• US Class Current: 370/474
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• 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 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 65/80 Responding to QoS

Abstract

A method including receiving data packets encapsulating at least part of a media stream, extracting a decoder-ready packet from the data packets, processing the decoder-ready packet; and substantially synchronously with the processing of the decoder-ready packet, generating delivery performance information for the at least part of the media stream, data from which is included in the decoder-ready packet.

Claims

1. A system comprising:

a first decoder-ready packet buffer;

a second decoder-ready packet buffer;

a data packet receiving module to receive data packets that encapsulate at least part of a single media stream originating from a single source;

a data packet extractor module to extract decoder-ready packets from the data packets and store the decoder-ready packets into the first decoder-ready packet buffer and the second decoder-ready packet buffer;

a media decoder module to decode decoder-ready packets from the first decoder-ready packet buffer; and

a virtual media player module to receive, substantially synchronously with the decoding of decoder-ready packets from the first decoder-ready packet buffer by the media decoder module, duplicate decoder-ready packets from the second decoder-ready packet buffer and to generate delivery performance information for at least part of the single media stream, data from which is included in the duplicate decoder-ready packets,

wherein the generating of delivery performance information includes the virtual media player module attempting to assemble one or more media frames or other discrete portion of the single media stream from the decoder-ready packets, thereby to determine whether the media frames constitute complete media frames, and when the virtual media player module determines that the media frames that were attempted to be assembled are in some way impaired or ill-formed, the virtual media player module generates a media impairment report.

2. The system of claim 1, wherein the virtual media player module is further to transmit the delivery performance information to a stream quality collection monitor.

3. The system of claim 1, wherein the generating of delivery performance information further includes examining header information of a decoder-ready packet.

4. The system of claim 3, wherein the decoder-ready packet is a PES packet.

5. The system of claim 1, wherein the generating of delivery performance information further includes the generating of data packet loss information.

6. The system of claim 1, wherein the generating of delivery performance information further includes the generating of media impairment information selected from the group consisting of MPEG block loss information, MPEG picture_header loss information, video and audio synchronization information, video presentation performance information, subscriber video presentation quality information, and combinations thereof.

7. The system of claim 1, wherein the generating of delivery performance information further includes the generating of network delivery path performance information.

8. The system of claim 7, wherein the network delivery path performance information includes data packet loss information.

9. The system of claim 1, further including a synchronization module, wherein the synchronization module facilitates the substantially synchronous receiving of decoder-ready packets by the virtual media player module and the media decoder module.

10. The system of claim 1, wherein the substantially synchronous receiving of decoder-ready packets by the virtual media player module with respect to the processing decoder-ready packets by the media decoder module is facilitated by the presence of a decoding timestamp associated with each decoder-ready packet.

14. The system of claim 1, further including:

a stream quality collection monitor to receive the delivery performance information from the virtual media player module.

15. The system of claim 14, wherein the stream quality collection monitor is further to reconstruct the at least part of the media stream as decoded by the media decoder module.

11. A system comprising:

a decoder-ready packet buffer;

a data packet receiving module to receive data packets encapsulating at least part of a single media stream originating from a single source;

a data packet extractor module to extract decoder-ready packets from the data packets and store the decoder-ready packets into the decoder-ready packet buffer;

a media decoder module to process decoder-ready packets from the decoder-ready packet buffer; and

a virtual media player module to receive, substantially synchronously with the processing of the decoder-ready packets from the decoder-ready packet buffer by the media decoder module, the same decoder-ready packets from the decoder-ready packet buffer and to generate delivery performance information for at least part of the single media stream, data from which is included in the decoder-ready packets received from the decoder-ready packet buffer,

wherein the generating of delivery performance information includes the virtual media player module attempting to assemble one or more media frames or other discrete portion of the single media stream from the decoder-ready packets, thereby to determine whether the media frames constitute complete media frames, and when the virtual media player module determines that the media frames that were attempted to be assembled are in some way impaired or ill-formed, the virtual media player module generates a media impairment report.

12. The system of claim 11, wherein the processing of the decoder-ready packet is selected from the group consisting of extracting the decoder-ready packet from at least one data packet, decoding the decoder-ready packet, receiving the decoder-ready packet from the decoder-ready packet buffer, and combinations thereof.

13. The system of claim 11, wherein the virtual media player module is further to transmit the delivery performance information to a stream quality collection monitor.

16. A system comprising:

a first decoder-ready packet buffer;

a second decoder-ready packet buffer;

first means for receiving data packets that encapsulate at least part of a single media stream originating from a single source;

second means for extracting decoder-ready packets from the data packets and store the decoder-ready packets into the first decoder-ready packet buffer and the second decoder-ready packet buffer;

third means for processing decoder-ready packets from the first decoder-ready packet buffer; and

fourth means to receive, substantially synchronously with the processing decoder-ready packets from the first decoder-ready packet buffer by the third means, decoder-ready packets from the second decoder-ready packet buffer and for generating delivery performance information for at least part of the single media stream, data from which is included in decoder-ready packets in the second decoder-ready packet buffer,

wherein the generating of delivery performance information includes the fourth means attempting to assemble one or more media frames or other discrete portion of the single media stream from the decoder-ready packets, thereby to determine whether the media frames constitute complete media frames, and when the fourth means determines that the media frames that were attempted to be assembled are in some way impaired or illformed, the fourth means generates a media impairment report.

17. The system of claim 16, further including means for facilitating the substantially synchronous receiving of decoder-ready packets by the fourth means and the processing of decoder-ready packets by the third means.

18. The system of claim 16, wherein the substantially synchronous receiving of decoder-ready packets by the fourth means with respect to processing decoder ready-packets by the third means is facilitated by the presence of a decoding timestamp associated with each decoder-ready packet.