Video encoder adjustment based on latency

• US 20080043643A1
• Filed: 07/25/2006
• Published: 02/21/2008
• Est. Priority Date: 07/25/2006
• Status: Active Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Gorzynski, Mark E., Thielman, Jeffrey L.
• Application Number:
  US11/492,393
• Publication Number:
  US 20080043643A1
• Time in Patent Office: Days
• US Class Current: 370/260
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/196 being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters processing of motion vectors H04N19/513

Abstract

Systems, methods, media, and other embodiments associated with video encoder adjustment based on latency are described. One exemplary controller embodiment includes a latency determination logic to determine latency between a first video conference node and a second video conference node, and, an encoder adjustment logic to adjust latency of a video encoder based, at least in part, upon the determined latency.

Claims

1. A controller, comprising:

a latency determination logic to determine latency between a first video conference node and a second video conference node; and

,

an encoder adjustment logic to adjust latency of a video encoder based, at least in part, upon the determined latency.

2. The controller of claim 1, where the encoder adjustment logic causes the latency of the video encoder to increase if the determined latency is less than a threshold in order to decrease bandwidth consumed by the video encoder.

3. The controller of claim 1, where adjustment of the encoder latency comprises a decrease of latency if the determined latency is greater than a threshold.

4. The controller of claim 1, where adjustment of the encoder latency comprises modification of at least one parameter of the encoder.

5. The controller of claim 4, where the parameter is a bit-rate of the encoder.

6. The controller of claim 1, where adjustment of the encoder latency comprises selection of one of a plurality of encoding algorithms.

7. The controller of claim 6, at least one of the plurality of encoding algorithms is based on Moving Picture Experts Group (MPEG), MPEG-2, MPEG-4, ITU H.261, ITU H.273 or H.264.

8. The controller of claim 1, where the video encoder is a coder/decoder (codec).

9. A video conferencing system comprising the video encoder and the controller of claim 1.

10. The controller of claim 1, where the latency determination logic determines latencies between the first video conference node and a plurality of nodes and the encoder adjustment logic adjusts the video encoder based, at least in part, on the determined latencies.

11. The controller of claim 10, where the encoder adjustment logic further adjusts the video encoder based, at least in part, on latency information received from one or more of the plurality of nodes.

12. A method of modifying a video conference encoding system, comprising:

determining latency between a first site and a second site; and

,

adjusting encoding latency based, at least in part, upon the determined latency.

13. The method of claim 12, adjusting encoding latency further comprising:

increasing latency if the determined latency is less than a threshold; and

,

decreasing latency if the determined latency is greater than the threshold.

14. The method of claim 12, where adjusting encoding latency comprises selection of one of a plurality of encoders.

15. The method of claim 12, where adjusting encoding latency comprises modification of at least one setting of an encoder.

16. The method of claim 15, where the setting relates to a bit-rate of the encoder.

17. The method of claim 12 being implemented by processor executable instructions provided by a machine-readable medium.

18. A video encoding system, comprising:

means for determining a network latency between a first video conference node and a plurality of video conference nodes;

means for adjusting a video encoding process to increase latency if the determined network latency is less than a threshold; and

,

means for encoding a video signal using the adjusted video encoding process.

19. The system of claim 18, further comprising means for adjusting the video encoding process to decrease the network latency if the determined network latency is greater than the threshold.

20. The system of claim 18 being implemented as a computer system including a video display.

21. The system of claim 18 being embodied on a computer-readable medium comprising processor executable instructions.