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A speed control method in stream media transmission system

A technology of streaming media transmission and rate control, which is applied in transmission systems, error detection/prevention using signal quality detectors, electrical components, etc. It can solve problems such as jitter, image jamming, parking and parking, and reduce resource utilization. , smooth video service, and stable transmission rate

Inactive Publication Date: 2005-08-17
SHANGHAI CHUANHAI INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the quality of playback on the client end is degraded, and image jamming, jittering, and parking still occur from time to time, and the quality of service cannot be guaranteed

Method used

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  • A speed control method in stream media transmission system
  • A speed control method in stream media transmission system
  • A speed control method in stream media transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The rate control process at the sending end of the streaming media transmission system is shown in Figure 1. Proceed as follows:

[0031] 1. First, the streaming media sender receives the playback terminal request;

[0032] 2. Determine the multimedia data source according to the request of the playback terminal;

[0033] 3. Determine the initial sending rate according to the encoding information of the multimedia data source;

[0034] 4. Determine the current sending data volume according to the expected transmission rate;

[0035] 5. Send a certain amount of data to the network;

[0036] 6. Receive the packet loss rate and receiving buffer occupancy rate fed back by the playback terminal;

[0037]7. Determine whether the multimedia stream is over or the user stops playing, and exit if it is over;

[0038] 8. Adjust the expected sending rate according to the transmission rate in step 4 and the packet loss rate and receiving buffer occupancy in step 6;

[0039] 9....

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PUM

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Abstract

This invention relates to a flow media transmission system speed control method, which disclose how to fully use of network wide band and how to control video technique of media video play system. The invention sets buffer occupancy rate B through receiving end and sends back B to the sending end through data channel, wherein the sending end adjusts the code rate increasing Step R and decreasing parameter alpha according to the B network package losing rate.

Description

1. Technical field: [0001] The invention relates to a technology for effectively transmitting video and audio data streams on the network in the field of network multimedia data transmission and playback, and in particular discloses a rate control method in a streaming media transmission system, which effectively utilizes network bandwidth and enables video-on-demand in streaming media The code rate control technology for video and audio data streams on the system. 2. Background technology: [0002] For the current network, data transmission based on TCP / IP is bursty, intermittent, greedy, and best-effort. Data transmission in this way is like a traffic system without traffic lights, which is prone to traffic jams. It causes network congestion and leads to a large number of retransmissions of data packets, which greatly reduces the utilization rate of channel bandwidth. [0003] When the real-time multimedia service in the IP packet network is transmitted in the network, s...

Claims

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Application Information

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IPC IPC(8): H04L1/20H04L29/02
Inventor 朱爱玺
Owner SHANGHAI CHUANHAI INFORMATION SCI & TECH
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