Method for playing back audio/video of network stream media synchronously

A technology of audio and video synchronization and playback method, applied in the field of IP network, can solve the problems of not being suitable for multimedia playback system, stand-alone, large random errors, etc., and achieve the effect of improving streaming media playback effect, improving synchronization accuracy, and simple synchronization process

Inactive Publication Date: 2007-02-21
SICHUAN CHANGHONG ELECTRIC CO LTD
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Due to the complex factors of IP network transmission data, the audio and video synchronization accuracy is uncertain in the above streaming media playback process, the random error is large, and the synchronization effect is not satisfactory.
[0009] However, existing audio and video synchronization related technologies are mainly limited to stand-alone playback systems, and are not suitable for multimedia playback systems in network environments.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for playing back audio/video of network stream media synchronously
  • Method for playing back audio/video of network stream media synchronously
  • Method for playing back audio/video of network stream media synchronously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0045] In this example, the streaming media playback process is as follows: figure 2 shown.

[0046] After receiving media data from the network, push it into a temporary storage area instead of directly pushing it to the audio / video buffer. Within the staging area, packets are reordered according to their sequence numbers. After that, the temporary storage area is regularly accessed by the audio and video timer, and the data is fetched into the audio / video buffer.

[0047] The synchronization of audio and video in the present invention is mainly realized by obtaining the reference time of each frame of video data sent by the streaming media server and the reference time of each audio data packet. Since the progress of the data sent by the streaming media server is basically synchronized with the actual playback progress, the audio and video timers are mainly controlled on the terminal side, so as to achieve the purpose of controlling the audio and video playback speed.

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The technical solution provided is to add an audio/video buffer and set an audio/video timer into the currently-used IP stream media displaying device in order to control the display of audio/video data in the buffer and to improve the synchronizing precision between audio and video signal.

Description

technical field [0001] The invention relates to an IP network technology, in particular to an IP network stream media audio and video synchronization technology. Background technique [0002] With the development of 3C integration of home appliances, communications, and consumer electronics, streaming media playback systems based on IP networks have gradually become a hot topic. In IP network streaming media playback technology, how to correctly restore the time relationship between audio and video at the receiving end, that is, to realize synchronous playback of audio and video, has become one of the key technologies. [0003] In the prior art, after the terminal starts to play streaming media (on-demand or multicast), it begins to continuously receive media data packets from the network. The processing flow at this time is as follows (taking the media video as mpeg4 and audio as mp3 as an example): [0004] (1) First judge the media type by RTP Payload (RTP load), and kn...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/62H04N7/60H04N7/52
Inventor 刘杰
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap