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Method and terminal for playing video on low-side embedded product

A technology for playing video and embedded, applied in the field of methods and terminals, can solve the problems of unsmooth playback picture, asynchronous audio and video, etc., and achieve the effects of saving memory space, improving decoding speed, and reducing decoding complexity.

Active Publication Date: 2012-07-18
ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for playing video on low-end embedded products, aiming to solve the problem that the generated audio and video are not synchronized and the playback screen is not no fluency problem

Method used

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  • Method and terminal for playing video on low-side embedded product
  • Method and terminal for playing video on low-side embedded product
  • Method and terminal for playing video on low-side embedded product

Examples

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Embodiment 1

[0023] figure 1 It shows the flow of the method for playing video on low-end embedded products provided by the first embodiment of the present invention. In this embodiment, a file composed of voice and image is parsed so as to obtain the audio data and video code stream of the file, and Play the decoded video stream according to the timestamp of the audio data, as detailed below:

[0024] In step S11, the audio data and the video code stream are obtained, and the audio data is converted from a digital signal to an analog signal by using a digital-to-analog converter.

[0025] As another embodiment of the present invention, the following steps are further included before the step of obtaining audio data and video code stream, and adopting a digital-to-analog converter to convert the audio data from a digital signal to an analog signal:

[0026] Read a file composed of audio and images, and parse the file to obtain the audio data and video stream of the file. As the combined ...

Embodiment 2

[0042] figure 2 A terminal structure for playing video on a low-end embedded product provided by an embodiment of the present invention is shown. For ease of description, only parts related to this embodiment are shown.

[0043] The terminal for playing video on low-end embedded products can be used for various information processing terminals connected to servers through wired or wireless networks, such as mobile phones, pocket computers (Pocket PersonalComputer, PPC), palmtop computers, computers, notebook computers, Personal digital assistants (Personal Digital Assistant, PDA), etc., can be software units, hardware units, or a combination of software and hardware running in these terminals, and can also be integrated into these terminals as independent pendants or run on applications in these terminals. system, where:

[0044] The analog signal acquisition unit 21 acquires audio data and video code stream, and uses a digital-to-analog converter to convert the audio data f...

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Abstract

The invention is applied to the audio and video playing field, and provides a method and a terminal for playing video on a low-side embedded product. The method comprises the following steps of: obtaining audio data and video code stream, and adopting a digital-to-analog convertor to convert the audio data from a digital signal to an analog signal; confirming an audio timestamp of the audio data according to audio parameter of the digital-to-analog convertor; confirming a video timestamp of the video code stream according to frame rate of the obtained video code stream; and decoding the video code stream according to the audio timestamp and the video timestamp and playing the decoded video code stream. According to the embodiment of the invention, only when an absolute value of the difference between the audio timestamp and the video timestamp is less than a preset time threshold, can the video code stream coded by adopting an MJPED coding mode with lower complexity be decoded, so that the audio and the video can be played synchronously.

Description

technical field [0001] The invention belongs to the field of audio and video playing, and in particular relates to a method and terminal for playing video on low-end embedded products. Background technique [0002] With the rapid development of network technology and multimedia technology, there are more and more products with multimedia playback function on the market, such as MP3 with audio playback function, MP4 with audio and video playback function, etc. [0003] In the existing low-end embedded products, h.264 and Real Media Variable Bitrate (rmvb) with dynamic sampling rate are often used to encode the video stream, and Advanced Audio Coding (AAC) and The cook encodes the audio data. The encoding methods such as h.264, rmvb, AAC and cook have a high compression rate, and the corresponding decoding algorithm has a high complexity. [0004] If the audio playback function and video playback function are provided in low-end embedded products at the same time, the effect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N21/8547H04N21/647
Inventor 胡静苏丹胡胜发
Owner ANYKA (GUANGZHOU) MICROELECTRONICS TECH CO LTD
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