基于H.264，MPEG4 MP3等编码格式的高清编码器
发布时间：2018-11-12 19:05
【摘要】：本课题研究的高清编码器支持H.264、MPEG4, G.711、mp3视音频压缩算法,目的及优势是在低网络带宽的情况下也具备优异的视音频还原性,大大降低了网络传输的压力。用户可以通过常见的播放器进行直播视频观看。可广泛用于银行,安防,军队,学校等多领域。 课题研究方法为采用嵌入式架构实现对音视频编码、实时网络传输功能,采用客户端软件实现对音视频信号的解码、播放。嵌入式系统包括软硬件,需要在自己研发的高清编码板上开发符合功能需求的嵌入式软件,嵌入式产品离不开硬件的支持,高清编码板采用德州仪器(TI)宣布推出全新TMS320DM368(集成ARM9/DSP)视频处理器,性能得到提高。创新之处是采用硬编码的方式,由处理器内部DSP (HDVICP)实现,应用程序只需要调用一些DSP端的接口即可,缩短了开发人员的开发周期。 所开发的属于比较大型的嵌入式软件,需要有操作系统的支持,以便统一管理系统资源,调度多个应用程序,管理文件系统等作用,完整的嵌入式Linux包括U-BOOT引导程序,linux内核,文件系统,应用软件部分。实际表明,所研发出的高清编码器这款产品实现了所需的功能,压缩编码后的数据变得很小以便在网络上传输,并且客户端通过VLC所观看的图像质量也达到要求,很清晰。
[Abstract]:The high definition encoder in this paper supports H.264 MPEG4, G.711mp3 video and audio compression algorithm. Its purpose and advantage is that it also has excellent video and audio reducibility in the case of low network bandwidth, which greatly reduces the pressure of network transmission. Users can watch live video through a common player. Can be widely used in banking, security, military, schools and other areas. The research method is to use embedded architecture to realize audio and video coding, real-time network transmission, and client software to decode and play audio and video signals. The embedded system includes hardware and software, so it is necessary to develop embedded software which meets the function requirement on the high-definition coding board developed by oneself. Embedded products can not be separated from the support of hardware. New TMS320DM368 (integrated ARM9/DSP) video processor has been announced using Texas Instruments (TI), and the performance has been improved. The innovation is that it is hardcoded and implemented by the DSP (HDVICP) inside the processor. The application only needs to call some interfaces of the DSP side, which shortens the developer's development cycle. The developed embedded software needs the support of operating system in order to manage system resources, schedule multiple applications, manage file system, etc. The whole embedded Linux includes U-BOOT boot program. Linux kernel, file system, application software part. The practice shows that the developed high-definition encoder achieves the required functions, the compressed and encoded data become very small for transmission over the network, and the quality of the image viewed by the client through VLC is very clear.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN762;TP368.1
本文编号：2327946
[Abstract]:The high definition encoder in this paper supports H.264 MPEG4, G.711mp3 video and audio compression algorithm. Its purpose and advantage is that it also has excellent video and audio reducibility in the case of low network bandwidth, which greatly reduces the pressure of network transmission. Users can watch live video through a common player. Can be widely used in banking, security, military, schools and other areas. The research method is to use embedded architecture to realize audio and video coding, real-time network transmission, and client software to decode and play audio and video signals. The embedded system includes hardware and software, so it is necessary to develop embedded software which meets the function requirement on the high-definition coding board developed by oneself. Embedded products can not be separated from the support of hardware. New TMS320DM368 (integrated ARM9/DSP) video processor has been announced using Texas Instruments (TI), and the performance has been improved. The innovation is that it is hardcoded and implemented by the DSP (HDVICP) inside the processor. The application only needs to call some interfaces of the DSP side, which shortens the developer's development cycle. The developed embedded software needs the support of operating system in order to manage system resources, schedule multiple applications, manage file system, etc. The whole embedded Linux includes U-BOOT boot program. Linux kernel, file system, application software part. The practice shows that the developed high-definition encoder achieves the required functions, the compressed and encoded data become very small for transmission over the network, and the quality of the image viewed by the client through VLC is very clear.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN762;TP368.1
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