videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the \s \o resolve outstanding issues, obviously worked,\ory of the year. The County's departments at all levels must firmly establish the \nghui is gold and silver\development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well \ng the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will \d at the county level, up to five\basic objective grasp of pollution control that focus, with the focus on three things: a good job, \ar rivers\eated. Organization \back\nspection, the County garbage River, black and odorous River is \rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the \-stop strategy\oving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of \s\al attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve \nt from sewage treatment rate, running accuracy, compliance\ent, speed up the town's support network construction, is focusing on nanotubes home \on. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the \pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to %up mud\deepening water of this year's \nvestigation line touches work, implementation plan according to the prioritieand the programme of work, in accordance with the \quires detailed cleaning, dredging plan, planning ahead of time cleaning out mud \ng to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of视频会议系统的基础知识—经典
谈视频会议软、硬技术特点
视频会议系统是通过网络通信技术来实现的虚拟会议，使在地理上分散的用户可以共聚一处,通过图形、声音等多种方式交流信息，支持人们远距离进行实时信息交流与共享、开展协同工作的应用系统。视频会议极大的方便了协作成员之间真实、直观的交流，对于远程教学和会议也有着举足轻重的作用。
视频会议领域
①基于硬件的视频会议系统：现在最常用的实现手段。特点是使用专用的设备来实现视频会议，系统造价较高，使用简单，维护方便，视频的质量非常好，对网络要求高，需要专线来保证。
②基于软件的视频会议系统：完全使用软件来完成硬件的功能，主要借助于高性能的计算机来实现硬件解码功能。特点是充分利用已有的计算机设备，总体造价较低。
③网络视频会议系统：完全基于互联网而实现的。特点是可以实现非常强大的数据共享和协同办公，对网络要求极低，完全基于电信公共网络的运营，客户使用非常方便，不需要购买软件和硬件设备，只需交费即可，视频效果一般。
软件视频会议系统及其特点
软件视频是基于PC架构的视频通信方式，主要依靠CPU处理视、音频编解码工作，其最大的特点是廉价，且开放性好，软件集成方便。但软件视频在稳定性、可靠性方面还有待提高，视频质量普遍无法超越硬件视频系统，它当前的市场主要集中在个人和企业。
reatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation \ction plans\s to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all intends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project \environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover rservoir, focus flood control drainage engineering construction, vigorously implementation \di\d row\neering, increased geological disaster hidden points governance efforts, solid advance small basin torrent disaster governance, efforts from essentially solution basin sex, and regional flood control drainage capacity insufficient of problem. Vigorously implement the piers, algae and other water sources protection and, promoting rural drinking water safety projects, setting up water pricing reform and environmental protection mechanism, guiding water depth. Further soil pollution and repair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements mutual long. Four, manage to tighten control, to play \e to split\a Baolong, Secretary of provincial party Committee stressed that while the \e to split\on time is over three years, but \continue to catch on, and resolve a split cannot be changed. All localities and departments to the village and %unauthorised\created videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the \ timetables \o resolve outstanding issues, obviously worked,\ory of the year. The County's departments at all levels must firmly establish the \nghui is gold and silver\development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well \ng the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will \d at the county level, up to five\basic objective grasp of pollution control that focus, with the focus on three things: a good job, \ar rivers\eated. Organization \back\nspection, the County garbage River, black and odorous River is \rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the \-stop strategy\oving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of \s\al attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve \nt from sewage treatment rate, running accuracy, compliance\d up the town's support network construction, is focusing on nanotubes home \on. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the \pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to %up mud\deepening water of this year's \-start an investigation line touches work, implementation plan according to the prioritieand the programme of work, in accordance with the \quires detailed cleaning, dredging plan, planning ahead of time cleaning out mud \ng to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of软件视频会议系统是软件视频的一个重要应用，主要采用服务器+PC的架构。在中心点部署MCU服务器、多画面处理服务器和流媒体服务器;在普通桌面PC上配置USB摄像头、耳麦和会议终端软件;在会议室配置高性能PC、视频采集卡、会议摄像头和会议终端软件。在召开视频会议时，采用基于Windows的操作界面进行会议的各项设置和管理。
软件视频会议系统的优势：
1、部署方便
当前主流配置的PC一般都能够作为视频终端，这些PC安装好摄像头、耳麦及相关软件，通过局域网或者互联网接入到中心MCU服务器，即可参加会议。
2、可集成数据会议
由于基于Windows操作系统，可以在召开视频会议的同时实现电子白板、程序共享、文件传输等数据会议功能，作为会议的辅助工具。
3、成本低
由于PC已经是办公的标准配置，桌面会议终端不需要增加很多的硬件投入。而会议室型终端也只需要购买比较高性能的PC和视频采集卡即可，其成本也低于普通的硬件视频终端。
软件视频会议系统的弱势：
1、安全性和稳定性比较差
软件视频基于Windows操作平台和PC架构，比较容易受到病毒和黑客的攻击，且不适合长时间运行。特别是基于软件的会议室终端，采用了大量插卡和外围配套设备，集成度低，故障点比较多，故障排查也比较困难。
reatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation \ction plans\s to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all intends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project \environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover reservoir, focus flood control drainage engineering construction, vigorously implementation \di\d row\neering, increased geological disaster hidden points governance efforts, solid advance small basin torrent disaster governance, efforts from essentially solution basin sex, and regional flood control drainage capacity insufficient of problem. Vigorously implement the piers, algae and other water sources protection and, promoting rural drinking water safety projects, setting up water pricing reform and environmental protection mechanism, guiding water depth. Further soil pollution and repair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements mutual long. Four, manage to tighten control, to play \e to split\a Baolong, Secretary of provincial party Committee stressed that while the \e to split\on time is over three years, but \must continue to catch on, and resolve a split cannot be changed. All localities and departments to the village and %unauthorised\created videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the \ timetables \o resolve outstanding issues, obviously worked,\ory of the year. The County's departments at all levels must firmly establish the \nghui is gold and silver\development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well \ng the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will \d at the county level, up to five\basic objective grasp of pollution control that focus, with the focus on three things: a good job, \ar rivers\eated. Organization \back\nspection, the County garbage River, black and odorous River is \rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the \-stop strategy\oving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of \s\al attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve \nt from sewage treatment rate, running accuracy, compliance\d up the town's support network construction, is focusing on nanotubes home \on. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the \pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to %up mud\deepening water of this year's \-start an investigation line touches work, implementation plan according to the prioritieand the programme of work, in accordance with the \quires detailed cleaning, dredging plan, planning ahead of time cleaning out mud \ng to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of2、视、音频效果一般
桌面软件终端采用的USB摄像头一般只能提供低于CIF品质的视频质量，帧率低、色彩还原度不好。会议室软件终端虽然可配置专用会议摄像头，但其经过视频采集和软件编码等处理后，视频延时比较大，视、音频信号无法同步。
3、QoS保障机制不健全
当前大部分软件视频解决方案无法提供完善的QoS保障机制，当网络传输条件比较差时，会出现视频马赛克、延时，音频失真、抖动等情况。
4、对不同网络的支持能力比较差
由于基于通用PC架构，软件视频解决方案一般只能支持以太网线路传输，无法支持基于专线的H.320网络架构。
基于软件视频和硬件视频的各项优缺点，正在软件和硬件视频会议选择上面犹豫的用户需要结合自身的特点来选择最为合适的视频会议系统。
硬件视频会议系统及其特点
硬件视频是基于嵌入式架构的视频通信方式，依靠DSP+嵌入式软件实现视音频处理、网络通信和各项会议功能。其最大的特点是性能高、可靠性好，大部分中高端视讯应用中都采用了硬件视频方式。
硬件视频会议系统主要包括嵌入式MCU、会议室终端、桌面终端等设备。其中MCU部署在网络中心，负责码流的处理和转发;会议室终端部署在会议室，与摄像头、话筒、电视机等外围设备互联;桌面终端集成了小型摄像头和LCD显示器，可安放在办公桌上作为专用视频通信工具。
reatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation \ction plans\s to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all ntends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project \environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover reservoir, focus flood control drainage engineering construction, vigorously implementation \di\d row\neering, increased geological disaster hidden points governance efforts, solid advance small basin torrent disaster governance, efforts from essentially solution basin sex, and regional flood control drainage capacity insufficient of problem. Vigorously implement the piers, algae and other water sources protection and, promoting rural drinking water safety projects, setting up water pricing reform and environmental protection mechanism, guiding water depth. Further soil pollution and repair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements mutual long. Four, manage to tighten control, to play \e to split\a Baolong, Secretary of provincial party Committee stressed that while the \e to split\ation time is over three years, but \continue to catch on, and resolve a split cannot be changed. All localities and departments to the village and %unauthorised\created
视频会议系统的基础知识—经典
