Video conferencing, also known as video conferencing and video phone conferencing, is an audio-visual conversation type conference that provides two-way real-time transmission of voice and pictures between users in two or more places. Large-scale video conference systems are widely used in modern military, government, business, medical and other departments and industries.
Hardware video conferencing requires special camera equipment, encoding and decoding equipment, dedicated lines and special conference rooms to connect several fixed departments, investing at least several million yuan or even tens of millions of yuan; the subsequent maintenance and repair of facilities is expensive and requires The maintenance is performed by a special person, which takes up a lot of capital and human resources of the enterprise. This is a difficult threshold for SMEs to cross. In addition, hardware-based video conferences can only be held in a few fixed conference room locations, with poor flexibility and expandability, and are often helpless in the face of unexpected situations.
The software video conference system has lower cost than the hardware video conference system, and overcomes the problem of poor flexibility and expandability of the hardware video conference system to a certain extent. But the software video conference itself also has some problems that cannot be ignored: most video conference software is C / S architecture, that is, desktop client software + server software. Before normal execution, you need to configure the network and server, download and install the client. If an abnormal situation occurs during this process, refilling the software is also a troublesome task; another software is the B / S architecture, which solves some problems existing on the desktop client, and users can directly conduct video conferences on the web browser.
However, due to the use of ordinary streaming media transmission technology, these products must use the browser to download ActiveX controls, and because malicious websites usually use ActiveX controls to automatically install viruses or backdoors, most pages using this control will be viewed by the browser Intercept, which may cause such video conferences to have problems with product compatibility and applicability. Such programs include: Yahoo Messenger, AOL Instant Messenger (AIM), Windows Live Messenger, Skype, iChat, Paltalk (currently renamed PaltalkScene), Ekiga, Stickam, Tokbox, Camfrog, and meetcam.