BigSpeed Video Chat SDK 3.0
igSpeed Video Chat SDK is a set of two COM components (Client and Server) thatnlets you set up a private video chat network for secure messaging.nThe transfered data are scrambled using on-the-fly 128-bit AES encryption. The security is provided in two different modes: symmetric encryption with shared secret key and asymmetric encryption with 1024-bit public/private keys.nThe server is responsible for keeping information on and authentication of online peers.nAll peers connected to a particular server build a single private community. nThere is adjustable video frame quality and motion detection for better video compression nA lot of badwidth can be saved by not sending any frame which is not quite different than the last one. nAbility is provided to conduct one-to-one or or one-to-many voice/video sessions.nIn addition, the average bitrate is reduced thanks to the silence compression. In the encoder, a Video activity detector with an adjustable trigger level is used to distinguish between regions with normal speech activity and those with silence or background noise.nSignificant echo suppression is achieved using a robust double talk detector.nCapability to mute recording and mute playback is implemented.nThe incoming and outgoing audio data are available in raw PCM format for visualization in the application.nTwo special events notify about signal overloading (possible distorsions) and transmission delays (network congestions).nTwo different kind of text information can be exchanged between peers: alert and chat messages.nFile transfer capability is implemented for direct file exchange between peers.nBigSpeed Video Chat SDK utilizes an elegant event-driven paradigm for easy integration into Windows applications.A special attention is paid to provide responsive user interface while avoiding multithreading problems.nSample applications are included in Visual Basic 2005 and Delphi 7.
