baresip is a bare-bones SIP user agent. It supports SIP, SDP, RTP/RTCP, and STUN/TURN/ICE, and IPv4 and IPv6, and is RFC-compliant and has portable C89 and C99 source code. A modular plugin architecture provides stdio, cons, and evdev user interfaces, celt, g711, g722, gsm, ilbc, l16, and speex audio codecs, alsa, coreaudio, gst, portaudio, oss, winwav, and mda audio drivers, speex_pp, speex_aec, speex_resamp, and sndfile audio filters, the avcodec video codec, avformat, quicktime, qtcapture, v4l, and v4l2 video sources, sdl, opengl, and x11 video display drivers, and srtp media encoding. Release Notes: New g726 audio codec, MWI (message waiting indication), and snapshot (for saving a video stream as PNG images) modules were added. An internal audio resampler was added. There were many improvements and bugfixes. Tags: SIP, voip, STUN, turn, ICE, RTP, RTCP, SRTP, H263, h264, Speex, CELT, G722, OPUS Licenses: BSD Revised
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