34 lines
1.5 KiB
Text
34 lines
1.5 KiB
Text
Mediastreamer2 is a powerful and lightweight streaming engine specialized
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in voice/video telephony applications.
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It is the library that is responsible for all the receiving and sending of
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multimedia streams in linphone, including voice/video capture, encoding and
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decoding, and rendering.
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Features:
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* Capture and playback from various platform dependent sound architectures
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* Send and receive RTP streams
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* Encode and decode the following audio formats: OPUS, speex, G711, GSM, iLBC,
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AMR, AMR-WB, G722, SILK, G729, and video formats H263, theora, MPEG4,
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H264 and VP8
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* RTP/AVPF support: RTCP control messages for video error recovery: PLI, SLI,
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RPSI, FIR
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* Audio conferencing
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* Supports SRTP and ZRTP (encryption of voice and video)
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* Supports any webcam, based on OS's camera API: quicktime, directshow,
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video4linux, android.camera
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* Acoustic echo cancellation using the speex echo canceler or webrtc AECm
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* Read and write .wav files
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* Optimized rendering of YUV pictures, using OpenGL, DrawDib, X11/Xv
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* Dual tones generation
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* Custom tone detector
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* Audio parametric equalizer
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* Volume control, automatic gain control
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* ICE for optimized NAT traversal (RFC5246) to allow peer to peer audio and
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video connections without media relay server
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* Adaptive bitrate control algorithm: for automatic adaption of encoder
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bitrate based on received RTCP feedback
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* Can use plugins to add new codecs, new sound input/output backends,...
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WWW: https://www.linphone.org/technical-corner/mediastreamer2.html
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