attend the meeting2, A and B establish A connection3, B and C establish the connection4, B forward a audio and video to c,b forward C audio and video to aThis situation in the case of B equipment performance is high, and a and C performance is weak, with B as a bridge to achieve 3-party calls, thus reducing the burden on the server. applicable Scenario : This model is only suitable for meetings of 3 people.B. forwarding via server synthesisEveryone attending the meeting sent the audio and video
This article original from Http://blog.csdn.net/voipmaker reprint annotated source.The latest version number TELEMCU added Android phone-side WEBRTC video conferencing capabilities, Android phone installed Chrome/firefox browser after loading TELEMCU Webrtcclientteleweb can directly participate in video conferencing,At the same time, TeleWeb can support up to two webrtcclient-to-peer communication, such as the following:TeleWeb Test Address:Http://ope
anyway.-Not really, the project over there is not finished yet ...Sad and hurried, so:As party A: the choice is most important to the person. When you do not know whether or not to choose the right person, you can only start small projects test water or have a backup plan. In addition to the actual cost, once you find the right person, do not be too stingy and timely payment, so as to have a winning result.As party B: must be delivered on schedule, must be honest. If you can't deliver it on sch
services; loss of use, DATA, or profits; * or business interruption) HOWEVER CAUSED AND ON ANY TH Eory of liability, * whether in contract, strict liability, or tort (including negligence or * OTHERWISE) arising in any way out of the use of this software, even if * advised of the possibility of such damage. */# ifndef TALK_BASE_BASICTYPES_H _ # define TALK_BASE_BASICTYPES_H _ # include
The above Code defines the basic types, as well as the hardware architecture, in byte order. It will be use
WebRTC Code read (10): rtp_rtcp module analysis, webrtcrtp_rtcp1. Call interface RtpReceiverImpl: IncomingRtpPacket call interface ModuleRtpRtcpImpl: RtpData2. the main processing class ModuleRtpRtcpImpl, control Module, is a Module, you can independently process RtpPacketizer/RtpPacketizerH264/handler specific Format Decoding handler class RtpDepacketizer/Resolver/handler/specific format parsing RTP Header Processing class RtpReceiverImpl accept RTP
higher quality network video at limited bandwidth. For most professionals, the h.265 coding standard is not unfamiliar, it is itu-tvceg after the development of the video coding standards. The h.265 standard mainly revolves around the existing video coding standard, which, in addition to preserving some of the original technologies, increases the correlation between the code stream, the encoding quality, the delay, and the complexity of the algorithm. The main contents of h.265 research include
The Audio_device is a WEBRTC audio device module. Encapsulates audio device-related code for each platform Audio device encapsulates two sets of sound code in Android. 1. Use JNI to invoke Java's media. 2. Operate directly through the native C interface of the OpenSL es. The native interface is naturally more efficient, but the downside is that OpenSL requires Android 2.3+. OpenSL ES (Open sound Library for Embedded systems) is a hardware audio accel
This article mainly introduces the multi-person video conferencing Service end architecture, the article from the blog Park Rtc.blacker, reproduced please explain the source.With the rapid development of mobile Internet, many companies want to intervene in online education, smart home, multi-person video, security monitoring and other fields, although they are video communications, but their service-side architecture and point-to-point communication big do not want the same,In most cases, single
When using WEBRTC on the Android layer, the UI changes are triggered by the native layer callback, such as when to draw the other's video window, when to indicate that both connections have been established, etc...I'm going to list what I know now for the memo.Onaddstream (), which indicates that the associated media stream has been initialized successfully (but does not establish a connection), usually at this time display the other side of the video
This article mainly introduces FFmpeg, the article comes from the blog Garden Rtc.blacker, supports the original, the reprint must explain the source, the individual public number blacker, more see Www.rtc.helpDescriptionPS1: If you start learning audio and video directly from WEBRTC, you may not have heard of ffmpeg, and you don't need it, but as you improve your personal abilities, you'll find it really useful.As far as I am currently exposed to the
Recently finally updated the PC version of the WEBRTC, summarized under what adjustments, the article from the blog Garden Rtc.blacker, support the original, reproduced please explain the source.Figure 1: Solution Engineering Structure Comparison:Description1, the biggest adjustment is to remove the Videoengine module, the relevant effects are as follows:1.1, Webrtcdemo inside removed video calls, voice calls still exist, but the removal is a matter o
There are Licode and kurento in contact.Licode Flaw: Limited documentation support, Licode app client library only JSKurento Advantages: Complete Documentation, demo-ready, Packaging API is more complete. Its main features are:
Networked streaming protocols, including HTTP, RTP and WebRTC.
Group Communications (MCUs (Multipoint Conferencing Unit) and Sfus (Selective Forwarding unit.) functionality) Supporting B Oth Media mixing and media
Today let me find a gstreamer of a bull fork of the killer, the mind immediately thought of a general framework and plan, with Gst-inspector first object introspection property detection, and then sacrificed Gst-launcher Broadsword for pipeline test, and finally use C to achieve the pipeline logic source code , you can implement WEBRTC-based video surveillance and live streaming services. Real-time two-person video call or multi-person meeting, after
The WEBRTC audio and video parsing process consists of multiple threads:1. RTP Network stream receive thread (RTP stream reciever thread)2. Audio and video decode thread (decode thread)3. Render threads (render thread)RTP network stream receive thread (RTP stream reciever thread):Receive network RTP packets, parse RTP packets, get audio and video packets. The resolved RTP packet is added to the Rtpstreamreceiver::frame_buffer_ or eventually joined Vcm
The bandwidth adaptive algorithm in WEBRTC is divided into two types:
1, the originator bandwidth control, the principle is the RTCP in the packet loss statistics to dynamically increase or decrease the bandwidth, in the reduction of bandwidth using the TFRC algorithm to increase the smoothness.
2, the receiver bandwidth estimation, the principle is and by the receipt of RTP data, the estimated bandwidth, with the Kalman filter, the transmission time
output signal of the filter and the desired response, which is to ask for a gradient.
The AEC algorithm in WEBRTC belongs to the piecewise fast frequency domain Adaptive filtering algorithm, partioned block Frequeney Domain Adaptive filter (PBFDAF).To determine whether the distal and proximal end of the conversation, also known as double-ended detection, the following four conditions need to be monitored:1. Only the far end to speak, at this time the
WEBRTC use of audio and video engines
At the request of the group of brothers, now how to use WEBRTC audio and video demo put out. Code format is very bad, you look at the spectators do not bother to tidy up.
#include
This article provides an overview of the WEBRTC audio processing flow, as shown in the following diagram:
WebRTC an audio session is abstracted into a channel, such as A and b for audio calls, a needs to establish a channel and b for audio data transmission. The figure above has three channel, each channel contains codec and real-time Transport protocol (real-time Transport Protocol,RTP)/ The real-time Tra
output signal of the filter and the desired response, which is to ask for a gradient.
The AEC algorithm in WEBRTC belongs to the piecewise fast frequency domain Adaptive filtering algorithm, partioned block Frequeney Domain Adaptive filter (PBFDAF).To determine whether the distal and proximal end of the conversation, also known as double-ended detection, the following four conditions need to be monitored:1. Only the far end to speak, at this time the
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