webrtc audio demo

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Android IOS WebRTC Audio Video Development Summary (86)--analysis of implementation of RTP/RTCP protocol in WebRTC

finally works.At this point, we analyze the whole process of sending and receiving RTCP messages.Vi. SummaryBased on the deep analysis of WEBRTC source code, this paper describes the realization process of the RTP/RTCP module with the flowchart, and makes a thorough and detailed study on the key issues (such as the data source of the RTCP message). It lays a good foundation for further mastering the principle and details of WEBRTC's realization.Refer

Android IOS WebRTC Audio and Video Development Summary (87)--analysis of the implementation of packet loss retransmission Nack in WebRTC

WEBRTC source code, the transmission and reception of video packets is taken as an example, and the implementation of Anck packet retransmission mechanism is deeply analyzed. The main contents include: SDP negotiation Nack, receiving end packet loss determination, NACK message construction, sending, receiving and parsing, RTP packet retransmission. The following are discussed in detail.I. SDP negotiation NACKThe nack is used as the RTP layer feedback

Android IOS WebRTC Audio Video Development Summary (83)--using WebRTC broadcast webcam video (top)

QuickTime plugin, but we want a pure browser video stream.Another notable option is Flash Player, which can receive rtmp streams obtained through Wowza conversion rtsp/rtp/h.264. But Flash Player is also a browser plugin, although it is more popular than VLC and QuickTime.In our scenario, we test the same RTSP/RTP stream, but use the WEBRTC compatible browser as the player to play the video without any additional plugins. We set up a conversion serve

WEBRTC Audio and Video synchronization method _ audio and video coding and decoding

Turn from: http://blog.csdn.net/lixiaowei16/article/details/53407010 Audio and video synchronization is related to the most intuitive user experience of multimedia products, audio and video media data transmission and rendering playback of the most basic quality assurance. If the audio and video is not synchronized, it may cause delays, such as cotton, etc. ver

Android IOS WebRTC Audio Video Development Summary (10)

lot of time this way the effect is very good,This only takes up a lot of bandwidth and CPU, especially for mobile phones.Complete mesh topology: Everyone is connected to each otherIn addition, the WEBRTC client can select a client to send streaming data directly to other clients, in this star network structure, you can directly do a publishing service side, the client will stream to the server,The server is then pushed to each client to relieve clien

Separate compilation of audio processing modules using WEBRTC _ Audio and video

, While the Android audio system latency is mostly above 100ms, so it is necessary to increase the length of the AEC-PC filter and ensure its operational efficiency is the focus of optimization) 3 other module optimization (such as jitter buffer, etc.). 4. After the text of the source list is outdated, because I do not currently support the separate compilation of these modules, I do not update the list, if there is an independent compiler requirement

WEBRTC Audio and Video engine research (1)--Overall architecture analysis

Developer API layer, (2) The blue solid line part is facing the browser vendor's API layer (that is, the red box inside the module, also I focus on the research part) (3) Blue dashed some browser vendors can customize the implementation of 3, WEBRTC Architecture Component Introduction(1) Your Web AppWeb developers develop programs that enable Web developers to develop real-time communication applications based on video and

Compile and use WEBRTC Audio noise Reduction Module (NS) separately

compiled and run. In addition, the effect is very good, through the test demo included in this article you can feel a bit. Noise reduction has two parts of the code, one set is the fixed-point algorithm (noise_suppression_x.h), a set of floating-point algorithm (noise_suppression.h). The floating-point algorithm is relatively more accurate, but consumes more system resources, especially on low-end arm CPUs with weak floating-point computing power. Ho

Let WebRTC use external audio and video codecs

WebRTC supports the use of its own codec (limited to native development), audio, video can be. Here the video coding as an example to analyze the corresponding source code in the WebRTC.CreatepeerconnectionfactoryIn Webrtc/api/peerconnectioninterface.h there is a method Createpeerconnectionfactory, the prototype is as follows:inline rtc::scoped_refptrAs you can s

Let WebRTC use external audio and video codecs

WebRTC supports the use of its own codec (limited to native development), audio, video can be. Here the video coding as an example to analyze the corresponding source code in the WebRTC. createpeerconnectionfactory In Webrtc/api/peerconnectioninterface.h there is a method Createpeerconnectionfactory, the prototype is a

Analysis of synchronization mechanism for WEBRTC audio and video

2016-11-25 DORAWEBRTC series Wind net WEBRTC series Wind Net Source: Wind NET Series Author: Weizhenwei, fan network columnist Audio and video synchronization is the most intuitive user experience for multimedia products, and is the most basic quality guarantee for audio and video media data transmission and rendering playback. If the

"WEBRTC Audio preprocessing unit APM's overall compilation and use-Android"

ObjectiveBefore writing the article "separate compilation using WEBRTC audio processing module-Android", I have been trying to compile the WEBRTC audio processing engine Voe the whole to use for his project, but limited to the poor technology, time is tight, so did not succeed. The AECM, AGC, NS, and VAD modules in the

WEBRTC Audio-related neteq (i)

The previous article (latency) and the reduction method at the end of the speech communication, said that from the beginning of this article will cut into the WebRTC Neteq theme, Neteq is one of the two core technologies of audio technology in WEBRTC (another core technology is the front and back processing of audio, i

WebRTC Audio and Video synchronization method

016-11-25 DORAWEBRTC series Wind net WEBRTC series Wind Net Source: Wind NET Series Author: Weizhenwei, fan network columnist Audio and video synchronization is the most intuitive user experience for multimedia products, and is the most basic quality guarantee for audio and video media data transmission and rendering playback. If the

Local Audio collection of WEBRTC

Reprint Please specify source: http://www.cnblogs.com/fangkm/p/4374668.htmlThe previous blog introduces the local video collection, this article introduces the audio capture process, but also introduces WEBRTC native audio collection, and then introduces chromium source to its customization.1. WebRTC native

Local Audio collection of WEBRTC

Transferred from: http://www.cnblogs.com/fangkm/p/4374668.htmlThe previous blog introduces the local video collection, this article introduces the audio capture process, but also introduces WEBRTC native audio collection, and then introduces chromium source to its customization.1. WEBRTC native

WEBRTC Source Analysis: Audio module structure analysis

First, an overview of the WEBRTC audio processing flow, see:WEBRTC The audio session is abstracted into a channel channels, such as A and b for audio calls, a needs to establish a channel and b for audio data transmission. There are three channel, each channel contains codec

WEBRTC audio engine with client create code for the daytime

compositemediaenginewebrtcvoiceengine, webrtcvideoengine2>{PublicWebRtcMediaEngine2 (webrtc::audiodevicemodule* adm,webrtcvideoencoderfactory* encoder_factory, webrtcvideodecoderfactory* decoder_factory)};2.1.5\src\talk\media\webrtc\webrtcvoiceengine.ccWebrtcvoiceengine::webrtcvoiceengine (): Voe_wrapper_ (new Voewrapper ()){Construct ();}2.1.6Src\talk\media\webrtc

Android IOS WebRTC Audio and Video Development summary (76)--a discussion on the live low latency low-flow fan-to-Mac technology

This paper focuses on the WEBRTC-based direct-to-peer streaming technology (Shi, Pro Gajun CTO, Editor: Dora), first published in " here "Support the original, reprint must indicate the source, welcome attention to the public number blacker (Id:blackerteam or WEBRTCORGCN)So far, the live industry continues as expected in full swing development, in the competition after the delay, HD, beauty, seconds open and other functions, the recent major live plat

Next Tuesday launch of "Audio and video technology WEBRTC" Open class, Welcome to join!

?? Next Tuesday launch of "Audio and video technology WEBRTC" Open class, Welcome to join!Open Course Links: http://edu.csdn.net/huiyiCourse/detail/90The course's explanatory material and code will be uploaded at the end of the Open class http://download.csdn.net/user/yangzhenpingThe following is the course information:Course Brief IntroductionThe core of WEBRTC

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