Reproduced in the original: http://blog.csdn.net/shichaog/article/details/52399354 thank you very much.
Vad (voice Activity Detection) algorithm is to detect the voice , in the far-field speech interaction scenario, VAD faces two challenges: 1. How to successfully detect the lowest energy voice (sensitivity).2. How to successfully detect in the multi-noise environment (detection rate and false detection rate).The missed response is originally the voice but not detected, and the virtual detection
It is not recommended to compile individual modules in the WEBRTC separately for use.
Yesterday, I was fortunate enough to ask the Google forum about the delay in computing the AECM module, and Project member said churn this delay actually didn't help the AECM effect, which only sped up the convergence of the built-in latency estimator when the AECM started, and if the delay in the update was incorrect, it would even make AE The CM built-in delay
I recently encountered a problem about how to read a complete frame of data when reading an h264 file. Using the elecard stream analyzer tool, combined with the new generation of video compression coding standard-h264/AVC (second edition), and find and summarize on the Internet as follows:
First, the nal syntax, titles syntax, and nal_unit_type semantics must be known:
The above two figures are taken from
In the previous article, we used ffmpeg to separate the audio and video data from a multimedia container, but it is possible that the data could not be decoded correctly. Why is it? Because the decoder needs to be configured before decoding the data, it is typical of the current popular HD coded "Golden Partner" combination H264 + AAC . This article will describe the key decoding configuration parameters of H264
Current Location: Home > Streaming Media Development > streaming Media Development >
Streaming Media Essentials Brief: How to get pts in H264 data.
Jackyhwei posted on 2011-10-08 09:15 click: 2,105 times
From: Hi.baidu.com/zorru
The Base_clock of PTS here are calculated in terms of 1000 (milliseconds), and if reused in TS, the Base_clock is 90k, so it should be multiplied by 90. About the
Then the previous article
http://blog.csdn.net/openswc/article/details/51597755
Second, the ffmpeg will be YUV encoded as. H264
1. Download and install FFmpeg
./configure--enable-libx264--ENABLE-GPL--enable-sharedMakeMake install
2. Use the installed ffmpeg with the command to encode YUV as. H264
Ffmpeg-s 480x272-i ds_480x272.yuv-r 25-vcodec libx264 ds2.h264
YUV
When deploying WEBRTC or SIP-to-peer scenarios, you will often encounter environments that are not penetrated by peerThis is where the tunserver comes in.Here we use turnserver-0.7.3Download confuse dependent librarieswget http://savannah.nongnu.org/download/confuse/confuse-2.7.tar.gzTar zxvf confuse-2.7.tar.gzCD confuse*./configureMake make installDownloadwget http://downloads.sourceforge.net/project/turnserver/turnserver-0.7.3.tar.bz2Tar jxvf turns
This article original from Http://blog.csdn.net/voipmaker reprint annotated source.The latest version of TELEMCU adds Android phone-side WEBRTC video conferencing capabilities, Android phone installs Chrome browser after loading TELEMCU WEBRTC client TeleWeb can directly participate in video conferencing,At the same time, TeleWeb can support two WEBRTC client-to-
Transferred from: http://www.cnblogs.com/lingyunhu/p/4232348.htmlToss for one weeks to finally set up the environment of Kurento (development stage of the product, some bugs to solve their own), so write a separate document to introduce.The following starts to introduce Kurento, the article from the blog Garden Rtc.blacker, reproduced please explain the source.What is Kurento?Video conferencing involves a one-to-many, many-to-many, broadcast, transcoding, mixing, co-screen, recording, which requ
WebRTC Point-to-point video calling system Main functions:1, based on the WebSocket online user list;2, use WebSocket as signaling channel, build WEBRTC video call.Github:https://github.com/graceup/webrtcDevelopment Ide:myeclipse 8.6 Engineering Code: UTF-8Environmental requirements: 1, TOMCAT requires more than 7.0 of the versionNote: When deploying, you need to change "ws://localhost:8080/" in the Js/con
WebRTC really is not very good to get, currently only the PC-side web page and mobile phone-side web page video. But there are still some problems. 1, both must use Firefox 2, feel pc-side camera shot out of the screen can also, the phone side a little bit of spending 3, enter the room after a period of time to show two video ~~~~APPRTC demo has not been tuned, the problem in Turnserver , and then sent the article. There are a lot of APPRTC on the Int
Google's Turnserver download method:svn checkout http://rfc5766-turn-server.googlecode.com/svn/branches/v3.2/ Rfc5766-turn-server-read-onlyAbout the application of WEBRTC Google gives an example:https://apprtc.appspot.com/(need FQ, sometimes fq may not be able to land, it is estimated that the use of too many people)I was always curious about the way he used turn, and then finally figured out what was going on. Take a look at the following characters:
reproduced in the original: http://www.cnblogs.com/mod109/p/5469799.html thank you very much.
The WEBRTC audio processing module is divided into noise reduction ns, Echo cancellation AEC(Echo control Acem), Automatic control gain AGC, Mute detection section. In addition WEBRTC has encapsulated a set of audio processing module APM, if it is not a special need, if users want to use the echo cancellation and
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 Audio captureLet's first introduce the interface concepts in WE
[Transfer to]WEBRTC Learning: Deploying Stun and turn serversHttp://www.cnblogs.com/lingdhox/p/4209659.htmlThe WEBRTC-to-peer penetration part is implemented by Libjingle.The sequence of steps is probably this:1. Try direct Connect.2. Penetrate through the stun server3. Cannot penetrate through the turn server relay.Stun server is relatively simple. There are also many public stun servers available for test
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 Audio captureLet's first introduce the interface concepts in WEBRTC t
This article original from Http://blog.csdn.net/voipmaker reprint annotated source.Based on WEBRTC technology, you can achieve point-to-point audio and video, instant messaging, video conferencing, and the latest system components include:Teleice NAT Traversal server:Standard-based NAT traversal protocol ICE for NAT traversal, audio-video-to-peer transmissionSingle machine supports tens of thousands of concurrentTELEMCU Video Conferencing Server:Imple
Very interesting website http://io13webrtc.appspot.com/#1HTML5 about using WEBRTC http://www.html5rocks.com/en/tutorials/getusermedia/intro/HTML5 example of setting resolution https://simpl.info/getusermedia/constraints/HTML5 examples of various special effects http://webcamtoy.com/zh/app/Examples of HTML5 recordings http://www.webaudiodemos.appspot.com/AudioRecorder/index.htmlGoogle's latest HTML5-based code HTTPS://GITHUB.COM/GOOGLECHROME/WEBRTCSIPM
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 audio and video is not synchronized, it is possible to cause delay, lag, etc. that affect the user experience very much
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