I create a WebRTC with simple peer. I need to capture stream from video element and send it to peers. I use vidEl.captureStream() to get Media Stream from video element and send it to other peer. It's working but only audio and video is blackscreen(not something is display).
[Testing] I create another video element on same origin of first video element and use captureStream() and test setObject with Media Stream captured and it's working.
How to send MediaStream from video.captureStream() to new peer through WebRTC and display video from remote peer.
Sorry for bad english.
https://webrtc.github.io/samples/src/content/capture/video-pc/
This sample does'nt work on chrome, edge but fire is worked. I don't know why.
There is currently an open bug in Chrome which breaks this:
https://bugs.chromium.org/p/chromium/issues/detail?id=1156408
Related
The purpose is to play a local video on the host side and stream it on the participants' side. The video should pause and seek for everyone when the host does it.
For this, I want to capture a stream (of MediaStream type) of a local video file while it is playing and pass it into WebRTC.
Just like on the web we have a captureStream() method to capture stream from video or canvas, do we have anything similar in react-native? Or any other way to achieve the same goal?
I could not find a relative solution with the RTCView of react-native-webrtc or the react-native-video. Any type of solution or suggestion would be helpful.
Thank you in advance.
With reference to this tutorial. WebRTC - Voice Demo
The audio stream is attached to an <audio /> element for both Local and Remote audio.
I am a bit confused now. Aren't we suppose to connect the local audio to a Mic, instead of playing it?
Besides, for remote audio, is it possible for me to play the audio only without attaching it to an <audio /> element?
No, you need to create an audio element to play local audio as well.
The moment you call navigator.webkitGetUserMedia with constraints { video: false, audio: true }, you get your mic stream as a parameter on the callback. Then in order to play it, you need to attach it to an audio element, just like you would for remote audio, however, the remote audio stream will come from ontrack event instead.
But honestly, there is no reason for you to play your own local stream since the sound of your voice will overlap with the sound from the audio player. I guess they did it on the tutorial for demonstration purposes.
Btw, this tutorial you referred looks quite old, so if things don't work, that might be the reason why.
I have created a WebRTC Channel for Text Chat only.
When user wishes to have Video / Audio chat, they can turn on the Video / Audio by pressing a button.
In WebRTC, we need to call navigator.getUserMedia and add the video stream before we createOffer.
But there is a problem, because as soon as we call getUserMedia, the browser will ask user for permission to access to the Camera, even though we do not initiate a Video / Audio chat yet.
My question is, is there a way for us to call navigator.getUserMedia at later stage and add the stream into the connection?
Yes! You need to do a re-negotiation. It is just another round of Offer/Answer. It can be done at anytime, and by either side.
Check out play-from-disk-renegotation this shows a peer adding/removing and removing video after it has connected.
I have created webrtc based video chat suing peerjs.
The local and remote video element is created using control:
local:
'video id= [local_peer_id] autoplay="true" controls="true">'
remote:
and
'video id= [remote_peer_id] autoplay="true" controls="true">'
Now during the video chat if local user mute auido remote user can not hear anything and its working perfect.
Problem is with the video. If local user pause his own video he can see the video is paused but remote user still can see his video live.
on the other hand if remote user pause his video, local user still can see his video live.
Any one tell what need to do to deploy the feathure
"Pause" and "resume" video that works real time for both peer?
You need to know the difference between the HTML tags and the WebRTC streams...
You can have streams running, without having them attached to any HTML tag, and the media can still be sent and received by each peer. So, each peer can attach the stream to a audio/video tag, and the tag will only act as a player that you use to play a stream that is already running.
So, if you mute the HTML tag, you will only be muting the player, and not the stream. If you want to make anything to have effect on the other peer, you need to do stuff on the stream or in the peer connection.
In particular, to mute and resume audio or video, you need to toggle the media tracks in the media stream
// create a button to toggle video
var button = document.createElement("button");
button.appendChild(document.createTextNode("Toggle Hold"));
button.onclick = function(){
mediaStream.getVideoTracks()[0].enabled =
!(mediaStream.getVideoTracks()[0].enabled);
}
To pause/resume audio, use getAudioTracks() instead.
calling mediaStream.stop() will stop the camera
where mediaStream is the stream that you got when calling getUserMedia
Here is a working example
mediaStream.getAudioTracks()[0].stop();
mediaStream.getVideoTracks()[0].stop();
Hope this will work with new standards. Its working fine in my app.
I am using Opentok JavaScript WebRTC library to host a 1-to-1 video chat (peer-to-peer).
I can see my peer's video and hear the audio flawlessly.
My wish is to record audio / video of other chat party (remote). For this purpose, I'm using RecordRTC.
I was able to record the video of other chat participant (video is outputted to HTML video element), but, so far, I have not succeeded in recording audio (a dead-silence .wav file is as far as I could get). Using Chrome Canary (30.0.1554.0). This is my method:
var clientVideo = $('#peerdiv video')[0];//peer's video (html element)
var serverVideo = $('#myselfdiv video')[0];//my video (html element)
var context = new webkitAudioContext();
var clientStream = context.createMediaStreamSource(clientVideo.webRTCStream);
var serverStream = context.createMediaStreamSource(serverVideo.webRTCStream);
webRTCStream is a custom property i assigned to HTMLVideoElement object by modifying source of opentok js library. It contains MediaStream object linked to respective < video > element.
var recorder = RecordRTC({
video: clientVideo,
stream: clientStream
});
recorder.recordAudio();
recorder.recordVideo();
Video is recorded. Audio file is also created, it has a length that is close to video's length, however, it's completely silent (and yes, there was a lot of noise making on the other side during recording)
I've tested this with video element which displays my webcam's video stream (and audio), and it worked: both audio and video were recorded:
...
var recorder = RecordRTC({
video: serverVideo,
stream: serverStream
});
...
Is there something special about streams originating from a remote location? Any guidance on this issue would be very helpful.
This is the same issue occurs in following situations...
If not a stereo audio (dual channel audio)...i.e. it is mono audio
If audio input channels are not equal to audio output channels
If audio input device is not the default device selected on chrome
I'm still trying to find the actual issue.
I added this experiment for testing purpose... see console...
https://webrtc-experiment.appspot.com/demos/remote-stream-recording.html
Updated at: Saturday, 1 February 2014, 09:22:04 PKT
Remote audio recording is not supported; and this issue is considered as low-priority wontfix:
Support feeding remote WebRTC MediaStreamTrack output to WebAudio
Connect WebRTC MediaStreamTrack output to Web Audio API
Updated at March 28, 2016
Remote audio+video recording is now supported in RecordRTC, since Chrome version 49+.
Firefox, on the other hand, can merely record remote-audio.
If Chrome/WebRTC/Opus outputs mono audio by default and if that is the problem here, I see two options in that case:
By making opus output stereo - not sure how.
By making the RecordRTC/Recorderjs code work with mono
Or does anyone know any other recording library that works?
This actually now works fine in Firefox. I am using FireFox 29.0.1 and the AudioAPI can now work with audio streams sources grabbed from remote parties from a peer connection.
To test go to Muaz Khan's experiment page. I am not sure with what version of Firefox this rolled out but I would like to thank the team for cranking it out!
The chrome bug was moved to the AudioAPI team cr bug to track progress