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.
