RTCMultiConnection-v1.7 and MultiRTC updated.
RecordRTC/PHP/FFmpeg synced audio/video recording demo added.

This demo can record both audio/video; and merge both files in single
WebM container.

Both audio video are synced using ffmpeg commands!

You can record longest possible audio/video files. At least, minimum 5
minutes recording is tested!

issues?
1. Browser hangs for at least 30 seconds for encoding large video webp
array into WebM.
2. Video is not 100% smooth....though it is at least 98% stable!

One thing you MUST NEVER forget; you MUST be using latest ffmpeg
installation; at least the one which supports "libvpx" and "libvorbis".