enabling audio causes live stream to fail
Hey! @SeydX FANTASTIC plugin!! I will 100% be donating as soon as I can figure this issue out!!!! 

So I have 2 Yi 1080p Dome Cams (hacked) and I have set up the RTSP stream and the video works however as soon as I enable audio and try to put the audio RTSP stream it fails to play the stream in HomeKit and in CameraUI.
How should I go about getting the audio to work? 

**Here is the config for one of the cameras (this config is set to audio **disabled** and that's when the live stream works)** 
                   "name": "Front of House",
                    "videoConfig": {
                        "source": "-i rtsp://192.168.2.35/ch0_0.h264",
                        "audio": false,
                        "debug": true


**here is the config for the same camera when the audio is enabled** 
                    "name": "Front of House",
                       "videoConfig": {
                        "source": "-i rtsp://192.168.2.35/ch0_0.h264",
                        "audio": true,
                        "debug": true

**once i do that and restart homebridge as soon as i open the homekit cam i get this error in homebridge:**
 [Camera FFmpeg] FFmpeg exited with code: 1 and signal: null (Error)
 [Camera FFmpeg] [Front of House] Stopped video stream.

**Now i know I'm missing something because in the Yi Hack has a UI by going to its IP and when i go to the RTSP tab there is enable audio and a stream dedicated to it but i do not know where to input that into the config of this plugin. 
Here is what the RTSP stream for the audio of my camera looks like:**

rtsp://192.168.2.35/ch0_2.aac

Please help me out. :)
