Stream error with Ezviz H8C Camera
**Describe the bug**
Now I’m trying to add an EZVIZ H8C and receiving an error in home bridge console like this: 
	"Camera:: FFmpeg prebuffer process exited with error! (null) - Cannot determine format of input stream 0:0 after EOF - Error marking filters as finished - “
Stream configuration is OK in VLC. I tried with lots of them that are working OK and sending in H264 in vlc media information.


**To Reproduce**

My config is:
	 "name": "Jardin",
                    "manufacturer": "EZVIZ",
                    "model": "H8C",
                    "serialNumber": "12345679",
                    "motion": true,
                    "unbridge": true,
                    "hsv": true,
                    "prebuffering": true,
                    "forcePrebuffering": true,
                    "prebufferLength": 4,
                    "videoConfig": {
                        "source": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "subSource": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "stillImageSource": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "vcodec": "copy",
                        "acodec": "libfdk_aac",
                        "audio": true
                    },
                    "videoanalysis": {
                        "active": true
                    },
                    "motionTimeout": 15,
                    "smtp": {
                        "email": "Jardin"
                    },
                    "mqtt": {}

**Expected behavior**
Camera stream to be added

**Logs**
Jardin: FFmpeg prebuffer process exited with error! (SIGKILL) -     Last message repeated 1 times - [rtsp @ 0x7f73c58137c0] Too short RTP/HEVC packet, got 0 bytes -  -     Last message repeated 15 times - [rtsp @ 0x7f73c58137c0] Error parsing AU headers -  - [rtsp @ 0x7f73c58137c0] Too short RTP/HEVC packet, got 0 bytes -  -     Last message repeated 8 times - [rtsp @ 0x7f73c58137c0]  - Error parsing AU headers -  -     Last message repeated 1 times - [rtsp @ 0x7f73c58137c0] Too short RTP/HEVC packet, got 0 bytes - 


My config is:
	 "name": "Jardin",
                    "manufacturer": "EZVIZ",
                    "model": "H8C",
                    "serialNumber": "12345679",
                    "motion": true,
                    "unbridge": true,
                    "hsv": true,
                    "prebuffering": true,
                    "forcePrebuffering": true,
                    "prebufferLength": 4,
                    "videoConfig": {
                        "source": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "subSource": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "stillImageSource": "-i rtsp://admin:xxxx@00.00.00.00:554",
                        "vcodec": "copy",
                        "acodec": "libfdk_aac",
                        "audio": true
                    },
                    "videoanalysis": {
                        "active": true
                    },
                    "motionTimeout": 15,
                    "smtp": {
                        "email": "Jardin"
                    },
                    "mqtt": {}

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment**
- Node.js Version: vX.X
- Homebridge Version: vX.X
- Camera UI Version: vX.X
- Operating System: XXX
- Browser: XXX
