G4 Doorbell Stops Streaming After ~20 Seconds (Even After v5.3.3)
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**Describe The Problem:**
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With the latest version (v5.3.4) of `homebridge-unifi-protect` installed, my G4 Doorbell stops streaming after 20 seconds. The release notes for v5.3.3 state that this issue was fixed, but I can reproduce the issue until v5.3.0 when streaming works as expected.

Once the stream freezes, if I leave the feed running on my device it eventually states "No response. This camera is not responding." Exiting and re-entering the camera feed restarts the stream, but the thumbnail does say "No response."

FWIW this doesn't seem to be happening with my other mic-enabled cameras, specifically G4 Bullets.

Happy to help debug as best I can.

**To Reproduce:**
<!-- Steps to reproduce the behavior. -->
1. In the Home app, select a G4 Doorbell.
2. Wait 20 seconds
3. Feed freezes with a message in Homebridge logs

**Logs:**
<!-- In order to be helpful, include the relevant logs from Homebridge, if applicable. -->

```
[2/15/2022, 11:25:56 AM] [UniFi Protect] Thunderdome [UDM-PRO] Front Doorbell [UVC G4 Doorbell]: Streaming request from 192.168.1.172: 1280x720@30fps, 299 kbps. Using RTSP stream profile: 1600x1200@30fps (High), 6000 kbps.
[2/15/2022, 11:26:16 AM] [UniFi Protect] Thunderdome [UDM-PRO] Front Doorbell [UVC G4 Doorbell]: FFmpeg process ended unexpectedly with an exit code of 0.
[2/15/2022, 11:26:16 AM] [UniFi Protect] Thunderdome [UDM-PRO] Front Doorbell [UVC G4 Doorbell]: Stopped video streaming session.
[2/15/2022, 11:26:16 AM] [UniFi Protect] Thunderdome [UDM-PRO] Front Doorbell [UVC G4 Doorbell]: FFmpeg exited unexpectedly. Increasing logging output of FFmpeg for the next 5 minutes to provide additional detail for future attempts to stream video.
```

**Homebridge Configuration:**

```json
{
    "controllers": [
        {
            "address": "192.168.1.1",
            "password": [removed]
            "username": [removed]
        }
    ],
    "verboseFfmpeg": false,
    "platform": "UniFi Protect"
},
```

**Screenshots:**
<!-- If applicable, add screenshots to help explain your problem. -->
Video: https://drive.google.com/file/d/1boghZwwGkZYT0QAv-N_zSvWs-pfDY9no/view?usp=sharing

**Environment:**

* **Homebridge Version:** <!-- homebridge -V --> 1.4.0
* **Node Version:** <!-- node -v --> 16.13.2
* **Homebridge-UniFi-Protect Plugin Version:** 5.3.4
* **UniFi Protect Version:** <!-- Read the Protect version line from https://unifi-controller/protect/settings --> 1.21.0
* **UniFi Protect Controller Type:** <!-- UCKgen2+, UDMP, UNVR, etc. --> UDMP
* **UniFi Protect Controller Firmware Version:** <!-- Read the firmware line from https://unifi-controller/settings/general --> 1.11.0
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:**<!-- Type of Apple device you're using and associated OS version --> macOS 12.2.1, iOS 15.3.1
* **Operating System and OS Version:** <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker --> Synology DSM 7.0.1-42218 Update 2

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