Tapo C520WS audio not working
**Describe The Problem:**
Ok, so if i have audio disabled it works fine and everything but i dont get any audio if i have it enabled then the stream will not start


**Logs:**

```
[Camera FFmpeg] [Driveway] Video stream requested: 1280 x 720, 30 fps, 299 kbps
[Camera FFmpeg] [Driveway] Starting video stream: 1280 x 720, 30 fps, 299 kbps (AAC-eld)
[Camera FFmpeg] [Driveway] Stream command: ffmpeg -rtsp_transport tcp -re -i rtsp://syno:password@ip:554/Sms=2.unicast -an -sn -dn -codec:v libx264 -pix_fmt yuv420p -color_range mpeg -r 30 -f rawvideo -preset ultrafast -tune zerolatency -filter:v scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease,scale=trunc(iw/2)*2:trunc(ih/2)*2 -b:v 299k -payload_type 99 -ssrc 7384993 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params 9fI/Kb9CRCvGA1zZqt/KIahC56fmc10rZcRomWIE srtp://192.168.1.62:55681?rtcpport=55681&pkt_size=100 -vn -sn -dn -codec:a libfdk_aac -profile:a aac_eld -flags +global_header -f null -ar 16k -b:a 24k -ac 1 -payload_type 110 -ssrc 9530555 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params AgRUx8f3LwXVhv0wpdTR9K7/aY2UHIVaP3OPbBuC srtp://192.168.1.62:64449?rtcpport=64449&pkt_size=188 -loglevel level+verbose -progress pipe:1
[Camera FFmpeg] [Driveway] [info] ffmpeg version 4.4.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2021 the FFmpeg developers
[Camera FFmpeg] [Driveway] [info]   built with gcc 8 (Debian 8.3.0-6)
[Camera FFmpeg] [Driveway] [info]   configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
[Camera FFmpeg] [Driveway] [info]   libavutil      56. 70.100 / 56. 70.100
[Camera FFmpeg] [Driveway] [info]   libavcodec     58.134.100 / 58.134.100
[Camera FFmpeg] [Driveway] [info]   libavformat    58. 76.100 / 58. 76.100
[Camera FFmpeg] [Driveway] [info]   libavdevice    58. 13.100 / 58. 13.100
[Camera FFmpeg] [Driveway] [info]   libavfilter     7.110.100 /  7.110.100
[Camera FFmpeg] [Driveway] [info]   libswscale      5.  9.100 /  5.  9.100
[Camera FFmpeg] [Driveway] [info]   libswresample   3.  9.100 /  3.  9.100
[Camera FFmpeg] [Driveway] [info]   libpostproc    55.  9.100 / 55.  9.100
[Camera FFmpeg] [Driveway] [tcp @ 0x73b0ec0] [verbose] Starting connection attempt to ip port 554
[Camera FFmpeg] [Driveway] [tcp @ 0x73b0ec0] [verbose] Successfully connected to ip port 554
[Camera FFmpeg] [Driveway] [rtsp @ 0x73ade00] [verbose] SDP:
[Camera FFmpeg] [Driveway] v=0
[Camera FFmpeg] [Driveway] o=- 1712375888464302 1 IN IP4 ip
[Camera FFmpeg] [Driveway] s=Session streamed by "ssrtspd"
[Camera FFmpeg] [Driveway] i=1,2_high.unicast
[Camera FFmpeg] [Driveway] t=0 0
[Camera FFmpeg] [Driveway] a=tool:LIVE555 Streaming Media v2020.08.12
[Camera FFmpeg] [Driveway] a=type:broadcast
[Camera FFmpeg] [Driveway] a=control:*
[Camera FFmpeg] [Driveway] a=range:npt=0-
[Camera FFmpeg] [Driveway] a=x-qt-text-nam:Session streamed by "ssrtspd"
[Camera FFmpeg] [Driveway] a=x-qt-text-inf:1,2_high.unicast
[Camera FFmpeg] [Driveway] m=video 0 RTP/AVP 96
[Camera FFmpeg] [Driveway] c=IN IP4 0.0.0.0
[Camera FFmpeg] [Driveway] b=AS:500
[Camera FFmpeg] [Driveway] a=rtpmap:96 H264/90000
[Camera FFmpeg] [Driveway] a=fmtp:96 packetization-mode=1;profile-level-id=4D0032;sprop-parameter-sets=Z00AMoqKUDwBE/LNkAAAPoAAB1MAQA==,aO48gA==
[Camera FFmpeg] [Driveway] a=control:track1
[Camera FFmpeg] [Driveway] m=audio 0 RTP/AVP 8
[Camera FFmpeg] [Driveway] c=IN IP4 0.0.0.0
[Camera FFmpeg] [Driveway] b=AS:64
[Camera FFmpeg] [Driveway] a=control:track2
[Camera FFmpeg] [Driveway] 
[Camera FFmpeg] [Driveway] [rtsp @ 0x73ade00] [verbose] setting jitter buffer size to 0
[Camera FFmpeg] [Driveway] [rtsp @ 0x73ade00] [verbose] setting jitter buffer size to 0
[Camera FFmpeg] [Driveway] [h264 @ 0x73b3500] [verbose] Reinit context to 1920x1088, pix_fmt: yuvj420p
[Camera FFmpeg] [Driveway] [warning] Guessed Channel Layout for Input Stream #0.1 : mono
[Camera FFmpeg] [Driveway] [info] Input #0, rtsp, from 'rtsp://syno:password@ip:554/Sms=2.unicast':
[Camera FFmpeg] [Driveway] [info]   Metadata:
[Camera FFmpeg] [Driveway] [info]     title           : Session streamed by "ssrtspd"
[Camera FFmpeg] [Driveway] [info]     comment         : 1,2_high.unicast
[Camera FFmpeg] [Driveway] [info]   Duration: N/A, start: 0.000000, bitrate: N/A
[Camera FFmpeg] [Driveway] [info]   Stream #0:0: Video: h264 (Main), 1 reference frame, yuvj420p(pc, progressive, left), 1920x1080 (1920x1088), 15 fps, 25 tbr, 90k tbn, 30 tbc
[Camera FFmpeg] [Driveway] [info]   Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
[Camera FFmpeg] [Driveway] [fatal] Unknown encoder 'libfdk_aac'
[Camera FFmpeg] [Driveway] [AVIOContext @ 0x73d6ec0] [verbose] Statistics: 0 seeks, 0 writeouts
[Camera FFmpeg] [Driveway] FFmpeg exited with code: 1 and signal: null (Error)
[Camera FFmpeg] [Driveway] Stopped video stream.
```


**Homebridge Config:**

```json
{
    "name": "Camera FFmpeg",
    "videoProcessor": "ffmpeg",
    "cameras": [
        {
            "name": "Driveway",
            "manufacturer": "TP-Link",
            "model": "C520WS",
            "serialNumber": "22396W8004786",
            "motion": false,
            "unbridge": true,
            "videoConfig": {
                "source": "-rtsp_transport tcp -re -i rtsp://syno:password@ip:554/Sms=2.unicast",
                "maxStreams": 2,
                "maxWidth": 1920,
                "maxHeight": 1080,
                "maxFPS": 30,
                "maxBitrate": 3000,
                "packetSize": 100,
                "audio": true,
                "debug": true
            }
        }
    ],
    "platform": "Camera-ffmpeg"
}
```


**Environment:**

* **Node.js Version**: v20.9.0
* **NPM Version**: v10.2.3
* **Homebridge Version**: v1.7.0
* **Homebridge Camera FFmpeg Version**: v3.1.4
* **Homebridge Config UI X Plugin Version**: v4.56.1
* **Operating System**: Synology Nas DS918+

Also the camera is connected to synology surveillance station then i use the rtsp share stream path in the plugin
