Can't stream: "syntax error near unexpected token `('"
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**Describe The Problem:**
New install. Fails to start the steam with `[Camera-ffmpeg] [Driveway Cam] FFmpeg exited with code: 255 and signal: null (Unexpected)`

**To Reproduce:**
Fresh install on RPi 3B using the configuration below.

**Logs:**
```
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] Video stream requested: 1280 x 720, 30 fps, 299 kbps
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] Starting video stream: 1280 x 720, 5 fps, 299 kbps
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] Stream command: /usr/lib/node_modules/homebridge-camera-ffmpeg/node_modules/ffmpeg-for-homebridge/ffmpeg -i file:///media/latest-1.mp4 -loop -an -sn -dn -codec:v h264_omx -pix_fmt yuv420p -color_range mpeg -r 5 -f rawvideo -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 5046375 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params jy66znCgygZ2TaR3uUZvM+mKf3xJD+Dsr3tBu7dl srtp://192.168.21.102:63359?rtcpport=63359&pkt_size=1316 -loglevel level+verbose
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info] ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1+deb9u1) 20170516
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]   configuration: --pkgconfigdir=/build/workspace/lib/pkgconfig --prefix=/build/workspace --pkg-config-flags=--static --extra-cflags=-I/build/workspace/include --extra-ldflags=-L/build/workspace/lib --extra-libs='-lpthread -lm' --enable-static --disable-debug --disable-shared --disable-ffplay --disable-doc --enable-openssl --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-runtime-cpudetect --enable-libfdk-aac --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-decoder=h264 --enable-network --enable-protocol=tcp --enable-libspeex --enable-demuxer=rtsp --enable-omx-rpi --enable-mmal --enable-indev=alsa --enable-outdev=alsa
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libavutil      56. 51.100 / 56. 51.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libavcodec     58. 91.100 / 58. 91.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libavformat    58. 45.100 / 58. 45.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libavdevice    58. 10.100 / 58. 10.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libavfilter     7. 85.100 /  7. 85.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libswscale      5.  7.100 /  5.  7.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libswresample   3.  7.100 /  3.  7.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   libpostproc    55.  7.100 / 55.  7.100
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [h264 @ 0x426b7d0] [verbose] Reinit context to 1920x1088, pix_fmt: yuv420p
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [warning] Guessed Channel Layout for Input Stream #0.0 : mono
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info] Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file:///media/latest-1.mp4':
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   Metadata:
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     major_brand     : mp42
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     minor_version   : 0
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     compatible_brands: mp42isom
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     creation_time   : 2020-10-13T23:16:00.000000Z
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   Duration: 00:00:59.84, start: 0.000000, bitrate: 983 kb/s
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     Stream #0:0(und): Audio: pcm_alaw (alaw / 0x77616C61), 8000 Hz, mono, s16, 64 kb/s (default)
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     Metadata:
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]       creation_time   : 2020-10-13T23:16:00.000000Z
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     Stream #0:1(und): Video: h264 (Main), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1920x1080 (1920x1088), 939 kb/s, 15 fps, 15 tbr, 90k tbn, 30 tbc (default)
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]     Metadata:
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]       creation_time   : 2020-10-13T23:16:00.000000Z
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]       encoder         : JVT/AVC Coding
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] Stream mapping:
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   Stream #0:1 -> #0:0 (h264 (native) -> h264 (h264_omx))
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info]   Stream #0:0 -> #0:1 (pcm_alaw (native) -> pcm_mulaw (native))
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [info] Press [q] to stop, [?] for help
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [h264 @ 0x42a5090] [verbose] Reinit context to 1920x1088, pix_fmt: yuv420p
Oct 14 12:58:58 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [Parsed_scale_0 @ 0x4268510] [verbose] w:min(1280,iw) h:min(720,ih) flags:'bicubic' interl:0
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [Parsed_scale_1 @ 0x435ab30] [verbose] w:trunc(iw/2)*2 h:trunc(ih/2)*2 flags:'bicubic' interl:0
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [graph 0 input from stream 0:1 @ 0x4945750] [verbose] w:1920 h:1080 pixfmt:yuv420p tb:1/90000 fr:15/1 sar:0/1
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [Parsed_scale_0 @ 0x4268510] [verbose] w:1920 h:1080 fmt:yuv420p sar:0/1 -> w:1280 h:720 fmt:yuv420p sar:0/1 flags:0x4
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] [Parsed_scale_1 @ 0x435ab30] [verbose] w:1280 h:720 fmt:yuv420p sar:0/1 -> w:1280 h:720 fmt:yuv420p sar:0/1 flags:0x4
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam]
Oct 14 12:58:59 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] FFmpeg exited with code: 255 and signal: null (Unexpected)
Oct 14 12:59:03 homebridge[30856]: [Camera-ffmpeg] [Driveway Cam] Stopped video stream.
```
When running the Stream command I get this:
```
$ /usr/lib/node_modules/homebridge-camera-ffmpeg/node_modules/ffmpeg-for-homebridge/ffmpeg -i file:///media/latest-1.mp4 -loop -an -sn -dn -codec:v h264_omx -pix_fmt yuv420p -color_range mpeg -r 5 -f rawvideo -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 5046375 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params jy66znCgygZ2TaR3uUZvM+mKf3xJD+Dsr3tBu7dl srtp://192.168.21.102:63359?rtcpport=63359&pkt_size=1316 -loglevel level+verbose
-bash: syntax error near unexpected token `('
```
Running the command without this section `,scale=trunc(iw/2)*2:trunc(ih/2)*2` results in
```
$ ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1+deb9u1) 20170516
  configuration: --pkgconfigdir=/build/workspace/lib/pkgconfig --prefix=/build/workspace --pkg-config-flags=--static --extra-cflags=-I/build/workspace/include --extra-ldflags=-L/build/workspace/lib --extra-libs='-lpthread -lm' --enable-static --disable-debug --disable-shared --disable-ffplay --disable-doc --enable-openssl --enable-gpl --enable-version3 --enable-nonfree --enable-pthreads --enable-libvpx --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-runtime-cpudetect --enable-libfdk-aac --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-decoder=h264 --enable-network --enable-protocol=tcp --enable-libspeex --enable-demuxer=rtsp --enable-omx-rpi --enable-mmal --enable-indev=alsa --enable-outdev=alsa
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
^C

[4]+  Stopped                 /usr/lib/node_modules/homebridge-camera-ffmpeg/node_modules/ffmpeg-for-homebridge/ffmpeg -i file:///media/latest-1.mp4 -loop -an -sn -dn -codec:v h264_omx -pix_fmt yuv420p -color_range mpeg -r 5 -f rawvideo -filter:v scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease -b:v 299k -payload_type 99 -ssrc 5046375 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params jy66znCgygZ2TaR3uUZvM+mKf3xJD+Dsr3tBu7dl srtp://192.168.21.102:63359?rtcpport=63359
```

**Homebridge Config:**

```{
                        "platform": "Camera-ffmpeg",
                        "porthttp": 8080,
                        "cameras": [
                                {
                                "name": "Driveway Cam",
                                "motion": true,
                                "motionTimeout": 15,
                                "videoConfig": {
                                        "source": "-i file:///media/latest-1.mp4 -loop",
                                        "stillImageSource": "-i file:///media/latest-1.jpg",
                                        "maxStreams": 2,
                                        "maxFPS": 5,
                                        "unbridge": true,
                                        "vcodec": "h264_omx",
                                        "debug": true
                                }
                        },{
                                "name": "Front Lawn Cam",
                                "motion": true,
                                "motionTimeout": 15,
                                "videoConfig": {
                                        "source": "-i /media/latest-2.mp4 -loop",
                                        "stillImageSource": "-i /media/latest-2.jpg",
                                        "maxStreams": 2,
                                        "maxFPS": 5,
                                        "unbridge": true,
                                        "vcodec": "h264_omx"
                                }
                        }]
                }
```

**Environment:**

* **Node.js Version**: v12.19.0
* **NPM Version**: 6.14.8
* **Homebridge Version**: 1.1.6
* **Homebridge Camera FFmpeg Version**: homebridge-camera-ffmpeg@3.0.3
* **Homebridge Config UI X Plugin Version**: Not used
* **Operating System**: Raspbian
