home-assistant.io/source/_components/binary_sensor.ffmpeg_noise.markdown

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page	FFmpeg Noise Binary Sensor	Instructions on how to integrate an FFmpeg-based noise binary sensor	2016-08-25 08:00	true	false	true	true	ffmpeg.png	Image Processing	0.27

The ffmpeg platform allows you to use any video or audio feed with FFmpeg for various sensors in Home Assistant.

If the `ffmpeg` process is broken, the sensor will be unavailable. To control the ffmpeg process of sensor, use the service *ffmpeg.start*, *ffmpeg.stop*, *ffmpeg.restart*.

{% linkable_title Configuration %}

To add FFmpeg with noise detection to your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
binary_sensor:
  - platform: ffmpeg_noise
    input: FFMPEG_SUPPORTED_INPUT

Configuration variables:

• input (Required): An FFmpeg-compatible input file, stream, or feed.
• name (Optional): Override the name of your camera.
• initial_state (Optional): Default true. Start ffmpeg with home-assistant.
• peak (Optional): Default -30. The threshold of detecting noise, in dB. 0 is very loud and -100 is low.
• duration (Optional): Default 1 second. How long the noise needs to be over the peak to trigger the state.
• reset (Optional): Default 20 seconds. The time to reset the state after no new noise is over the peak.
• extra_arguments (Optional): Extra options to pass to ffmpeg, like audio frequency filtering.
• output (Optional): Allows you to send the audio output of this sensor to an Icecast server or other FFmpeg-supported output, e.g., to stream with Sonos after a state is triggered.

To experiment with values:

$ ffmpeg -i YOUR_INPUT -vn -filter:a silencedetect=n=-30dB:d=1 -f null -