+description: >
+ Adjust an audio stream's volume level. This filter is based on the
+ 'normalize' utility
+parameters:
+ - identifier: argument
+ title: Gain
+ type: string
+ description: >
+ The gain may be indicated as a floating point value of the gain
+ adjustment.
+
+ The gain may also be indicated as a numeric value with the suffix "dB"
+ to adjust in terms of decibels.
+
+ The gain may also be set to "normalise" to normalise the volume to the
+ target amplitude -12dBFS.
+ - identifier: window
+ title: Window
+ type: integer
+ description: >
+ The number of video frames over which to smooth normalisation.
+ default: 75
+ mutable: yes
+ - identifier: normalise
+ title: Normalise
+ type: string
+ description: >
+ Normalise the volume to the specified amplitude.
+
+ The normalization may be indicated as a floating point value of the
+ relative volume
+
+ The normalisation may also be indicated as a numeric value with the
+ suffix "dB" to set the amplitude in decibels.
+ default: -12dBFS
+ mutable: yes
+ - identifier: limiter
+ title: Limiter
+ type: string
+ description: >
+ Limit all samples above the specified amplitude.
+
+ The limiting may be indicated as a floating point value of the
+ relative volume
+
+ The limiting may also be indicated as a numeric value with the suffix
+ "dB" to set the limiting amplitude in decibels.
+ default: -6dBFS
+ mutable: yes
+ - identifier: max_gain
+ title: Max gain
+ type: double
+ description: >
+ A floating point or decibel value of the maximum gain that can be
+ applied during normalisation.
+ default: 20dB
+ mutable: yes
+ - identifier: end
+ title: End gain
+ type: string
+ description: >
+ A gain value just like the Gain property. This causes the gain to be
+ interpolated from 'gain' to 'end' over the duration.
+ mutable: yes
+
+
+