showspectrumpic

Convert input audio to a single video frame, representing the audio frequency spectrum.

The filter accepts the following options:

'size, s'

Specify the video size for the output. For the syntax of this option, check the (ffmpeg-utils)"Video size" section in the ffmpeg-utils manual. Default value is 4096x2048.

'mode'

Specify display mode.

It accepts the following values:

'combined'

all channels are displayed in the same row

'separate'

all channels are displayed in separate rows

Default value is 'combined'.

'color'

Specify display color mode.

It accepts the following values:

'channel'

each channel is displayed in a separate color

'intensity'

each channel is displayed using the same color scheme

'rainbow'

each channel is displayed using the rainbow color scheme

'moreland'

each channel is displayed using the moreland color scheme

'nebulae'

each channel is displayed using the nebulae color scheme

'fire'

each channel is displayed using the fire color scheme

'fiery'

each channel is displayed using the fiery color scheme

'fruit'

each channel is displayed using the fruit color scheme

'cool'

each channel is displayed using the cool color scheme

'magma'

each channel is displayed using the magma color scheme

'green'

each channel is displayed using the green color scheme

'viridis'

each channel is displayed using the viridis color scheme

'plasma'

each channel is displayed using the plasma color scheme

'cividis'

each channel is displayed using the cividis color scheme

'terrain'

each channel is displayed using the terrain color scheme

Default value is 'intensity'.

'scale'

Specify scale used for calculating intensity color values.

It accepts the following values:

'lin'

linear

'sqrt'

square root, default

'cbrt'

cubic root

'log'

logarithmic

'4thrt'

4th root

'5thrt'

5th root

Default value is 'log'.

'fscale'

Specify frequency scale.

It accepts the following values:

'lin'

linear

'log'

logarithmic

Default value is 'lin'.

'saturation'

Set saturation modifier for displayed colors. Negative values provide alternative color scheme. 0 is no saturation at all. Saturation must be in [-10.0, 10.0] range. Default value is 1.

'win_func'

Set window function.

It accepts the following values:

'rect'

'bartlett'

'hann'

'hanning'

'hamming'

'blackman'

'welch'

'flattop'

'bharris'

'bnuttall'

'bhann'

'sine'

'nuttall'

'lanczos'

'gauss'

'tukey'

'dolph'

'cauchy'

'parzen'

'poisson'

'bohman'

Default value is hann.

'orientation'

Set orientation of time vs frequency axis. Can be vertical or horizontal. Default is vertical.

'gain'

Set scale gain for calculating intensity color values. Default value is 1.

'legend'

Draw time and frequency axes and legends. Default is enabled.

'rotation'

Set color rotation, must be in [-1.0, 1.0] range. Default value is 0.

'start'

Set start frequency from which to display spectrogram. Default is 0.

'stop'

Set stop frequency to which to display spectrogram. Default is 0.