FFmpeg 6.0.1
Since* 5.0
#

Display frequency domain statistical information about the audio channels. Statistics are calculated and stored as metadata for each audio channel and for each audio frame.

It accepts the following option:

win_size

Set the window length in samples. Default value is 2048. Allowed range is from 32 to 65536.

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
  • kaiser

Default is hann.

overlap

Set window overlap. Allowed range is from 0 to 1. Default value is 0.5.

measure

Select the parameters which are measured. The metadata keys can be used as flags, default is all which measures everything. none disables all measurement.

A list of each metadata key follows: