Extension/SilenceRemove.RoughDraft.Extension.ps1
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<# .Synopsis Detects silence in an audio stream .Description Detects silence in an audio stream, using the silencedetect filter. .Link https://ffmpeg.org/ffmpeg-filters.html#silenceremove #> # It's an extension [Runtime.CompilerServices.Extension()] # that extends Edit-Media [Management.Automation.Cmdlet("Edit","Media")] param( # If set, will remove silence. [Parameter(Mandatory)] [switch] $RemoveSilence, # The Silence Duration [Timespan] $SilenceDuration = "00:00:00.0", # The noise tolerance (by default 0.1%) # If this is a number between 0 and 1 it will be treated as an amplitude ratio. # Otherwise, it will be treated as a decibal value. [Parameter(ValueFromPipelineByPropertyName=$true)] [double] $SilenceThreshold = 0.001, # If set, will find silence within any channel of audio [Parameter(ValueFromPipelineByPropertyName=$true)] [switch] $AnyChannel, # The number of periods of silence at the start of the sample that will be trimmed. # The default is one (which trims leading silence) # To not trim leading silence, pass a value of 0 # To trim more than one period of silence, pass a value greater than one. [Parameter(ValueFromPipelineByPropertyName=$true)] [Alias('Start_Periods','SP','StartAtPeriod')] [int] $SilenceStartPeriod = 1, # The number of periods of silence at the end of the sample that will be trimmed. # The default is 0 (trim after the last silence, but don't trim between the first and last silence) [Parameter(ValueFromPipelineByPropertyName=$true)] [Alias('Stop_Periods', 'EP', 'EndAtPeriod')] [int] $SilenceStopPeriod = 0 ) $silenceOptions = @( if ($psBoundParameters.AnyChannel) { if ($anyChannel) { "start_mode=any" "start_stop=any" } else { "start_mode=all" "stop_mode=all" } } if ($Duration) { "start_duration=$($Duration.TotalSeconds)" } "start_periods=$StartPeriod" "stop_periods=$StopPeriod" if ($threshold) { $t = if ($Threshold -ge 0 -and $Threshold -le 1){ $Threshold } else {"${Threshold}dB"} "start_threshold=$t" "stop_threshold=$t" } ) $silenceRemove = "silenceremove=$($silenceOptions -join ':')" if ($silenceRemove.EndsWith('=')) { $silenceRemove = $silenceRemove.TrimEnd('=') } '-af' $silenceRemove |