Extension/Overlay.RoughDraft.Extension.ps1
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<# .Synopsis overlay .Description Overlay a video source on top of the input. .Link https://ffmpeg.org/ffmpeg-filters.html#overlay #> [Management.Automation.Cmdlet('Join', 'Media')] param( # Overlay a video source on top of the input. [Parameter(Mandatory)] [switch] $Overlay, # set the x expression [string] [Alias('overlay_x')] $OverlayX, # set the y expression [string] [Alias('overlay_y')] $OverlayY, # Action to take when encountering EOF from secondary input [switch] [Alias('overlay_eof_action')] $OverlayEof_action, # specify when to evaluate expressions [switch] [Alias('overlay_eval')] $OverlayEval, # force termination when the shortest input terminates [switch] [Alias('overlay_shortest')] $OverlayShortest, # set output format [switch] [Alias('overlay_format')] $OverlayFormat, # repeat overlay of the last overlay frame [switch] [Alias('overlay_repeatlast')] $OverlayRepeatlast, # alpha format [switch] [Alias('overlay_alpha')] $OverlayAlpha ) $filterName = 'overlay' $myCmd = $MyInvocation.MyCommand $filterArgs = @( foreach ($kv in $PSBoundParameters.GetEnumerator()) { $match= foreach ($paramAlias in $myCmd.Parameters[$kv.Key].Aliases) { $m = [Regex]::Match($paramAlias, '_(?<p>.+)$') if ($m.Success) { $m;break } } if ($match.Success) { $v = $kv.Value $p = $match.Value -replace '^_' if ($v -is [switch]) { $v = ($v -as [bool] -as [int]).ToString().ToLower() } if ($v -is [string] -and $myCmd.Parameters[$kv.Key].ValidateSet) { $v = $v.ToLower() } "$p=$($v)" } } ) -join ':' '-filter_complex' "$filterName=$filterArgs" -replace "=$" |