Extension/GifPalette.RoughDraft.Extension.ps1
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<# .SYNOPSIS Gif Palette Extension .DESCRIPTION The Gif Palette Extension generates a palette for high quality gif creation. It will be automatically called when converting .gif files. .EXAMPLE Convert-Media -InputPath .\a.mp4 -OutputPath .gif #> [Management.Automation.Cmdlet("Convert","Media")] param( # If set, will use a difference-based palette. These put more focus on the motion than the background. [Switch] $DifferenceBasedPalette ) process { if ($outputPath -notlike '*.gif') { return } $PalettePath = Join-Path ([IO.Path]::GetTempPath()) "palette$(Get-Random).png" $ProgId = Get-Random if (-not $psBoundParameters.Start) { $start = [TimeSpan]::FromMilliseconds(0) } if (-not $PSBoundParameters.End) { $end = $mi.duration } $duration = $end - $start $FilterList = @() if ($FrameRate) { $FilterList+="fps=$FrameRate" } if ($NewWidth) { $FilterList+="scale=$($NewWidth):-1:flags=lanczos" } if ($FilterList) { $PaletteFilters = "`"$($FilterList -join ','),palettegen=stats_mode=$(if ($DifferenceBasedPalette) { 'diff'} else {'full'})`"" $paletteParams = @("-vf", $paletteFilters) $PaletteUseFilters = "`"$($FilterList -join ',') [x]; [x][1:v] paletteuse`"" $lavFiParams = @("-lavfi", $paletteUseFilters) } else { $PaletteFilters = 'palettegen' $PaletteUseFilters = 'paletteuse' $paletteParams = @("-vf", $paletteFilters) $lavFiParams = @("-lavfi", $paletteUseFilters) } #region Generate the palette Write-Progress "Generating Palette" " " -Id $ProgId & $ffmpeg -ss "$start" -t "$($duration.TotalSeconds)" -i $ri @paletteParams "$palettePath" -y 2>&1 | ForEach-Object { Write-Verbose $_ } Write-Progress "Generating Palette" "Completed " -Id $ProgId -Completed #endregion Generate the palette '-i' "$palettePath" "-lavfi" $paletteUseFilters } |