Video compressing using Powershell and FFmpeg

video_compressing.ps1

param (
	[Parameter(Mandatory, HelpMessage = "The working directory is mandatory")]
	[String]$WorkDir,
	[Parameter()]
	[String[]]$ExcludedVideos,
	[Parameter()]
	[bool]$recursive
)

$WorkDir = $WorkDir.Trim()

if ($WorkDir.EndsWith("\")) {
	$WorkDir = $WorkDir.SubString(0, $WorkDir.Length - 1)
}

if (-not (Test-Path $WorkDir)) {
	Write-Output "The working directory provided does not exist"
	Exit 1
}

function CompressVideos {
	param (
		[Parameter(Mandatory, HelpMessage = "The inner working directory is mandatory")]
		[string]$innerWorkingDirectory

	)

	if ($recursive) {
		$videos = @(Get-ChildItem -Path $WorkDir\$innerWorkingDirectory -Name -Recurse -Include *.mp4, *.mkv -Exclude *.srt)
	} else {
		$videos = @(Get-ChildItem -Path $innerWorkingDirectory -Name -Recurse -Include *.mp4, *.mkv)
	}

	foreach($excludedVideo in $ExcludedVideos) {
		[void]$videos.Remove($excludedVideo)
	}
	foreach($video in $videos) {
		$videoPath
		if($recursive) {
			$videoPath = "$WorkDir\$innerWorkingDirectory"
		} else {
			$videoPath = "$innerWorkingDirectory"
		}
		Write-Output "Compressing the video $videoPath\$video"
		ffmpeg -i $videoPath\$video -vcodec libx265 -crf 24 $videoPath\new_$video
	}
	write-output "`n"
}

if ($recursive) {
	$subDirectories = @(Get-ChildItem -Path $WorkDir -Directory -Name)

	foreach($directory in $subDirectories) {
		write-output "Compressing videos from $directory`n"
		CompressVideos $directory
	}

} else {
	CompressVideos $WorkDir
}

Exit 0