Get-ChildItem - Optimize?

# Get Episodes
Get-ChildItem $showDirectory -Recurse -File | Where-Object { $_.Extension -in (".mp4", ".mkv", ".avi", ".m4v", ".mpg") } | ForEach-Object {

    $insertQuery = @"
    INSERT INTO Episodes VALUES ('$($_.Directory.Parent.Name -replace "'", "")',
                                '$($_.Directory.Name)',
                                '$($_.Name -replace "'", "")',
                                '$($_.Length)',
                                '$((ReadableFileSize $_.Length))',
                                '$((VideoDurationSeconds $_.FullName))',
                                '$((ReadableDuration $_.FullName))',
                                '$((Get-VideoResolution $_.FullName))',
                                '$($_.Extension)',
                                '$($_.LastWriteTime)',
                                '$($_.CreationTime)',
                                GETDATE())
"@
    Invoke-Sqlcmd -ConnectionString $connectionString -Query $insertQuery -ErrorAction Stop
}