if (!(Test-Path -Path "c" -PathType Container)) {
    mkdir "c"
}
$files = Get-ChildItem  ("*.mp4", "*.mov")
$index = 0
$total = $files.Length
foreach ($file in $files) {
    $index++
    Write-Host "***** ($index/$total) $($file.Name)" -ForegroundColor Magenta
    ffmpeg -hide_banner -i $file -map_metadata 0 -movflags use_metadata_tags -c:v libx265 -preset slow -crf 26 -c:a aac -b:a 64k $("c\" + $file.BaseName + ".mp4")
}