mp3-to-mp4-michael.ps1

$outDir = ".\out\"
$sourceDir = ".\in\"
$historyDir = ".\history\"
$workDir = ".\working\"
$imageFile = "michael.png"
$inputFormat = "mp3"
$outputFormat = "mp4"

mkdir "$sourceDir" -Force
mkdir "$outDir" -Force
mkdir "$historyDir" -Force
mkdir "$workDir" -Force

$inFiles = Get-Childitem $sourceDir -Filter "*.$inputFormat"

ForEach ($f in $inFiles) {
        $newFilename = $f.Name.Replace(".mp3", ".mp4")

        ffmpeg -i $f.FullName -loop 1 -i $imageFile  -c:a copy -c:v libx264 -preset ultrafast -tune stillimage -shortest "$workDir$newFilename"
        $f | Move-Item -Verbose -destination $historyDir
        Move-Item -Verbose -Path "$workDir$newFilename" -destination $outDir
}