vips.ps1

$vips_exe_path = "C:\Users\${env:USERNAME}\Downloads\vips\vipsthumbnail.exe"
$output_path = $env:VIPS_OUTPUT_PATH ?? $null
$cli_opts = "--vips-info --linear --kernel=mks2021 --output-profile=srgb --size=752x"
$quality = 60
$q_str = "[Q=${quality}]"

Get-ChildItem -Filter *.png -Recurse | ForEach-Object {
    $fn = $_.BaseName
    $op_path = $output_path ?? $_.DirectoryName
    $op_str = "--path={0}" -f (Join-Path $op_path "${fn}.avif${q_str}")
    $cli = "${vips_exe_path} ${op_str} ${cli_opts}"
    Write-Debug "$cli"
    Invoke-Command $cli
}