Convert webm -> mp4 , webp,jpg -> png

convert.ps1

$startTime = Get-Date

$webmConvertedCount = 0
$jpgConvertedCount = 0
$webpConvertedCount = 0
$totalFilesConverted = 0
$initialSizeMB = 0
$finalSizeMB = 0

$webmFiles = Get-ChildItem -Path .\ -Filter *.webm -Recurse

foreach ($file in $webmFiles) {
    $initialSizeMB += ($file.Length / 1MB)
    $outputFile = $file.FullName -replace "\.webm$", ".mp4"
    & ffmpeg -i $file.FullName -c:v libx264 -c:a aac -strict experimental $outputFile

    if (Test-Path $outputFile) {
        $finalSizeMB += ((Get-Item $outputFile).Length / 1MB)
        Remove-Item -Path $file.FullName -Force
        $webmConvertedCount++
    }
}

$jpgFiles = Get-ChildItem -Path .\ -Include *.jpg, *.jpeg -Recurse

foreach ($file in $jpgFiles) {
    $initialSizeMB += ($file.Length / 1MB)
    $outputFile = $file.FullName -replace "\.jpg$", ".png"
    & ffmpeg -i $file.FullName $outputFile

    if (Test-Path $outputFile) {
        $finalSizeMB += ((Get-Item $outputFile).Length / 1MB)
        Remove-Item -Path $file.FullName -Force
        $jpgConvertedCount++
    }
}

$webpFiles = Get-ChildItem -Path .\ -Filter *.webp -Recurse

foreach ($file in $webpFiles) {
    $initialSizeMB += ($file.Length / 1MB)
    $outputFile = $file.FullName -replace "\.webp$", ".png"
    & ffmpeg -i $file.FullName -vframes 1 $outputFile

    if (Test-Path $outputFile) {
        $finalSizeMB += ((Get-Item $outputFile).Length / 1MB)
        Remove-Item -Path $file.FullName -Force
        $webpConvertedCount++
    }
}

$endTime = Get-Date
$duration = $endTime - $startTime
$totalFilesConverted = $webmConvertedCount + $jpgConvertedCount + $webpConvertedCount
$differenceMB = $finalSizeMB - $initialSizeMB

Write-Host "Conversion completed!"
Write-Host ".webm files converted to .mp4: $webmConvertedCount"
Write-Host ".jpg files converted to .png: $jpgConvertedCount"
Write-Host ".webp files converted to .png: $webpConvertedCount"
Write-Host ("Total files converted: {0}" -f $totalFilesConverted)
Write-Host ("Initial data processed: {0:N2} MB" -f $initialSizeMB)
Write-Host ("Final data size after conversion: {0:N2} MB" -f $finalSizeMB)
Write-Host ("Difference in size: {0:N2} MB" -f $differenceMB)
Write-Host ("Script execution time: {0:N2} seconds" -f $duration.TotalSeconds)