A snippet to batch convert

batch-convert-h264-to-h265-HEVC.ps1

# Set the path to the folder containing the video files
$folderPath = "C:\Users\me\Downloads\Movies"
$cacheDir = "C:\Users\me\Downloads\Cache"
$minSize = 3GB # minimal size to trigger a x265 conversion

# Get a list of video files with "264" in the filename and .mkv or .mp4 extension, including subdirectories
$videoFiles = Get-ChildItem -Path $folderPath -Filter "*264*.m*" -Recurse | Where-Object { $_.Extension -eq '.mkv' -or $_.Extension -eq '.mp4' }

# Display the list of files, including their sizes
Write-Host "List of video files to be converted:"
foreach ($file in $videoFiles) {
    Write-Host "$($file.FullName) - Size: $($file.Length / 1GB) GB"
}

# Filter files based on size (exclude files below 5GB)
$videoFiles = $videoFiles | Where-Object { $_.Length -ge $minSize }

# Display the updated list of files after size filtering
Write-Host "`nList of video files to be converted (Files below $($minSize) excluded):"
foreach ($file in $videoFiles) {
    Write-Host "$($file.FullName) - Size: $($file.Length / 1GB) GB"
}

# Ask for confirmation to continue
$confirmation = Read-Host "Do you want to continue? (Y/N)"
if ($confirmation -ne 'Y') {
    Write-Host "Script aborted."
    exit
}
# Convert each file
foreach ($file in $videoFiles) {
    $outputFileName = $file.BaseName -replace "264", "265"  # Replace "264" with "265" in the filename
    $outputFilePath = Join-Path -Path $file.Directory.FullName -ChildPath "$outputFileName.mkv"
    $cacheFilePath = Join-Path -Path $cacheDir -ChildPath "$outputFileName.mkv"  # Output to cache directory initially

    # Check if the output file already exists
    if (Test-Path $outputFilePath) {
        Write-Host "Output file already exists. Skipping conversion for $($file.FullName)"
    }
    else {
        # Build the ffmpeg command
        $ffmpegCommand = "ffmpeg -i `"$($file.FullName)`" -c:v libx265 -crf 22 -preset fast -c:a copy -c:s copy -map 0 `"$cacheFilePath`""

        # Execute the ffmpeg command
        Invoke-Expression $ffmpegCommand
        Write-Host "File converted: $($file.FullName) => $($cacheFilePath)"
    }
}

Write-Host "Moving.."
foreach ($file in $videoFiles) {
	$outputFileName = $file.BaseName -replace "264", "265"  # Replace "264" with "265" in the filename
	$cacheFilePath = Join-Path -Path $cacheDir -ChildPath "$outputFileName.mkv"  # Output to cache directory initially
	Move-Item -Path $cacheFilePath -Destination $file.Directory.FullName -Force
	Write-Host "File moved to final output directory: $($cacheFilePath) => $($file.Directory.FullName)"
	
	# Rename .nl.srt file if it exists
	$srtFilePath = Join-Path -Path $file.Directory.FullName -ChildPath "$($file.BaseName).nl.srt"
	$newSrtFilePath = Join-Path -Path $file.Directory.FullName -ChildPath "$outputFileName.nl.srt"
	if (Test-Path $srtFilePath) {
		Copy-Item -Path $srtFilePath -Destination $newSrtFilePath
		Write-Host "Subtitle file copied: $($srtFilePath) => $($newSrtFilePath)"
	}
}

$removeOriginalFilesConfirmation = Read-Host "Do you want to REMOVE the original files? (Y/N)"
if ($removeOriginalFilesConfirmation -eq 'Y') {
    foreach ($file in $videoFiles) {
        Remove-Item -Path $file.FullName -Force
        Write-Host "Original file removed: $($file.FullName)"
        
        # Remove .nl.srt file if it exists
        $srtFilePath = Join-Path -Path $file.Directory.FullName -ChildPath "$($file.BaseName).nl.srt"
        if (Test-Path $srtFilePath) {
            Remove-Item -Path $srtFilePath -Force
            Write-Host "Original subtitle file removed: $($srtFilePath)"
        }
    }
}


Write-Host "Conversion completed."