Powershell script to batch-encode recursively, using a custom handbrake preset

handbrake.ps1

$filelist = Get-ChildItem "F:\path\to\vids\" -filter *.avi -recurse
 
$num = $filelist | measure
$filecount = $num.count
 
$i = 0;
ForEach ($file in $filelist)
{
    $i++;
    $oldfile = $file.DirectoryName + "\" + $file.BaseName + $file.Extension;
    $newfile = $file.DirectoryName + "\" + $file.BaseName + ".mp4";
      
    $progress = ($i / $filecount) * 100
    $progress = [Math]::Round($progress,2)
 
    Clear-Host
    Write-Host -------------------------------------------------------------------------------
    Write-Host Handbrake Batch Encoding
    Write-Host "Processing - $oldfile"
    Write-Host "File $i of $filecount - $progress%"
    Write-Host -------------------------------------------------------------------------------
     
    Start-Process "C:\Program Files\HandBrake\HandBrakeCLI.exe" -ArgumentList "--preset-import-file `"C:\Program Files\HandBrake\plex.json`" -Z `"Plex`" -i `"$oldfile`" -o `"$newfile`" --verbose=0" -Wait -NoNewWindow
}

plex.json

{
  "PresetList": [
    {
      "AudioCopyMask": [
        "copy:aac"
      ],
      "AudioEncoderFallback": "av_aac",
      "AudioLanguageList": [
        "eng",
        "fin",
        "und"
      ],
      "AudioList": [
        {
          "AudioBitrate": 160,
          "AudioCompressionLevel": 0.0,
          "AudioDitherMethod": null,
          "AudioEncoder": "av_aac",
          "AudioMixdown": "dpl2",
          "AudioNormalizeMixLevel": false,
          "AudioSamplerate": "auto",
          "AudioTrackQualityEnable": false,
          "AudioTrackQuality": -1.0,
          "AudioTrackGainSlider": 0.0,
          "AudioTrackDRCSlider": 1.0
        }
      ],
      "AudioSecondaryEncoderMode": true,
      "AudioTrackSelectionBehavior": "first",
      "ChapterMarkers": false,
      "ChildrenArray": [],
      "Default": true,
      "FileFormat": "av_mp4",
      "Folder": false,
      "FolderOpen": false,
      "Mp4HttpOptimize": false,
      "Mp4iPodCompatible": false,
      "PictureAutoCrop": true,
      "PictureBottomCrop": 0,
      "PictureLeftCrop": 0,
      "PictureRightCrop": 0,
      "PictureTopCrop": 0,
      "PictureDARWidth": 0,
      "PictureDeblock": 4,
      "PictureDeinterlaceFilter": "off",
      "PictureCombDetectPreset": "off",
      "PictureCombDetectCustom": null,
      "PictureDeinterlacePreset": "",
      "PictureDeinterlaceCustom": "",
      "PictureDenoiseCustom": "",
      "PictureDenoiseFilter": "off",
      "PictureDenoisePreset": "medium",
      "PictureDenoiseTune": "none",
      "PictureDetelecine": "off",
      "PictureDetelecineCustom": "",
      "PictureItuPAR": false,
      "PictureKeepRatio": true,
      "PictureLooseCrop": false,
      "PictureModulus": 2,
      "PicturePAR": "auto",
      "PicturePARWidth": 0,
      "PicturePARHeight": 0,
      "PictureRotate": "0:0",
      "PictureWidth": null,
      "PictureHeight": null,
      "PictureForceHeight": 0,
      "PictureForceWidth": 0,
      "PresetDescription": null,
      "PresetName": "Plex",
      "Type": 1,
      "UsesPictureFilters": false,
      "UsesPictureSettings": 2,
      "SubtitleAddCC": false,
      "SubtitleAddForeignAudioSearch": false,
      "SubtitleAddForeignAudioSubtitle": false,
      "SubtitleBurnBehavior": "none",
      "SubtitleBurnBDSub": false,
      "SubtitleBurnDVDSub": false,
      "SubtitleLanguageList": [
        "eng",
        "fin",
        "und"
      ],
      "SubtitleTrackSelectionBehavior": "first",
      "VideoAvgBitrate": 0,
      "VideoColorMatrixCode": 0,
      "VideoEncoder": "x264",
      "VideoFramerate": "",
      "VideoFramerateMode": "vfr",
      "VideoGrayScale": false,
      "VideoHWDecode": false,
      "VideoScaler": "swscale",
      "VideoPreset": "fast",
      "VideoTune": "",
      "VideoProfile": "baseline",
      "VideoLevel": "4.1",
      "VideoOptionExtra": "",
      "VideoQualityType": 2,
      "VideoQualitySlider": 18.0,
      "VideoQSVDecode": true,
      "VideoQSVAsyncDepth": 4,
      "VideoTwoPass": false,
      "VideoTurboTwoPass": false,
      "x264Option": "",
      "x264UseAdvancedOptions": false
    }
  ],
  "VersionMajor": "11",
  "VersionMicro": "0",
  "VersionMinor": "0"
}