Handbrake 1.8.2 preset. These settings are used by Netflix for Dexter series S01E01 and Dunkirk amongst others. Reduces file by size approx. 40% and maintains approx. 11.7 Mb/s bit rate.

Netflix H.264 v0.0.json

{
  "PresetList": [
    {
      "AlignAVStart": false,
      "AudioCopyMask": [
        "copy:aac"
      ],
      "AudioEncoderFallback": "av_aac",
      "AudioLanguageList": [],
      "AudioList": [
        {
          "AudioBitrate": 160,
          "AudioCompressionLevel": 0,
          "AudioEncoder": "av_aac",
          "AudioMixdown": "stereo",
          "AudioNormalizeMixLevel": false,
          "AudioSamplerate": "auto",
          "AudioTrackQualityEnable": false,
          "AudioTrackQuality": -1,
          "AudioTrackGainSlider": 0,
          "AudioTrackDRCSlider": 0
        }
      ],
      "AudioSecondaryEncoderMode": true,
      "AudioTrackSelectionBehavior": "first",
      "ChapterMarkers": true,
      "ChildrenArray": [],
      "Default": false,
      "FileFormat": "av_mkv",
      "Folder": false,
      "FolderOpen": false,
      "Optimize": false,
      "Mp4iPodCompatible": false,
      "PictureCropMode": 0,
      "PictureBottomCrop": 0,
      "PictureLeftCrop": 0,
      "PictureRightCrop": 0,
      "PictureTopCrop": 0,
      "PictureDARWidth": 0,
      "PictureDeblockPreset": "off",
      "PictureDeblockTune": "medium",
      "PictureDeblockCustom": "strength=strong:thresh=20:blocksize=8",
      "PictureDeinterlaceFilter": "decomb",
      "PictureCombDetectPreset": "fast",
      "PictureCombDetectCustom": "",
      "PictureDeinterlacePreset": "default",
      "PictureDenoiseCustom": "",
      "PictureDenoiseFilter": "off",
      "PictureSharpenCustom": "",
      "PictureSharpenFilter": "off",
      "PictureSharpenPreset": "medium",
      "PictureSharpenTune": "none",
      "PictureDetelecine": "off",
      "PictureDetelecineCustom": "",
      "PictureColorspacePreset": "off",
      "PictureColorspaceCustom": "",
      "PictureChromaSmoothPreset": "off",
      "PictureChromaSmoothTune": "none",
      "PictureChromaSmoothCustom": "",
      "PictureItuPAR": false,
      "PictureKeepRatio": true,
      "PicturePAR": "auto",
      "PicturePARWidth": 0,
      "PicturePARHeight": 0,
      "PictureWidth": 1920,
      "PictureHeight": 1080,
      "PictureUseMaximumSize": true,
      "PictureAllowUpscaling": false,
      "PictureForceHeight": 0,
      "PictureForceWidth": 0,
      "PicturePadMode": "none",
      "PicturePadTop": 0,
      "PicturePadBottom": 0,
      "PicturePadLeft": 0,
      "PicturePadRight": 0,
      "PresetDescription": "Used by Netflix for Dexter series S01E01 and Dunkirk. Reduces file by size approx. 40% and maintains approx. 11.7 Mb/s bit rate.",
      "PresetName": "Netflix H.264 v0.0",
      "Type": 1,
      "SubtitleAddCC": false,
      "SubtitleAddForeignAudioSearch": true,
      "SubtitleAddForeignAudioSubtitle": false,
      "SubtitleBurnBehavior": "foreign",
      "SubtitleBurnBDSub": false,
      "SubtitleBurnDVDSub": false,
      "SubtitleLanguageList": [],
      "SubtitleTrackSelectionBehavior": "none",
      "VideoAvgBitrate": 0,
      "VideoColorMatrixCode": 0,
      "VideoEncoder": "x264",
      "VideoFramerateMode": "vfr",
      "VideoGrayScale": false,
      "VideoScaler": "swscale",
      "VideoPreset": "veryslow",
      "VideoTune": "ssim",
      "VideoProfile": "high",
      "VideoLevel": "4.0",
      "VideoOptionExtra": "8x8dct=1:aq-mode=1:aq-strength=0.80:b-adapt=2:bframes=16:cabac=1:deblock=1,0:direct=auto:keyint=240:lookahead-threads=1:me=umh:merange=120:mixed-refs=1:psy=1:psy-rd=1.00,0.00:qcomp=0.50:ref=4:subme=10:trellis=2:vbv-bufsize=25000:vbv-maxrate=20000:weightb=1:weightp=2",
      "VideoQualityType": 2,
      "VideoQualitySlider": 16,
      "VideoMultiPass": true,
      "VideoTurboMultiPass": true,
      "x264UseAdvancedOptions": false,
      "PresetDisabled": false,
      "MetadataPassthrough": false
    }
  ],
  "VersionMajor": 56,
  "VersionMicro": 0,
  "VersionMinor": 0
}