staxrip/Source/Encoding/x264Enc.vb

Imports System.Text

Imports StaxRip.VideoEncoderCommandLine
Imports StaxRip.UI
Imports System.Text.RegularExpressions

<Serializable()>
Public Class x264Enc
    Inherits BasicVideoEncoder

    Property ParamsStore As New PrimitiveStore

    Sub New()
        Name = "x264"
        Params.ApplyValues(True)
        Params.ApplyValues(False)
    End Sub

    Overloads Shared ReadOnly Property Package As Package
        Get
            Return Package.x264
        End Get
    End Property

    <NonSerialized>
    Private ParamsValue As x264Params

    Property Params As x264Params
        Get
            If ParamsValue Is Nothing Then
                ParamsValue = New x264Params
                ParamsValue.Init(ParamsStore)
            End If

            Return ParamsValue
        End Get
        Set(value As x264Params)
            ParamsValue = value
        End Set
    End Property

    Overrides ReadOnly Property Codec As String
        Get
            Return "h264"
        End Get
    End Property

    Overrides ReadOnly Property OutputExt As String
        Get
            If Params.Muxer.Value = 0 OrElse Params.Muxer.Value = 1 Then
                Return "h264"
            Else
                Return Params.Muxer.ValueText.ToLowerInvariant
            End If
        End Get
    End Property

    Overrides Property Bitrate As Integer
        Get
            Return CInt(Params.Bitrate.Value)
        End Get
        Set(value As Integer)
            Params.Bitrate.Value = value
        End Set
    End Property

    Public Overrides Property OverridesTargetFileName As Boolean
        Get
            Return Params.OverrideTargetFileName.Value
        End Get
        Set(value As Boolean)
            If Params.OverrideTargetFileName.Value <> value Then
                Params.OverrideTargetFileName.Value = value
                Params.RaiseValueChanged(Params.OverrideTargetFileName)
            End If
        End Set
    End Property

    Public Overrides ReadOnly Property OverridingTargetFileName As String
        Get
            Dim value = Macro.ExpandParamValues(Params.TargetFileName.Value, Params.Items)
            value = value.Replace(Environment.NewLine, "")
            Return value
        End Get
    End Property

    Overrides Sub Encode()
        Encode("Video encoding", GetArgs(1, 0, 0, Nothing, p.Script), s.EncoderProcessPriority)

        If Params.Mode.Value = x264RateMode.TwoPass Then
            Encode("Video encoding second pass", GetArgs(2, 0, 0, Nothing, p.Script), s.EncoderProcessPriority)
        ElseIf Params.Mode.Value = x264RateMode.ThreePass Then
            'Specific order 1 > 3 > 2 is correct!
            Encode("Video encoding Nth pass", GetArgs(3, 0, 0, Nothing, p.Script), s.EncoderProcessPriority)
            Encode("Video encoding last pass", GetArgs(2, 0, 0, Nothing, p.Script), s.EncoderProcessPriority)
        End If
    End Sub

    Overloads Sub Encode(passName As String, commandLine As String, priority As ProcessPriorityClass)
        p.Script.Synchronize()

        Using proc As New Proc
            proc.Package = Package.x264
            proc.Header = passName
            proc.Priority = priority
            proc.FrameCount = p.Script.GetFrameCount
            proc.SkipStrings = {"kb/s, eta", "est.size", "%]"}

            If commandLine.Contains("|") Then
                proc.File = "cmd.exe"
                proc.Arguments = "/S /C """ + commandLine + """"
            Else
                proc.CommandLine = commandLine
            End If

            proc.Start()
        End Using
    End Sub

    Overrides Sub SetMetaData(sourceFile As String)
        If Not p.ImportVUIMetadata Then Exit Sub

        Dim cl = ""
        Dim colour_primaries = MediaInfo.GetVideo(sourceFile, "colour_primaries")

        Select Case colour_primaries
            Case "BT.2020"
                If colour_primaries.Contains("BT.2020") Then
                    cl += " --colorprim bt2020"
                End If
            Case "BT.709"
                If colour_primaries.Contains("BT.709") Then
                    cl += " --colorprim bt709"
                End If
        End Select

        Dim transfer_characteristics = MediaInfo.GetVideo(sourceFile, "transfer_characteristics")

        Select Case transfer_characteristics
            Case "PQ", "SMPTE ST 2084"
                If transfer_characteristics.Contains("SMPTE ST 2084") Or transfer_characteristics.Contains("PQ") Then
                    cl += " --transfer smpte2084"
                End If
            Case "BT.709"
                If transfer_characteristics.Contains("BT.709") Then
                    cl += " --transfer bt709"
                End If
            Case "HLG"
                cl += " --transfer arib-std-b67"
        End Select

        Dim matrix_coefficients = MediaInfo.GetVideo(sourceFile, "matrix_coefficients")

        Select Case matrix_coefficients
            Case "BT.2020 non-constant"
                If matrix_coefficients.Contains("BT.2020 non-constant") Then
                    cl += " --colormatrix bt2020nc"
                End If
            Case "BT.709"
                cl += " --colormatrix bt709"
        End Select

        Dim color_range = MediaInfo.GetVideo(sourceFile, "colour_range")

        Select Case color_range
            Case "Limited"
                cl += " --range limited"
            Case "Full"
                cl += " --range full"
        End Select

        Dim ChromaSubsampling_Position = MediaInfo.GetVideo(sourceFile, "ChromaSubsampling_Position")
        Dim chromaloc = New String(ChromaSubsampling_Position.Where(Function(c) c.IsDigit()).ToArray())

        If Not String.IsNullOrEmpty(chromaloc) AndAlso chromaloc <> "0" Then
            cl += $" --chromaloc {chromaloc}"
        End If

        Dim MasteringDisplay_ColorPrimaries = MediaInfo.GetVideo(sourceFile, "MasteringDisplay_ColorPrimaries")
        Dim MasteringDisplay_Luminance = MediaInfo.GetVideo(sourceFile, "MasteringDisplay_Luminance")

        If MasteringDisplay_ColorPrimaries <> "" AndAlso MasteringDisplay_Luminance <> "" Then
            Dim luminanceMatch = Regex.Match(MasteringDisplay_Luminance, "min: ([\d\.]+) cd/m2, max: ([\d\.]+) cd/m2")

            If luminanceMatch.Success Then
                Dim luminanceMin = luminanceMatch.Groups(1).Value.ToDouble * 10000
                Dim luminanceMax = luminanceMatch.Groups(2).Value.ToDouble * 10000

                If MasteringDisplay_ColorPrimaries.Contains("Display P3") Then
                    cl += " --output-depth 10"
                    cl += $" --master-display ""G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L({luminanceMax},{luminanceMin})"""
                    cl += " --hdr10"
                    cl += " --repeat-headers"
                    cl += " --range limited"
                    cl += " --hrd"
                    cl += " --aud"
                End If

                If MasteringDisplay_ColorPrimaries.Contains("DCI P3") Then
                    cl += " --output-depth 10"
                    cl += $" --master-display ""G(13250,34500)B(7500,3000)R(34000,16000)WP(15700,17550)L({luminanceMax},{luminanceMin})"""
                    cl += " --hdr10"
                    cl += " --repeat-headers"
                    cl += " --range limited"
                    cl += " --hrd"
                    cl += " --aud"
                End If

                If MasteringDisplay_ColorPrimaries.Contains("BT.2020") Then
                    cl += " --output-depth 10"
                    cl += $" --master-display ""G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L({luminanceMax},{luminanceMin})"""
                    cl += " --hdr10"
                    cl += " --repeat-headers"
                    cl += " --range limited"
                    cl += " --hrd"
                    cl += " --aud"
                End If
            End If
        End If

        Dim MaxCLL = MediaInfo.GetVideo(sourceFile, "MaxCLL").ToInt()
        Dim MaxFALL = MediaInfo.GetVideo(sourceFile, "MaxFALL").ToInt()

        If MaxCLL <> 0 OrElse MaxFALL <> 0 Then
            cl += $" --max-cll ""{MaxCLL},{MaxFALL}"""
        End If

        ImportCommandLine(cl)
    End Sub

    Overrides Function CanChunkEncode() As Boolean
        Return CInt(Params.Chunks.Value) > 1
    End Function

    Overrides Function GetChunks() As Integer
        Return CInt(Params.Chunks.Value)
    End Function

    Overrides Function GetChunkEncodeActions() As List(Of Action)
        Dim maxFrame = p.Script.GetFrameCount()
        Dim chunkCount = CInt(Params.Chunks.Value)
        Dim startFrame = CInt(Params.Seek.Value)
        Dim length = If(CInt(Params.Frames.Value) > 0, CInt(Params.Frames.Value), maxFrame - startFrame)
        Dim endFrame = Math.Min(startFrame + length - 1, maxFrame)
        Dim chunkLength = length \ chunkCount
        Dim ret As New List(Of Action)

        For chunk = 0 To chunkCount - 1
            Dim chunkStart = startFrame + (chunk * chunkLength)
            Dim chunkEnd = If(chunk <> chunkCount - 1, chunkStart + (chunkLength - 1), endFrame)
            Dim chunkName = ""
            Dim passName = ""

            If chunkCount > 1 Then
                chunkName = "_chunk" & (chunk + 1)
                passName = " chunk " & (chunk + 1)
            End If

            If Params.Mode.Value = x264RateMode.TwoPass Then
                ret.Add(Sub()
                            Encode("Video encoding pass 1" + passName, GetArgs(1, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority)
                            Encode("Video encoding pass 2" + passName, GetArgs(2, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority)
                        End Sub)
            ElseIf Params.Mode.Value = x264RateMode.ThreePass Then
                ret.Add(Sub()
                            'Specific order 1 > 3 > 2 is correct!
                            Encode("Video encoding first pass" + passName, GetArgs(1, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority)
                            Encode("Video encoding Nth pass" + passName, GetArgs(3, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority)
                            Encode("Video encoding last pass" + passName, GetArgs(2, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority)
                        End Sub)
            Else
                ret.Add(Sub() Encode("Video encoding" + passName, GetArgs(1, chunkStart, chunkEnd, chunkName, p.Script), s.EncoderProcessPriority))
            End If
        Next

        Return ret
    End Function

    Overrides Sub RunCompCheck()
        If Not g.VerifyRequirements OrElse Not g.IsValidSource Then
            Exit Sub
        End If

        Dim newParams As New x264Params
        Dim newStore = ObjectHelp.GetCopy(ParamsStore)
        newParams.Init(newStore)

        Dim enc As New x264Enc
        enc.Params = newParams
        enc.Params.Mode.Value = x264RateMode.Quality
        enc.Params.Quant.Value = enc.Params.CompCheck.Value

        Dim script As New VideoScript
        script.Engine = p.Script.Engine
        script.Filters = p.Script.GetFiltersCopy
        Dim code As String
        Dim framerate = p.Script.GetFramerate()
        Dim totalFrames = p.Script.GetFrameCount()
        Dim range = framerate * p.CompCheckTestblockSeconds
        Dim every = (100 / p.CompCheckPercentage) * range

        If script.Engine = ScriptEngine.AviSynth Then
            code = $"SelectRangeEvery({CInt(every)},{CInt(range)})"
        Else
            code = "fpsnum = clip.fps_num" + BR
            code += "fpsden = clip.fps_den" + BR
            code += $"clip = core.std.SelectEvery(clip = clip, cycle = {CInt(every)}, offsets = range({CInt(range)}))" + BR
            code += "clip = core.std.AssumeFPS(clip = clip, fpsnum = fpsnum, fpsden = fpsden)"
        End If

        script.Filters.Add(New VideoFilter("aaa", "aaa", code))
        script.Path = Path.Combine(p.TempDir, p.TargetFile.Base + "_CompCheck." + script.FileType)
        script.Synchronize()

        Log.WriteLine(BR + script.GetFullScript + BR)

        Dim commandLine = enc.Params.GetArgs(0, 0, 0, Nothing, script, Path.Combine(p.TempDir, p.TargetFile.Base + "_CompCheck." + OutputExt), True, True)

        Try
            Encode("Compressibility Check", commandLine, s.EncoderProcessPriority)
        Catch ex As AbortException
            Exit Sub
        Catch ex As Exception
            g.ShowException(ex)
            Exit Sub
        End Try

        Dim bits = (New FileInfo(Path.Combine(p.TempDir, p.TargetFile.Base + "_CompCheck." + OutputExt)).Length) * 8
        p.Compressibility = (bits / script.GetFrameCount) / (p.TargetWidth * p.TargetHeight)

        OnAfterCompCheck()
        g.MainForm.Assistant()

        Log.WriteLine("Quality: " & CInt(Calc.GetPercent).ToString() + " %")
        Log.WriteLine("Compressibility: " + p.Compressibility.ToString("f3"))
        Log.Save()
    End Sub

    Overloads Function GetArgs(pass As Integer, startFrame As Integer, endFrame As Integer, chunkName As String, script As VideoScript, Optional includePaths As Boolean = True) As String
        Return Params.GetArgs(pass, startFrame, endFrame, chunkName, script, OutputPath.DirAndBase + OutputExtFull, includePaths, True)
    End Function

    Overrides Sub ShowConfigDialog(Optional param As CommandLineParam = Nothing)
        Dim newParams As New x264Params
        Dim store = ObjectHelp.GetCopy(ParamsStore)
        newParams.Init(store)
        newParams.ApplyValues(True)

        Using form As New CommandLineForm(newParams)
            form.HTMLHelpFunc = Function() $"<p><a href=""{Package.x264.HelpURL}"">x264 Online Help</a></p>" +
               $"<h2>x264 Console Help</h2><pre>{HelpDocument.ConvertChars(Package.x264.CreateHelpfile())}</pre>"

            Dim a = Sub()
                        Dim enc = ObjectHelp.GetCopy(Me)
                        Dim params2 As New x264Params
                        Dim store2 = ObjectHelp.GetCopy(store)
                        params2.Init(store2)
                        enc.Params = params2
                        enc.ParamsStore = store2
                        SaveProfile(enc)
                    End Sub

            form.cms.Add("Save Profile...", a, Keys.Control Or Keys.S, Symbol.Save)

            If Not String.IsNullOrWhiteSpace(param?.Path) Then
                form.SimpleUI.ShowPage(param?.Path)
                form.cbGoTo.Text = param.GetSwitches().FirstOrDefault()
            End If

            If form.ShowDialog() = DialogResult.OK Then
                AutoCompCheckValue = CInt(newParams.CompCheckAimedQuality.Value)
                Params = newParams
                ParamsStore = store
                OnStateChange()
                UpdateTargetFile()
            End If
        End Using
    End Sub

    Overrides Property QualityMode() As Boolean
        Get
            Return Params.Mode.Value = x264RateMode.Quantizer OrElse Params.Mode.Value = x264RateMode.Quality
        End Get
        Set(Value As Boolean)
        End Set
    End Property

    Public Overrides ReadOnly Property CommandLineParams As CommandLineParams
        Get
            Return Params
        End Get
    End Property

    Sub SetMuxer()
        Muxer = New MkvMuxer()
    End Sub

    Overrides Function CreateEditControl() As Control
        Return New x264Control(Me) With {.Dock = DockStyle.Fill}
    End Function

    Shared Function Test() As String
        Dim tester As New ConsolAppTester

        tester.IgnoredSwitches = "help longhelp fullhelp progress"
        tester.UndocumentedSwitches = "y4m fade-compensate log-file log-file-level progress-header"
        tester.Package = Package.x264
        tester.CodeFile = Path.Combine(Folder.Startup.Parent, "Encoding", "x264Enc.vb")

        Return tester.Test
    End Function
End Class

Public Class x264Params
    Inherits CommandLineParams

    Sub New()
        Title = "x264 Options"
    End Sub

    Public Overrides ReadOnly Property Package As Package
        Get
            Return x264Enc.Package
        End Get
    End Property


    Property OverrideTargetFileName As New BoolParam() With {
        .Text = "Override Target File Name",
        .Init = False}

    Property TargetFileName As New StringParam With {
        .Text = "Target File Name",
        .Quotes = QuotesMode.Never,
        .TextChangedAction = Sub(text) TargetFileNamePreview.Value = Macro.ExpandParamValues(text, Items),
        .Init = "%source_name%_new",
        .InitAction = Sub(tb)
                          tb.Edit.MultilineHeightFactor = 6
                          tb.Edit.TextBox.Font = FontManager.GetCodeFont()
                      End Sub}

    Property TargetFileNamePreview As New StringParam With {
        .Text = "Preview",
        .Quotes = QuotesMode.Never,
        .InitAction = Sub(tb)
                          tb.Edit.MultilineHeightFactor = 3
                          tb.Edit.TextBox.Font = FontManager.GetCodeFont()
                          tb.Edit.TextBox.ReadOnly = True
                          BlockValueChanged = True
                          .Value = Macro.ExpandParamValues(TargetFileName.Value, Items)
                          BlockValueChanged = False
                      End Sub}

    Property Mode As New OptionParam With {
        .Name = "Mode",
        .Text = "Mode",
        .Switches = {"--bitrate", "--qp", "--crf", "--pass", "--stats", "-q", "-B", "-p"},
        .Options = {"Bitrate", "Quantizer", "Quality", "Two Pass", "Three Pass"},
        .Value = 2}

    Property Quant As New NumParam With {
        .Switches = {"--crf", "--qp"},
        .Name = "Quant",
        .Text = "Quality",
        .DefaultValue = 23,
        .Value = 20,
        .VisibleFunc = Function() Mode.Value = 1 OrElse Mode.Value = 2,
        .Config = {0, 69, 0.5, 1}}

    Property Bitrate As New NumParam With {
        .HelpSwitch = "--bitrate",
        .Text = "Bitrate",
        .Init = 5000,
        .VisibleFunc = Function() Mode.Value <> 1 AndAlso Mode.Value <> 2,
        .Config = {0, 1000000, 100}}

    Property Preset As New OptionParam With {
        .Switch = "--preset",
        .Text = "Preset",
        .Options = {"Ultra Fast", "Super Fast", "Very Fast", "Faster", "Fast", "Medium", "Slow", "Slower", "Very Slow", "Placebo"},
        .Init = 5}

    Property Tune As New OptionParam With {
        .Switch = "--tune",
        .Text = "Tune",
        .Options = {"None", "Film", "Animation", "Grain", "Still Image", "PSNR", "SSIM", "Fast Decode", "Zero Latency", "TouHou"}}

    Property CompCheck As New NumParam With {
        .Name = "CompCheckQuant",
        .Text = "Comp. Check",
        .Help = "CRF value used as 100%",
        .Value = 18,
        .Config = {1, 50}}

    Property CompCheckAimedQuality As New NumParam With {
        .Name = "CompCheckAimedQuality",
        .Text = "Aimed Quality",
        .Value = 50,
        .Help = "Percent value to adjusts the target file size or image size after the compressibility check accordingly.",
        .Config = {1, 100}}

    Property Chunks As New NumParam With {
        .Text = "Chunks",
        .Init = 1,
        .Config = {1, 128}}

    Property Seek As New NumParam With {
        .HelpSwitch = "--seek",
        .Text = "Seek"}

    Property Frames As New NumParam With {
        .HelpSwitch = "--frames",
        .Switches = {"-f"},
        .Text = "Frames"}

    Property Custom As New StringParam With {
        .Text = "Custom",
        .Quotes = QuotesMode.Never,
        .AlwaysOn = True,
        .InitAction = Sub(tb)
                          tb.Edit.MultilineHeightFactor = 6
                          tb.Edit.TextBox.Font = FontManager.GetCodeFont()
                      End Sub}

    Property CustomFirstPass As New StringParam With {
        .Text = "Custom" + BR + "First Pass",
        .Quotes = QuotesMode.Never,
        .InitAction = Sub(tb)
                          tb.Edit.MultilineHeightFactor = 6
                          tb.Edit.TextBox.Font = FontManager.GetCodeFont()
                      End Sub}

    Property CustomSecondPass As New StringParam With {
        .Text = "Custom" + BR + "Second Pass",
        .Quotes = QuotesMode.Never,
        .InitAction = Sub(tb)
                          tb.Edit.MultilineHeightFactor = 6
                          tb.Edit.TextBox.Font = FontManager.GetCodeFont()
                      End Sub}

    Property Deblock As New BoolParam With {
        .Switch = "--deblock",
        .NoSwitch = "--no-deblock",
        .Switches = {"-f"},
        .Text = "Deblocking",
        .ImportAction = Sub(param, arg)
                            Dim a = arg.Split(":"c)
                            DeblockA.Value = a(0).ToInt
                            DeblockB.Value = a(1).ToInt
                        End Sub,
        .ArgsFunc = Function() As String
                        If Deblock.Value Then
                            If DeblockA.Value = DeblockA.DefaultValue AndAlso
                                DeblockB.Value = DeblockB.DefaultValue AndAlso
                                Deblock.DefaultValue Then

                                Return Nothing
                            Else
                                Return "--deblock " & DeblockA.Value & ":" & DeblockB.Value
                            End If
                        ElseIf Deblock.DefaultValue Then
                            Return "--no-deblock"
                        End If
                        Return ""
                    End Function}

    Property DeblockA As New NumParam With {
        .Text = "      Strength",
        .Config = {-6, 6}}

    Property DeblockB As New NumParam With {
        .Text = "      Threshold",
        .Config = {-6, 6}}

    Property BFrames As New NumParam With {
        .Switch = "--bframes",
        .Switches = {"-b"},
        .Text = "B-Frames",
        .Config = {0, 16}}

    Property AqMode As New OptionParam With {
        .Switch = "--aq-mode",
        .Text = "AQ Mode",
        .IntegerValue = True,
        .Options = {"Disabled", "Variance AQ", "Auto-variance AQ", "Auto-variance AQ with bias to dark scenes"}}

    Property AqStrength As New NumParam With {
        .Switch = "--aq-strength",
        .Text = "AQ Strength",
        .Config = {0, 0, 0.1, 1}}

    Property AqBiasStrength As New NumParam With {
        .Switch = "--aq-bias-strength",
        .Text = "AQ Bias Strength",
        .Init = 1,
        .Config = {0, 3, 0.05, 2},
        .VisibleFunc = Function() AqMode.Value = 3}

    Property BAdapt As New OptionParam With {
        .Switch = "--b-adapt",
        .Text = "B-Adapt",
        .IntegerValue = True,
        .Options = {"Disabled", "Fast", "Optimal"}}

    Property Cabac As New BoolParam With {
        .NoSwitch = "--no-cabac",
        .Text = "Cabac"}

    Property Weightp As New OptionParam With {
        .Switch = "--weightp",
        .Text = "Weight P Prediction",
        .Options = {"Disabled", "Weighted refs", "Weighted refs + Duplicates"},
        .IntegerValue = True}

    Property Profile As New OptionParam With {
        .Switch = "--profile",
        .Text = "Profile",
        .Options = {"Automatic", "Baseline", "Main", "High", "High 10", "High 422", "High 444"}}

    Property CQM As New OptionParam With {
        .Switch = "--cqm",
        .Options = {"Flat", "JVT"},
        .Text = "Quant Matrice Preset"}

    Property Mbtree As New BoolParam With {
        .NoSwitch = "--no-mbtree",
        .Text = "MB Tree"}

    Property I4x4 As New BoolParam With {
        .Switches = {"--partitions", "-A"},
        .Label = "Partitions",
        .ArgsFunc = AddressOf GetPartitionsArg,
        .LeftMargin = g.MainForm.FontHeight * 1.5,
        .Text = "i4x4"}

    Property P4x4 As New BoolParam With {
        .Switches = {"--partitions", "-A"},
        .LeftMargin = g.MainForm.FontHeight * 1.5,
        .Text = "p4x4"}

    Property B8x8 As New BoolParam With {
        .Switches = {"--partitions", "-A"},
        .LeftMargin = g.MainForm.FontHeight * 1.5,
        .Text = "b8x8"}

    Property I8x8 As New BoolParam With {
        .Switches = {"--partitions", "-A"},
        .LeftMargin = g.MainForm.FontHeight * 1.5,
        .Text = "i8x8"}

    Property P8x8 As New BoolParam With {
        .Switches = {"--partitions", "-A"},
        .LeftMargin = g.MainForm.FontHeight * 1.5,
        .Text = "p8x8"}

    Property _8x8dct As New BoolParam With {
        .Switch = "--8x8dct",
        .NoSwitch = "--no-8x8dct",
        .Text = "8x8dct",
        .LeftMargin = g.MainForm.FontHeight * 1.5}

    Property RcLookahead As New NumParam With {
        .Switch = "--rc-lookahead",
        .Text = "Lookahead"}

    Property Ref As New NumParam With {
        .Switch = "--ref",
        .Switches = {"-r"},
        .Text = "Ref Frames"}

    Property Scenecut As New NumParam With {
        .Switch = "--scenecut",
        .Text = "Scenecut"}

    Property Subme As New OptionParam With {
        .Switch = "--subme",
        .Switches = {"-m"},
        .Text = "Subpel Refinement",
        .IntegerValue = True,
        .Options = {"0: Fullpel only (not recommended)", "1: SAD mode decision, one qpel iteration", "2: SATD mode decision", "3: Progressively more qpel", "4: Progressively more qpel", "5: Progressively more qpel", "6: RD mode decision for I/P-frames", "7: RD mode decision for all frames", "8: RD refinement for I/P-frames", "9: RD refinement for all frames", "10: QP-RD - requires trellis=2, aq-mode>0", "11: Full RD disable all early terminations"}}

    Property Me_ As New OptionParam With {
        .Switch = "--me",
        .Text = "Motion Search Method",
        .Values = {"dia", "hex", "umh", "esa", "tesa"},
        .Options = {"Diamond Search, Radius 1 (fast)", "Hexagonal Search, Radius 2", "Uneven Multi-Hexagon Search", "Exhaustive Search", "Hadamard Exhaustive Search (slow)"}}

    Property Weightb As New BoolParam With {
        .NoSwitch = "--no-weightb",
        .Text = "Weighted prediction for B-frames"}

    Property Trellis As New OptionParam With {
        .Switch = "--trellis",
        .Switches = {"-t"},
        .Text = "Trellis",
        .IntegerValue = True,
        .Options = {"Disabled", "Enabled only on the final encode of a MB", "Enabled on all mode decisions"}}

    Property Direct As New OptionParam With {
        .Switch = "--direct",
        .Text = "Direct MV Prediction",
        .Options = {"None", "Spatial", "Temporal", "Auto"}}

    Property Merange As New NumParam With {
        .Switch = "--merange",
        .Text = "ME Range"}

    Property Fastpskip As New BoolParam With {
        .NoSwitch = "--no-fast-pskip",
        .Text = "Fast Pskip"}

    Property Psy As New BoolParam With {
        .Switch = "--psy-rd",
        .NoSwitch = "--no-psy",
        .Text = "Psy RD",
        .ArgsFunc = Function() As String
                        If Psy.Value Then
                            If PsyRD.Value <> PsyRD.DefaultValue OrElse
                                PsyTrellis.Value <> PsyTrellis.DefaultValue OrElse
                                Not Psy.DefaultValue Then

                                Return "--psy-rd " & PsyRD.Value.ToInvariantString & ":" & PsyTrellis.Value.ToInvariantString
                            End If
                        Else
                            If Psy.DefaultValue Then
                                Return "--no-psy"
                            End If
                        End If
                        Return ""
                    End Function}

    Property PsyRD As New NumParam With {
        .Config = {0, 0, 0.05, 2},
        .Text = "     RD"}

    Property PsyTrellis As New NumParam With {
        .Config = {0, 0, 0.05, 2},
        .Text = "     Trellis"}

    Property DctDecimate As New BoolParam With {
        .NoSwitch = "--no-dct-decimate",
        .Text = "DCT Decimate"}

    Property DeadzoneInter As New NumParam With {
        .Switch = "--deadzone-inter",
        .Text = "Deadzone Inter",
        .Config = {0, 32}}

    Property DeadzoneIntra As New NumParam With {
        .Switch = "--deadzone-intra",
        .Text = "Deadzone Intra",
        .Config = {0, 32}}

    Property MixedRefs As New BoolParam With {
        .NoSwitch = "--no-mixed-refs",
        .Text = "Mixed References"}

    Property ForceCFR As New BoolParam With {
        .Switch = "--force-cfr",
        .Text = "Force constant framerate timestamp generation"}

    Property Ipratio As New NumParam With {
        .Switch = "--ipratio",
        .Text = "IP Ratio",
        .Config = {0, 0, 0.1, 1}}

    Property Pbratio As New NumParam With {
        .Switch = "--pbratio",
        .Text = "PB Ratio",
        .Config = {0, 0, 0.1, 1}}

    Property Qcomp As New NumParam With {
        .Text = "QComp",
        .Switch = "--qcomp",
        .Config = {0, 0, 0.1, 1}}

    Property Muxer As New OptionParam With {
        .Switch = "--muxer",
        .Text = "Output Format",
        .Options = {"Automatic", "RAW", "MKV", "FLV", "MP4"}}

    Property Demuxer As New OptionParam With {
        .HelpSwitch = "--demuxer",
        .Text = "Demuxer",
        .Options = {"Automatic", "RAW", "Y4M", "AVS", "LAVF", "FFMS"}}

    Property SlowFirstpass As New BoolParam With {
        .Switch = "--slow-firstpass",
        .Text = "Slow Firstpass"}

    Property PipingToolAVS As New OptionParam With {
        .Text = "Pipe",
        .Name = "PipingToolAVS",
        .VisibleFunc = Function() p.Script.Engine = ScriptEngine.AviSynth,
        .Options = {"Automatic", "None", "avs2pipemod y4m", "avs2pipemod raw", "ffmpeg y4m", "ffmpeg raw"}}

    Property PipingToolVS As New OptionParam With {
        .Text = "Pipe",
        .Name = "PipingToolVS",
        .VisibleFunc = Function() p.Script.Engine = ScriptEngine.VapourSynth,
        .Options = {"Automatic", "vspipe y4m", "vspipe raw", "ffmpeg y4m", "ffmpeg raw"}}

    Sub ApplyValues(isDefault As Boolean)
        Dim setVal = Sub(param As CommandLineParam, value As Object)
                         If TypeOf param Is BoolParam Then
                             If isDefault Then
                                 DirectCast(param, BoolParam).DefaultValue = CBool(value)
                             Else
                                 DirectCast(param, BoolParam).Value = CBool(value)
                             End If
                         ElseIf TypeOf param Is NumParam Then
                             If isDefault Then
                                 DirectCast(param, NumParam).DefaultValue = CDbl(value)
                             Else
                                 DirectCast(param, NumParam).Value = CDbl(value)
                             End If
                         ElseIf TypeOf param Is OptionParam Then
                             If isDefault Then
                                 DirectCast(param, OptionParam).DefaultValue = CInt(value)
                             Else
                                 DirectCast(param, OptionParam).Value = CInt(value)
                             End If
                         End If
                     End Sub

        setVal(Deblock, True)
        setVal(DeblockA, 0)
        setVal(DeblockB, 0)
        setVal(BFrames, 3)
        setVal(AqMode, 1)
        setVal(BAdapt, 1)
        setVal(Cabac, True)
        setVal(Weightp, 2)
        setVal(Mbtree, True)
        setVal(Me_, 1)
        setVal(MixedRefs, True)
        setVal(I4x4, True)
        setVal(P4x4, False)
        setVal(B8x8, True)
        setVal(I8x8, True)
        setVal(P8x8, True)
        setVal(_8x8dct, True)
        setVal(RcLookahead, 40)
        setVal(Ref, 3)
        setVal(Scenecut, 40)
        setVal(Subme, 7)
        setVal(Trellis, 1)
        setVal(Weightb, True)
        setVal(Direct, 1)
        setVal(Merange, 16)
        setVal(Fastpskip, True)
        setVal(Psy, True)
        setVal(PsyRD, 1)
        setVal(PsyTrellis, 0)
        setVal(AqStrength, 1)
        setVal(AqBiasStrength, 1)
        setVal(DctDecimate, True)
        setVal(DeadzoneInter, 21)
        setVal(DeadzoneIntra, 11)
        setVal(Ipratio, 1.4)
        setVal(Pbratio, 1.3)
        setVal(Qcomp, 0.6)
        setVal(ForceCFR, False)
        setVal(SlowFirstpass, False)

        Select Case Preset.Value
            Case 0 'ultrafast
                setVal(I4x4, False)
                setVal(P4x4, False)
                setVal(B8x8, False)
                setVal(I8x8, False)
                setVal(P8x8, False)
                setVal(Deblock, False)
                setVal(_8x8dct, False)
                setVal(BFrames, 0)
                setVal(AqMode, 0)
                setVal(BAdapt, 0)
                setVal(Cabac, False)
                setVal(Weightp, 0)
                setVal(Mbtree, False)
                setVal(Me_, 0)
                setVal(MixedRefs, False)
                setVal(RcLookahead, 0)
                setVal(Ref, 1)
                setVal(Scenecut, 0)
                setVal(Subme, 0)
                setVal(Trellis, 0)
                setVal(Weightb, False)
            Case 1 'superfast
                setVal(P4x4, False)
                setVal(B8x8, False)
                setVal(P8x8, False)
                setVal(Weightp, 1)
                setVal(Mbtree, False)
                setVal(Me_, 0)
                setVal(MixedRefs, False)
                setVal(RcLookahead, 0)
                setVal(Ref, 1)
                setVal(Subme, 1)
                setVal(Trellis, 0)
            Case 2 'veryfast
                setVal(Weightp, 1)
                setVal(MixedRefs, False)
                setVal(RcLookahead, 10)
                setVal(Ref, 1)
                setVal(Subme, 2)
                setVal(Trellis, 0)
            Case 3 'faster
                setVal(Weightp, 1)
                setVal(MixedRefs, False)
                setVal(RcLookahead, 20)
                setVal(Ref, 2)
                setVal(Subme, 4)
            Case 4 'fast
                setVal(Weightp, 1)
                setVal(RcLookahead, 30)
                setVal(Ref, 2)
                setVal(Subme, 6)
            Case 5 'medium
            Case 6 'slow
                setVal(RcLookahead, 50)
                setVal(Ref, 5)
                setVal(Subme, 8)
                setVal(Trellis, 2)
                setVal(Direct, 3)
            Case 7 'slower
                setVal(BAdapt, 2)
                setVal(Me_, 2)
                setVal(RcLookahead, 60)
                setVal(Ref, 8)
                setVal(Subme, 9)
                setVal(Trellis, 2)
                setVal(Direct, 3)
            Case 8 'veryslow
                setVal(BFrames, 8)
                setVal(BAdapt, 2)
                setVal(Me_, 2)
                setVal(RcLookahead, 60)
                setVal(RcLookahead, 60)
                setVal(Ref, 16)
                setVal(Subme, 10)
                setVal(Trellis, 2)
                setVal(Direct, 3)
                setVal(Merange, 24)
            Case 9 'placebo
                setVal(BFrames, 16)
                setVal(BAdapt, 2)
                setVal(Me_, 4)
                setVal(RcLookahead, 60)
                setVal(Ref, 16)
                setVal(Subme, 11)
                setVal(Trellis, 2)
                setVal(Direct, 3)
                setVal(Merange, 24)
                setVal(Fastpskip, False)
                setVal(SlowFirstpass, True)
        End Select

        Select Case Tune.Value
            Case 1 'film
                setVal(DeblockA, -1)
                setVal(DeblockB, -1)
                setVal(PsyTrellis, 0.15)
            Case 2 'animation
                setVal(DeblockA, 1)
                setVal(DeblockB, 1)
                Dim val = If(isDefault, BFrames.DefaultValue, BFrames.Value) + 2
                setVal(BFrames, If(val > 16, 16, val))
                setVal(PsyRD, 0.4)
                setVal(AqStrength, 0.6)
            Case 3 'grain
                setVal(DeblockA, -2)
                setVal(DeblockB, -2)
                setVal(PsyTrellis, 0.25)
                setVal(AqStrength, 0.5)
                setVal(DctDecimate, False)
                setVal(DeadzoneInter, 6)
                setVal(DeadzoneIntra, 6)
                setVal(Ipratio, 1.1)
                setVal(Pbratio, 1.1)
                setVal(Qcomp, 0.8)
            Case 4 'stillimage
                setVal(DeblockA, -3)
                setVal(DeblockB, -3)
                setVal(PsyRD, 2)
                setVal(PsyTrellis, 0.7)
                setVal(AqStrength, 1.2)
            Case 5 'psnr
                setVal(AqMode, 0)
                setVal(Psy, False)
            Case 6 'ssim
                setVal(AqMode, 2)
                setVal(Psy, False)
            Case 7 'fastdecode
                setVal(Deblock, False)
                setVal(Cabac, False)
                setVal(Weightp, 0)
                setVal(Weightb, False)
            Case 8 'zerolatency
                setVal(BFrames, 0)
                setVal(Mbtree, False)
                setVal(RcLookahead, 0)
                setVal(ForceCFR, True)
            Case 9 'touhou
                setVal(AqStrength, 1.3)
                setVal(Deblock, 0)
                setVal(DeblockA, -1)
                setVal(DeblockB, -1)
                setVal(PsyTrellis, 0.2)
        End Select

        Select Case Profile.Value
            Case 1 'baseline
                setVal(Cabac, False)
                setVal(_8x8dct, False)
                setVal(BFrames, 0)
                setVal(Weightp, 0)
            Case 2 'main
                setVal(_8x8dct, False)
        End Select
    End Sub

    Overrides ReadOnly Property Items As List(Of CommandLineParam)
        Get
            If ItemsValue Is Nothing Then
                ItemsValue = New List(Of CommandLineParam)

                Add("Basic",
                    Mode,
                    Preset,
                    Tune,
                    New OptionParam With {.Switch = "--output-depth", .Text = "Depth", .Options = {"8-Bit", "10-Bit"}, .Values = {"8", "10"}},
                    Profile,
                    New OptionParam With {.Switch = "--level", .Text = "Level", .Options = {"Automatic", "1", "1.1", "1.2", "1.3", "2", "2.1", "2.2", "3", "3.1", "3.2", "4", "4.1", "4.2", "5", "5.1", "5.2", "6", "6.1", "6.2"}},
                    Quant,
                    Bitrate)
                Add("Analysis",
                    Trellis,
                    CQM,
                    I4x4,
                    P4x4,
                    B8x8,
                    I8x8,
                    P8x8,
                    _8x8dct,
                    Psy,
                    PsyRD,
                    PsyTrellis,
                    Fastpskip,
                    MixedRefs)
                Add("Analysis 2",
                    DeadzoneInter,
                    DeadzoneIntra,
                    New NumParam With {.Switch = "--mvrange", .Text = "MV Range", .Init = -1},
                    New NumParam With {.Switch = "--mvrange-thread", .Text = "MV Range Thread", .Init = -1},
                    New NumParam With {.Switch = "--nr", .Text = "Noise Reduction"})
                Add("Rate Control",
                    New StringParam With {.Switch = "--zones", .Text = "Zones"},
                    AqMode,
                    AqStrength,
                    AqBiasStrength,
                    Ipratio,
                    Pbratio,
                    Qcomp,
                    New NumParam With {.Switch = "--vbv-maxrate", .Text = "VBV Maxrate"},
                    New NumParam With {.Switch = "--vbv-bufsize", .Text = "VBV Bufsize"},
                    New NumParam With {.Switch = "--vbv-init", .Text = "VBV Init", .Config = {0.5, 1.0, 0.1, 1}, .Init = 0.9},
                    New NumParam With {.Switch = "--crf-max", .Text = "Maximum CRF"},
                    New NumParam With {.Switch = "--qpmin", .Text = "Minimum QP"},
                    New NumParam With {.Switch = "--qpmax", .Text = "Maximum QP", .Init = 69},
                    New NumParam With {.Switch = "--fade-compensate", .Text = "Fade Compensate", .Config = {-1, 10, 0.05, 2}})
                Add("Rate Control 2",
                    New NumParam With {.Switch = "--qpstep", .Text = "QP Step", .Init = 4},
                    New NumParam With {.Switch = "--ratetol", .Text = "Rate Tolerance", .Config = {0, 0, 0.1, 1}, .Init = 1},
                    New NumParam With {.Switch = "--chroma-qp-offset", .Text = "Chroma QP Offset"},
                    New NumParam With {.Switch = "--cplxblur", .Text = "T. Blur Complexity", .Config = {0, 0, 0.1, 1}, .Init = 20},
                    New NumParam With {.Switch = "--qblur", .Text = "Temp. Blur Quants", .Config = {0, 0, 0.1, 1}, .Init = 0.5},
                    Mbtree,
                    New BoolParam With {.Switch = "--cqm4", .Text = "Set all 4x4 quant matrices"},
                    New BoolParam With {.Switch = "--cqm8", .Text = "Set all 8x8 quant matrices"})
                Add("Rate Control 3",
                    New StringParam With {.Switch = "--qpfile", .Text = "QP File", .BrowseFile = True},
                    New StringParam With {.Switch = "--cqmfile", .Text = "CQM File", .BrowseFile = True},
                    New StringParam With {.Switch = "--cqm4i", .Text = "cqm4i"},
                    New StringParam With {.Switch = "--cqm4p", .Text = "cqm4p"},
                    New StringParam With {.Switch = "--cqm8i", .Text = "cqm8i"},
                    New StringParam With {.Switch = "--cqm8p", .Text = "cqm8p"},
                    New StringParam With {.Switch = "--cqm4iy", .Text = "cqm4iy"},
                    New StringParam With {.Switch = "--cqm4ic", .Text = "cqm4ic"},
                    New StringParam With {.Switch = "--cqm4py", .Text = "cqm4py"},
                    New StringParam With {.Switch = "--cqm4pc", .Text = "cqm4pc"})
                Add("Motion Search",
                    Subme,
                    Me_,
                    Weightp,
                    Direct,
                    Merange,
                    Weightb,
                    New BoolParam With {.NoSwitch = "--no-chroma-me", .Init = True, .Text = "Use chroma in motion estimation"})
                Add("Slice Decision",
                    BAdapt,
                    New OptionParam With {.Switch = "--b-pyramid", .Text = "B-Pyramid", .Init = 2, .Options = {"None", "Strict", "Normal"}},
                    BFrames,
                    New NumParam With {.Switch = "--b-bias", .Text = "B-Bias"},
                    RcLookahead,
                    Ref,
                    Scenecut,
                    New NumParam With {.Switch = "--keyint", .Switches = {"-I"}, .Text = "Max GOP Size", .Init = 250},
                    New NumParam With {.Switch = "--min-keyint", .Switches = {"-i"}, .Text = "Min GOP Size"},
                    New NumParam With {.Switch = "--slices", .Text = "Slices"},
                    New NumParam With {.Switch = "--slices-max", .Text = "Slices Max"},
                    New NumParam With {.Switch = "--slice-max-size", .Text = "Slice Max Size"},
                    New NumParam With {.Switch = "--slice-max-mbs", .Text = "Slice Max MBS"},
                    New NumParam With {.Switch = "--slice-min-mbs", .Text = "Slice Min MBS"})
                Add("Slice Decision 2",
                    DctDecimate,
                    New BoolParam With {.Switch = "--intra-refresh", .Text = "Periodic Intra Refresh instead of IDR frames"},
                    New BoolParam With {.Switch = "--open-gop", .Text = "Open GOP"})
                Add("Statistic",
                    New StringParam With {.Switch = "--log-file", .Text = "Log File", .BrowseFile = True},
                    New OptionParam With {.Switch = "--log-file-level", .Text = "Log File Level", .Options = {"None", "Error", "Warning", "Info", "Debug"}, .Values = {"-1", "0", "1", "2", "3"}, .Init = 3},
                    New OptionParam With {.Switch = "--log-level", .Text = "Log Level", .Options = {"None", "Error", "Warning", "Info", "Debug"}, .Values = {"-1", "0", "1", "2", "3"}, .Init = 3},
                    New BoolParam With {.Switch = "--ssim", .Text = "SSIM"},
                    New BoolParam With {.Switch = "--psnr", .Text = "PSNR"})
                Add("VUI",
                    New StringParam With {.Switch = "--sar", .Text = "Sample AR", .Init = "auto", .Menu = s.ParMenu, .ArgsFunc = AddressOf GetSAR},
                    New StringParam With {.Switch = "--crop-rect", .Text = "Crop Rectangle"},
                    New OptionParam With {.Switch = "--videoformat", .Text = "Videoformat", .Options = {"Undefined", "Component", "PAL", "NTSC", "SECAM", "MAC"}},
                    New OptionParam With {.Switch = "--colorprim", .Text = "Colorprim", .Options = {"Undefined", "BT 2020", "BT 470 BG", "BT 470 M", "BT 709", "Film", "SMPTE 170 M", "SMPTE 240 M", "SMPTE 428", "SMPTE 431", "SMPTE 432"}},
                    New OptionParam With {.Switch = "--colormatrix", .Text = "Colormatrix", .Options = {"Undefined", "BT 2020 C", "BT 2020 NC", "BT 470 BG", "BT 709", "FCC", "GBR", "SMPTE 170 M", "SMPTE 2085", "SMPTE 240 M", "YCgCo", "Chroma Derived C", "ICtCp"}},
                    New OptionParam With {.Switch = "--transfer", .Text = "Transfer", .Options = {"Undefined", "BT 1361 E", "BT 2020-10", "BT 2020-12", "BT 470 BG", "BT 470 M", "BT 709", "IEC 61966-2-1", "IEC 61966-2-4", "Linear", "Log 100", "Log 316", "SMPTE 170 M", "SMPTE 2084", "SMPTE 240 M", "SMPTE 428"}},
                    New OptionParam With {.Switch = "--alternative-transfer", .Text = "Alternative Transfer", .Options = {"Undefined", "BT 1361 E", "BT 2020-10", "BT 2020-12", "BT 470 BG", "BT 470 M", "BT 709", "IEC 61966-2-1", "IEC 61966-2-4", "Linear", "Log 100", "Log 316", "SMPTE 170 M", "SMPTE 2084", "SMPTE 240 M", "SMPTE 428"}},
                    New OptionParam With {.Switch = "--overscan", .Text = "Overscan", .Options = {"Undefined", "Show", "Crop"}},
                    New OptionParam With {.Switch = "--range", .Text = "Range", .Options = {"Auto", "TV", "PC"}},
                    New OptionParam With {.Switch = "--nal-hrd", .Text = "Signal HRD Info", .Options = {"None", "VBR", "CBR"}},
                    New NumParam With {.Switch = "--chromaloc", .Text = "Chromaloc", .Config = {0, 5}},
                    New BoolParam With {.Switch = "--filler", .Text = "Force hard-CBR and generate filler"},
                    New BoolParam With {.Switch = "--pic-struct", .Text = "Force pic_struct in Picture Timing SEI"})
                Add("Input/Output",
                    New StringParam With {.Switch = "--opencl-clbin", .Text = "OpenCl clbin", .BrowseFile = True},
                    New StringParam With {.Switch = "--dump-yuv", .Text = "Dump YUV", .BrowseFile = True},
                    New StringParam With {.Switch = "--tcfile-in", .Text = "TC File In", .BrowseFile = True},
                    New StringParam With {.Switch = "--tcfile-out", .Text = "TC File Out", .BrowseFile = True},
                    New StringParam With {.Switch = "--index", .Text = "Index File", .BrowseFile = True},
                    New StringParam With {.Switch = "--timebase", .Text = "Timebase"},
                    New StringParam With {.Switch = "--input-fmt", .Text = "Input File Format"},
                    PipingToolAVS,
                    PipingToolVS,
                    Demuxer,
                    New OptionParam With {.Switch = "--input-depth", .Text = "Input Depth", .Options = {"Automatic", "8", "10", "12", "14", "16"}},
                    New OptionParam With {.Switch = "--input-csp", .Text = "Input Csp", .Options = {"Automatic", "I420", "YV12", "NV12", "NV21", "I422", "YV16", "NV16", "YUYV", "UYVY", "I444", "YV24", "BGR", "BGRA", "RGB"}},
                    New OptionParam With {.Switch = "--input-range", .Text = "Input Range", .Options = {"Automatic", "TV", "PC"}},
                    New OptionParam With {.Switch = "--output-csp", .Text = "Output Csp", .Options = {"Automatic", "I420", "I422", "I444", "RGB"}},
                    Muxer,
                    New OptionParam With {.Switch = "--fps", .Text = "Frame Rate", .Options = {"Automatic", "24000/1001", "24", "25", "30000/1001", "30", "50", "60000/1001", "60"}})
                Add("Input/Output 2",
                    New OptionParam With {.Switch = "--pulldown", .Text = "Pulldown", .Options = {"None", "22", "32", "64", "Double", "Triple", "Euro"}},
                    New OptionParam With {.Switch = "--avcintra-class", .Text = "AVC Intra Class", .Options = {"None", "50", "100", "200"}},
                    New OptionParam With {.Switch = "--avcintra-flavor", .Text = "AVC Intra Flavor", .Options = {"Panasonic", "Sony"}},
                    New NumParam With {.Switch = "--threads", .Text = "Threads"},
                    New NumParam With {.Switch = "--lookahead-threads", .Text = "Lookahead Threads"},
                    Seek, Frames,
                    New NumParam With {.Switch = "--sync-lookahead", .Text = "Sync Lookahead"},
                    New NumParam With {.Switch = "--asm", .Text = "ASM"},
                    New NumParam With {.Switch = "--opencl-device", .Text = "OpenCl Device"},
                    New NumParam With {.Switch = "--sps-id", .Text = "SPS/PPS ID"})
                Add("Input/Output 3",
                    New BoolParam With {.Switch = "--fake-interlaced", .Text = "Fake Interlaced"},
                    New BoolParam With {.Switch = "--stitchable", .Text = "Stitchable"},
                    New BoolParam With {.Switch = "--sliced-threads", .Text = "Low-latency but lower-efficiency threading"},
                    New BoolParam With {.Switch = "--thread-input", .Text = "Run Avisynth in its own thread"},
                    New BoolParam With {.Switch = "--non-deterministic", .Text = "Non Deterministic"},
                    New BoolParam With {.Switch = "--cpu-independent", .Text = "Ensure reproducibility across different CPUs"},
                    New BoolParam With {.Switch = "--no-asm", .Text = "Disable all CPU optimizations"},
                    New BoolParam With {.Switch = "--opencl", .Text = "Enable use of OpenCL"},
                    ForceCFR,
                    New BoolParam With {.Switch = "--bluray-compat", .Text = "Enable compatibility hacks for Blu-ray support"},
                    New BoolParam With {.Switch = "--aud", .Text = "Use access unit delimiters"},
                    New BoolParam With {.Switch = "--quiet", .Text = "Quiet Mode"},
                    New BoolParam With {.Switch = "--verbose", .Switches = {"-v"}, .Text = "Print stats for each frame"},
                    New BoolParam With {.Switch = "--dts-compress", .Text = "Eliminate initial delay with container DTS hack"},
                    New BoolParam With {.Switch = "--progress-header", .NoSwitch = "--no-progress-header", .Text = "Show progress header", .Init = True, .VisibleFunc = Function() Package.x264Type <> x264Type.Patman})
                Add("Misc",
                    New StringParam With {.Switch = "--video-filter", .Switches = {"--vf"}, .Text = "Video Filter"},
                    New OptionParam With {.Switches = {"--tff", "--bff"}, .Text = "Interlaced", .Options = {"Unset ", "Top Field First", "Bottom Field First"}, .Values = {"", "--tff", "--bff"}},
                    New OptionParam With {.Switch = "--frame-packing", .Text = "Frame Packing", .IntegerValue = True, .Options = {"Checkerboard", "Column Alternation", "Row Alternation", "Side By Side", "Top Bottom", "Frame Alternation", "Mono", "Tile Format"}},
                    Deblock,
                    DeblockA,
                    DeblockB,
                    SlowFirstpass,
                    New BoolParam With {.Switch = "--constrained-intra", .Text = "Constrained Intra Prediction"},
                    Cabac
                )
                Add("Custom",
                    Custom,
                    CustomFirstPass,
                    CustomSecondPass
                )
                Add("Other",
                    OverrideTargetFileName, TargetFileName, TargetFileNamePreview,
                    New LineParam(),
                    Chunks,
                    CompCheck, CompCheckAimedQuality
                )
            End If

            Return ItemsValue
        End Get
    End Property

    Public Overrides Sub ShowHelp(options As String())
        Using td As New TaskDialog(Of String)
            td.Title = String.Join(", ", options)
            td.AddCommand("Online Help")
            td.AddCommand("Console Help")

            Select Case td.Show
                Case "Online Help"
                    Dim ret = GetHelpOption(options)

                    If ret <> "" Then
                        g.ShellExecute("http://www.chaneru.com/Roku/HLS/X264_Settings.htm#" + ret.TrimStart("-"c))
                    End If
                Case "Console Help"
                    ShowConsoleHelp(Package.x264, options)
            End Select
        End Using
    End Sub

    Private BlockValueChanged As Boolean

    Protected Overrides Sub OnValueChanged(item As CommandLineParam)
        If BlockValueChanged Then Exit Sub

        If item Is Preset OrElse item Is Tune OrElse item Is Profile Then
            BlockValueChanged = True
            ApplyValues(False)
            BlockValueChanged = False
        End If

        If DeblockA.NumEdit IsNot Nothing Then
            DeblockA.NumEdit.Enabled = Deblock.Value
            DeblockB.NumEdit.Enabled = Deblock.Value

            PsyRD.NumEdit.Enabled = Psy.Value
            PsyTrellis.NumEdit.Enabled = Psy.Value
        End If

        If item IsNot TargetFileName AndAlso item IsNot TargetFileNamePreview Then TargetFileName.TextChangedAction?.Invoke(TargetFileName.Value)

        MyBase.OnValueChanged(item)
    End Sub

    Overloads Overrides Function GetCommandLine(
        includePaths As Boolean, includeExecutable As Boolean, Optional pass As Integer = 1) As String

        Return GetArgs(pass, 0, 0, Nothing, p.Script, p.VideoEncoder.OutputPath.DirAndBase + p.VideoEncoder.OutputExtFull, includePaths, includeExecutable)
    End Function

    Overrides Function GetCommandLinePreview() As String
        Dim ret = GetCommandLine(True, True)

        If Mode.Value = x264RateMode.TwoPass Then
            ret += BR2 + GetCommandLine(True, True, 2)
        ElseIf Mode.Value = x264RateMode.ThreePass Then
            'Specific order 1 > 3 > 2 is correct!
            ret += BR2 + GetCommandLine(True, True, 3)
            ret += BR2 + GetCommandLine(True, True, 2)
        End If

        Return ret
    End Function

    Overloads Function GetArgs(
        pass As Integer,
        startFrame As Integer,
        endFrame As Integer,
        chunkName As String,
        script As VideoScript,
        targetPath As String,
        includePaths As Boolean,
        includeExecutable As Boolean) As String

        ApplyValues(True)

        Dim sb As New StringBuilder
        Dim pipeTool = If(p.Script.IsAviSynth, PipingToolAVS, PipingToolVS).ValueText
        Dim isSingleChunk = endFrame = 0

        If includePaths AndAlso includeExecutable Then
            Dim pipeCmd = ""

            If pipeTool = "automatic" Then
                If p.Script.IsAviSynth Then
                    pipeTool = If(Package.x264Type = x264Type.Vanilla, "avs2pipemody4m", "none")
                ElseIf p.Script.IsVapourSynth Then
                    pipeTool = If(Package.x264Type = x264Type.Vanilla, "vspipey4m", "none")
                End If
                'If p.Script.IsAviSynth OrElse Package.x264.Version.ToLowerInvariant.ContainsAny("amod", "djatom", "patman") Then
                '    pipeTool = "none"
                'ElseIf p.Script.IsVapourSynth Then
                '    pipeTool = "vspipey4m"
                'End If
            End If

            Select Case pipeTool
                Case "vspipey4m"
                    pipeCmd = Package.vspipe.Path.Escape + " " + script.Path.Escape + " - --container y4m | "
                Case "vspiperaw"
                    pipeCmd = Package.vspipe.Path.Escape + " " + script.Path.Escape + " - | "
                Case "avs2pipemody4m"
                    Dim dll As String = ""

                    If FrameServerHelp.IsPortable Then
                        dll = " -dll=" + Package.AviSynth.Path.Escape
                    End If

                    pipeCmd = Package.avs2pipemod.Path.Escape + dll + " -y4mp " + script.Path.Escape + " | "
                Case "avs2pipemodraw"
                    Dim dll As String = ""

                    If FrameServerHelp.IsPortable Then
                        dll = " -dll=" + Package.AviSynth.Path.Escape
                    End If

                    pipeCmd = Package.avs2pipemod.Path.Escape + dll + " -rawvideo " + script.Path.Escape + " | "
                Case "ffmpegy4m"
                    pipeCmd = Package.ffmpeg.Path.Escape + If(p.Script.IsVapourSynth, " -f vapoursynth", "") + " -i " + script.Path.Escape + " -f yuv4mpegpipe -strict -1 -loglevel fatal -hide_banner - | "
                Case "ffmpegraw"
                    pipeCmd = Package.ffmpeg.Path.Escape + If(p.Script.IsVapourSynth, " -f vapoursynth", "") + " -i " + script.Path.Escape + " -f rawvideo -strict -1 -loglevel fatal -hide_banner - | "
            End Select

            sb.Append(pipeCmd + Package.x264.Path.Escape)
        End If

        If Mode.Value = x264RateMode.TwoPass OrElse Mode.Value = x264RateMode.ThreePass Then
            sb.Append(" --pass " & pass)

            If pass = 1 Then
                If CustomFirstPass.Value <> "" Then
                    sb.Append(" " + CustomFirstPass.Value)
                End If
            Else
                If CustomSecondPass.Value <> "" Then
                    sb.Append(" " + CustomSecondPass.Value)
                End If
            End If
        End If

        If Mode.Value = x264RateMode.Quantizer Then
            If Not IsCustom(pass, "--qp") Then
                sb.Append(" --qp " + CInt(Quant.Value).ToString)
            End If
        ElseIf Mode.Value = x264RateMode.Quality Then
            If Quant.Value <> Quant.DefaultValue AndAlso Not IsCustom(pass, "--crf") Then
                sb.Append(" --crf " + Quant.Value.ToInvariantString)
            End If
        Else
            If Not IsCustom(pass, "--bitrate") Then
                sb.Append(" --bitrate " & If(pass = 1, Bitrate.Value, p.VideoBitrate))
            End If
        End If

        Dim q = From i In Items Where i.GetArgs <> "" AndAlso Not IsCustom(pass, i.GetSwitches())

        If q.Count > 0 Then
            sb.Append(" " + q.Select(Function(item) item.GetArgs).Join(" "))
        End If

        If includePaths Then
            Dim dmx = Demuxer.ValueText

            If pipeTool = "none" AndAlso FrameServerHelp.IsPortable AndAlso Package.x264Type <> x264Type.Vanilla Then
                sb.Append(" --synth-lib " + FrameServerHelp.GetSynthPath.Escape)
            End If

            If dmx = "automatic" Then
                If pipeTool = "none" Then
                    dmx = ""
                ElseIf pipeTool.EndsWith("y4m") Then
                    dmx = "y4m"
                ElseIf pipeTool.EndsWith("raw") Then
                    dmx = "raw"
                End If
            End If

            If dmx <> "" Then
                sb.Append($" --demuxer {dmx}")

                If isSingleChunk Then
                    If Seek.Value > 0 Then
                        sb.Append($" --seek {Seek.Value}")
                    End If

                    If Frames.Value = 0 Then
                        sb.Append($" --frames {script.GetFrameCount - Seek.Value}")
                    Else
                        sb.Append($" --frames {Frames.Value}")
                    End If
                Else
                    sb.Append($" --seek {startFrame} --frames {endFrame - startFrame + 1}")
                End If

                If dmx = "raw" Then
                    Dim info = script.GetInfo
                    sb.Append($" --input-res {info.Width}x{info.Height}")

                    If Not sb.ToString.Contains("--fps ") Then
                        sb.Append($" --fps {info.FrameRateNum}/{info.FrameRateDen}")
                    End If
                End If
            End If

            If Mode.Value = x264RateMode.TwoPass OrElse Mode.Value = x264RateMode.ThreePass Then
                sb.Append(" --stats " + (Path.Combine(p.TempDir, p.TargetFile.Base + chunkName + ".stats")).Escape)
            End If

            If (Mode.Value = x264RateMode.ThreePass AndAlso pass <> 2) OrElse (Mode.Value = x264RateMode.TwoPass AndAlso pass = 1) Then
                sb.Append(" --output NUL")
            Else
                sb.Append(" --output " + (targetPath.DirAndBase + chunkName + targetPath.ExtFull).Escape)
            End If

            sb.Append(" " & If(pipeTool = "none", script.Path.Escape, "-"))
        End If

        Return Macro.Expand(sb.ToString.Trim.FixBreak.Replace(BR, " "))
    End Function

    Function GetPartitionsArg() As String
        If I4x4.Value = I4x4.DefaultValue AndAlso I8x8.Value = I8x8.DefaultValue AndAlso
            P4x4.Value = P4x4.DefaultValue AndAlso P8x8.Value = P8x8.DefaultValue AndAlso
            B8x8.Value = B8x8.DefaultValue Then

            Return Nothing
        End If

        If I4x4.Value AndAlso I8x8.Value AndAlso P4x4.Value AndAlso P8x8.Value AndAlso B8x8.Value Then
            Return "--partitions all"
        ElseIf Not I4x4.Value AndAlso Not I8x8.Value AndAlso Not P4x4.Value AndAlso Not P8x8.Value AndAlso Not B8x8.Value Then
            Return "--partitions none"
        End If

        Dim partitions As String = ""

        If I4x4.Value Then partitions += "i4x4,"
        If I8x8.Value Then partitions += "i8x8,"
        If P4x4.Value Then partitions += "p4x4,"
        If P8x8.Value Then partitions += "p8x8,"
        If B8x8.Value Then partitions += "b8x8"

        If partitions <> "" Then
            Return "--partitions " + partitions.TrimEnd(","c)
        End If

        Return ""
    End Function

    Function IsCustom(pass As Integer, switches As String()) As Boolean
        If switches Is Nothing Then Return False

        Return switches.Any(Function(switch) IsCustom(pass, switch))
    End Function

    Function IsCustom(pass As Integer, switch As String) As Boolean
        If switch = "" Then Return False

        If Mode.Value = x264RateMode.TwoPass OrElse Mode.Value = x264RateMode.ThreePass Then
            If pass = 1 Then
                If CustomFirstPass.Value?.Contains(switch + " ") OrElse
                    CustomFirstPass.Value?.EndsWith(switch) Then
                    Return True
                End If
            Else
                If CustomSecondPass.Value?.Contains(switch + " ") OrElse
                    CustomSecondPass.Value?.EndsWith(switch) Then
                    Return True
                End If
            End If
        End If

        If Custom.Value?.Contains(switch + " ") OrElse Custom.Value?.EndsWith(switch) Then
            Return True
        End If

        Return False
    End Function
End Class

Public Enum x264RateMode
    Bitrate
    Quantizer
    Quality
    <DispName("Two Pass")> TwoPass
    <DispName("Three Pass")> ThreePass
End Enum

Public Enum x264Type
    Vanilla
    Patman
    DJATOM
End Enum