Classes
class	AudioStreamInfo
	Describes an elementary audio stream. More...

class	Block
	Provides functionality for audio and video encoding, decoding and transforming. More...

class	DataStreamInfo
	Describes a generic data stream. More...

class	ErrorInfo
	Describes an AVBlocks error. More...

class	Hardware
	Enumerates available hardware codecs. More...

class	HwCodec
	Describes a hardware encoder, decoder or filter. More...

class	HwDevice
	Describes a device that can be used for hardware accelerated encoding, decoding or processing. More...

interface	IImmutable

class	Library
	Initializes AVBlocks and manages license information. More...

class	MediaBuffer
	A buffer for media data. More...

class	MediaInfo
	Analyzes a file or a stream and provides information about its type and properties. More...

class	MediaPin
	MediaPin represents an elementary media stream. More...

class	MediaPinList
	A collection of media pins. More...

class	MediaSample
	Represents one or more samples of media data. More...

class	MediaSocket
	An input or output point of the Transcoder. More...

class	MediaSocketList
	A collection of media sockets. More...

class	Meta
	Metadata attribute names (tags) More...

class	MetaAttribute
	MetaAttribute describes a textual meta information that is part of an audio or video file. More...

class	MetaAttributeList
	A collection of meta attributes. More...

class	Metadata
	Metadata describes meta information that is part of an audio or video file. More...

class	MetaPicture
	MetaPicture describes a meta image that is part of an audio or video file. More...

class	MetaPictureList
	A collection of meta pictures. More...

class	MimeType
	Multipurpose Internet Mail Extensions (MIME) used in AVBlocks. More...

class	ObjectCollection
	An ordered collection of items used in AVBlocks. More...

class	Param
	Defines parameters that can be passed to the transcoder and to the components that are used in the transcoding process. More...

class	ParameterList
	A name-value collection used for passing parameters to different AVBlocks components.

class	PinConnection
	Defines pin connection disposition. More...

class	Preset
	Defines output presets supported by AVBlocks. More...

class	StreamInfo
	Provides properties and operations that are common for all elementary streams. More...

class	Transcoder
	Provides functionality for audio and video encoding, decoding and transforming. More...

class	TranscoderContinueEventArgs
	Contains the parameters of the Transcoder.OnContinue event. More...

class	TranscoderInputChangeEventArgs
	Contains the parameters of the Transcoder.OnInputChange event. More...

class	TranscoderProgressEventArgs
	Contains the parameters of the Transcoder.OnProgress event. More...

class	TranscoderStatusEventArgs
	Contains the parameters of the Transcoder.OnStatus event. More...

class	UnmanagedMediaBuffer
	Unmanaged buffer for media data. More...

class	VideoStreamInfo
	Describes an elementary video stream. More...

Enumerations
enum	AlphaCompositingMode { Over = 1 , In = 2 , Out = 3 , Atop = 4 , Xor = 5 , Plus = 6 }
	Defines the way a foreground image will be combined with background video. More...

enum	AudioChannelFlags { None = 0x0 , Left = 0x1 , Right = 0x2 , Center = 0x4 , LFE = 0x8 , BackLeft = 0x10 , BackRight = 0x20 , LeftCenter = 0x40 , RightCenter = 0x80 , BackCenter = 0x100 , SideLeft = 0x200 , SideRight = 0x400 , TopCenter = 0x800 , TopFrontLeft = 0x1000 , TopFrontCenter = 0x2000 , TopFrontRight = 0x4000 , TopBackLeft = 0x8000 , TopBackCenter = 0x10000 , TopBackRight = 0x20000 , LayoutMono = Center , LayoutStereo = Left \| Right , Layout2p1 = Left \| Right \| LFE , LayoutSurround = Left \| Right \| Center \| BackCenter , LayoutQuad = Left \| Right \| BackLeft \| BackRight , Layout4p1 = Left \| Right \| LFE \| BackLeft \| BackRight , Layout5p1 = Left \| Right \| Center \| LFE \| BackLeft \| BackRight , Layout7p1Surround = Left \| Right \| Center \| LFE \| BackLeft \| BackRight \| SideLeft \| SideRight , Layout5p1Surround = Left \| Right \| Center \| LFE \| SideLeft \| SideRight , Layout7p1 = Left \| Right \| Center \| LFE \| BackLeft \| BackRight \| LeftCenter \| RightCenter }
	Defines the speaker location of one or more audio channels. More...

enum	AVBlocksError { UnlicensedFeature = 9 , LibraryNotInitialized = 10 }
	Defines API usage errors. More...

enum	BitrateMode { Unknown = 0 , CBR = 1 , VBR = 2 , ABR = 3 }
	Defines the bitrate mode of the audio/video stream. More...

enum	CodecError { Init = 1 , NoConfigData = 2 , NoOutput = 3 , OutputBufferNotEnough = 4 , Unsupported = 5 , Failed = 6 , NotInitialized = 7 , Null = 8 , EOS = 9 , Alloc = 10 , InvalidStream = 11 , NotImplemented = 12 , InvalidParams = 13 , InvalidOperation = 14 , MissingDependency = 15 , StreamOpen = 16 , StreamRead = 17 , StreamWrite = 18 , StreamSeek = 19 , BufferFull = 20 , MissingHardwareIntelQuickSync = 21 , MissingHardwareAmdVce = 22 , MissingHardwareNvidiaNVENC = 23 }
	Common errors for encoders, decoders, muxers, demuxers and other A/V components. More...

enum	ColorFormat { Unknown = 0 , YV12 = 1 , NV12 = 2 , YUY2 = 3 , UYVY = 4 , YUV411 = 5 , YUV420 = 6 , YUV422 = 7 , YUV444 = 8 , Y411 = 9 , Y41P = 10 , BGR32 = 11 , BGR24 = 12 , BGR565 = 13 , BGR555 = 14 , BGR444 = 15 , GRAY = 16 , YUV420A = 17 , YUV422A = 18 , YUV444A = 19 , YVU9 = 20 , BGRA32 = 21 }
	Defines constants for various color formats. More...

enum	DeinterlacingMethod { NoDeinterlacing = 0 , Duplicate = 1 , Blend = 2 , Median = 3 , EdgeDetect = 4 , MedianThreshold = 5 , CAVT = 6 }
	Defines video deinterlacing methods. More...

enum	ErrorFacility { Success = 0 , SystemWindows = 1 , SystemMacOSStatus = 2 , SystemMacMach = 3 , SystemPosix = 4 , AVBlocks = 5 , Transcoder = 6 , Codec = 9 }
	Describes the AVBlocks facilities that could generate errors. More...

enum	H264DeblockingFilter { All = 0 , Off = 1 , InSlice = 2 }
	Defines H.264/AVC deblocking filter mode. More...

enum	H264DirectPredMode { Temporal = 0 , Spatial = 1 }
	Defines H.264/AVC direct prediction mode. More...

enum	H264EntropyCodingMode { CAVLC = 0 , CABAC = 1 }
	Defines H.264/AVC entropy coding modes. More...

enum	H264MeMethod { Full = 0 , ClassicLog = 1 , Log = 2 , EPZS = 3 , FullOrthogonal = 4 , LogOrthogonal = 5 , UMH = 8 }
	Defines the motion estimation methods used when encoding H.264/AVC. More...

enum	H264MeSplitMode { Only16x16 = 0 , DownTo8x8 = 1 , DownTo4x4 = 2 }
	Defines the block sizes for which motion estimation should be done. More...

enum	H264PicCodingType { Frames = 0 , Fields = 1 }
	Defines the picture coding type when encoding H.264/AVC. More...

enum	H264Profile { None = 0 , Baseline = 66 , Main = 77 , High = 100 , High10 = 110 , High422 = 122 , High444 = 144 }
	Defines H.264/AVC profiles. More...

enum	H264RateControlMethod { ABR = 2 , ConstantQuant = 3 }
	Defines methods for bitrate contorl when encoding H.264/AVC. More...

enum	H265Level { None = 0 , L1 = 30 , L2 = 60 , L21 = 63 , L3 = 90 , L31 = 93 , L4 = 120 , L41 = 123 , L5 = 150 , L51 = 153 , L52 = 156 , L6 = 180 , L61 = 183 , L62 = 186 }
	H.265 / HEVC Levels. More...

enum	H265Profile { None = 0 , Main = 1 , Main10 = 2 }
	H.265 / HEVC Profiles. More...

enum	H265Tier { Main = 0 , High = 1 }
	H.265 / HEVC Tiers. More...

enum	HardwareEncoder { Off = 0 , Auto = 1 , AMD = 2 , Intel = 3 , Nvidia = 4 }
	Defines known hardware encoders. More...

enum	HwApi { None = 0 , IntelMedia = 1 , Nvenc = 2 , AmdOpenVideo = 3 , AmdMedia = 4 , MediaFoundation = 5 }
	API for using hardware engines. More...

enum	HwCodecType { None = 0 , H264Encoder = 1 , H265Encoder = 2 }
	Hardware Codec type. More...

enum	HwEngine { None = 0 , QuickSyncVideo = 1 , Nvenc = 2 , VideoCodingEngine = 3 }
	Hardware engine for encoding/decoding/processing. More...

enum	HwVendor { None = 0 , Intel = 1 , Nvidia = 2 , Amd = 3 }
	Hardware Vendor. More...

enum	InterpolationMethod { Unknown = 0 , NearestNeighbor = 1 , Linear = 2 , Cubic = 4 , Super = 8 , Lanczos = 16 }
	Defines methods for sample interpolation. More...

enum	LicenseStatusFlags { Ready = 0 , ValidationInProgress = 1 , DemoBuild = 2 }
	Defines the AVBlocks license status. More...

enum	MediaSampleFlags { None = 0x0 , KeyFrame = 0x1 , Bos = 0x2 , Eos = 0x4 }
	Defines various media sample features. More...

enum	MediaType { Unknown = 0 , Audio = 1 , Video = 2 , Text = 3 , Data = 4 }
	Defines media types. More...

enum	MetaPictureType { Other = 0 , FileIcon = 1 , OtherFileIcon = 2 , FrontCover = 3 , BackCover = 4 , LeafletPage = 5 , Media = 6 , LeadArtist = 7 , Artist = 8 , Conductor = 9 , Band = 10 , Composer = 11 , TextWriter = 12 , RecordingLocation = 13 , DuringRecording = 14 , DuringPerformance = 15 , VideoCapture = 16 , BrightColoredFish = 17 , Illustration = 18 , ArtistLogotype = 19 , PublisherLogotype = 20 }
	Picture type defined as in ID3. More...

enum	PcmFlags { None = 0 , Unsigned = 0x1 , Float = 0x2 , BigEndian = 0x4 , NonInterleaved = 0x8 }
	Defines constants for various LPCM properties. More...

enum	PictureType { None = 0 , I = 1 , P = 2 , B = 3 , D = 4 }
	Defines video picture types (I/P/B) More...

enum	ScanType { Unknown = 0 , Progressive = 1 , TopFieldFirst = 2 , BottomFieldFirst = 3 }
	Defines video interlace/scan types. More...

enum	StereoMode { None = 0 , LR = 2 , MidSide = 3 , Joint = 4 }
	Defines stereo mode in MPEG Audio and AAC. More...

enum	StreamSubType { Unknown = 0 , None = 65535 , AacAdts = 1 , AacAdif = 2 , AacMp4 = 3 , AvcC = 4 , Avc1 = AvcC , MpegTsBdav = 5 , MpegAudioLayer1 = 6 , MpegAudioLayer2 = 7 , MpegAudioLayer3 = 8 , G726PackedRFC3551 = 9 , G726PackedAAL2 = 10 , Mpeg1System = 11 , Mpeg2System = 12 , AvcAnnexB = 13 , AacRaw = 14 }
	Defines audio and video stream subtypes. More...

enum	StreamType { Unknown = 0 , BEGIN_AUDIO = 0x1000 , LPCM = 0x1001 , ALawPCM = 0x1002 , MuLawPCM = 0x1003 , VideoDvdPCM = 0x1004 , Ac3 = 0x1005 , Dts = 0x1006 , MpegAudio = 0x1007 , Vorbis = 0x1008 , Aac = 0x1009 , AmrNarrowBand = 0x100A , AmrWideBand = 0x100B , G726ADPCM = 0x100C , Wma = 0x100D , Wma_Professional = 0x100E , Wma_Lossless = 0x100F , END_AUDIO = 0x1FFF , BEGIN_VIDEO = 0x2000 , UncompressedVideo = 0x2001 , Mpeg1Video = 0x2002 , Mpeg2Video = 0x2003 , Mpeg4Video = 0x2004 , H261 = 0x2005 , H263 = 0x2006 , H264 = 0x2007 , Avc = H264 , Wmv = 0x2008 , Mjpeg = 0x2009 , Vc1 = 0x200A , Avs = 0x200B , Vp8 = 0x200C , Theora = 0x200D , H265 = 0x200E , Hevc = H265 , END_VIDEO = 0x2FFF , BEGIN_CONTAINER = 0x3000 , Avi = 0x3001 , Mp4 = 0x3002 , Asf = 0x3003 , MpegPS = 0x3004 , MpegTS = 0x3005 , MpegPES = 0x3006 , Wave = 0x3007 , Flv = 0x3008 , Ogg = 0x3009 , WebM = 0x300A , END_CONTAINER = 0x3FFF , BEGIN_IMAGE = 0x4000 , Bmp = 0x4001 , Png = 0x4002 , Jpeg = 0x4003 , Tiff = 0x4004 , Gif = 0x4005 , END_IMAGE = 0x4FFF , BEGIN_DATA = 0x5000 , Teletext = 0x5001 , MpegPsiPackets = 0x5002 , MpegTsPackets = 0x5003 , END_DATA = 0x5FFF }
	Defines major audio and video stream types, and file formats (a.k.a. More...

enum	TranscoderError { NoChain = 1 , UndefinedSocketType = 2 , UnsupportedInterlacedConversion = 3 , NoCodec = 4 , UnsupportedVideoConversion = 5 , InputFull = 6 , BufferFull = InputFull , InputNeeded = 7 }
	Defines Transcoder specific errors. More...

enum	TranscoderStatus { Completed = 0 }
	Defines the status of a transcoder operation. More...

enum	Use { Off = 0 , On = 1 , Auto = 2 }
	Specifies whether particular feature should be used. More...

Enumeration Type Documentation

◆ AlphaCompositingMode

enum AlphaCompositingMode

Defines the way a foreground image will be combined with background video.

Enumerator
Over	= 1 Foreground over Background - in effect, normal painting operation. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) + (1 - Fa) * (Ba * Brgb) Normally, alpha blending implies a background alpha of 1.0 (Ba = 1.0), so the compositing result Rrgb becomes: Rrgb = (Fa * Frgb) + (1 - Fa) * Brgb Fa and Ba are alpha density value with range from 0.0 to 1.0
In	= 2 Foreground in Background - the alpha compositing equivalent of clipping / itersection. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) * Ba Fa and Ba are alpha density value with range from 0.0 to 1.0
Out	= 3 Foreground outside Background. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) * (1 - Ba) Fa and Ba are alpha density value with range from 0.0 to 1.0
Atop	= 4 Foreground atop Background. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) * Ba + (1 - Fa) * (Ba * Brgb) Fa and Ba are alpha density value with range from 0.0 to 1.0
Xor	= 5 Foreground xor Background. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) * (1 - Ba) + (1 - Fa) * (Ba * Brgb) Fa and Ba are alpha density value with range from 0.0 to 1.0
Plus	= 6 Foreground plus Background. If Fa is foreground alpha, Frgb is foreground RGB, Ba is background alpha, Brgb is background RGB, then Rrgb is the compositing result: Rrgb = (Fa * Frgb) + (Ba * Brgb) Fa and Ba are alpha density value with range from 0.0 to 1.0

◆ AudioChannelFlags

enum AudioChannelFlags

Defines the speaker location of one or more audio channels.

These channel constants are expressed as bit flags and can be combined together. A number of common speaker layouts are defined for convenience.

Enumerator
None	= 0x0 No flag is set.
Left	= 0x1 Left
Right	= 0x2 Right
Center	= 0x4 Center
LFE	= 0x8 Low-frequency effect. Subwoofer.
BackLeft	= 0x10 Back-left. Also known as Left Surround.
BackRight	= 0x20 Back-right. Also known as Right Surround.
LeftCenter	= 0x40 Front, left of center.
RightCenter	= 0x80 Front, right of center.
BackCenter	= 0x100 Back-center. Also known as Center Surround.
SideLeft	= 0x200 Side-left. Also known as Left Surround Direct.
SideRight	= 0x400 Side-right. Also known as Right Surround Direct.
TopCenter	= 0x800 Top-center. Also known as Top Center Surround.
TopFrontLeft	= 0x1000 Top-front-left. Also known as Vertical Height Left.
TopFrontCenter	= 0x2000 Top-front-center. Also known as Vertical Height Center.
TopFrontRight	= 0x4000 Top-front-right. Also known as Vertical Height Right.
TopBackLeft	= 0x8000 Top-back-left
TopBackCenter	= 0x10000 Top-back-center
TopBackRight	= 0x20000 Top-back-right
LayoutMono	Mono.
LayoutStereo	Stereo.
Layout2p1	Standard 3-channel layout (2.1)
LayoutSurround	Standard 4-channel layout. Surround.
LayoutQuad	Alternative 4-channel layout.
Layout4p1	Standard 5-channel layout (4.1)
Layout5p1	Standard 6-channel layout (5.1)
Layout7p1Surround	Standard 8-channel layout (7.1). Surround.
Layout5p1Surround	Alternative 6-channel layout (5.1). Surround.
Layout7p1	Alternative 8-channel layout (7.1)

◆ AVBlocksError

enum AVBlocksError

Defines API usage errors.

These errors are raised when the AVBlocks API is used incorrectly.

Enumerator

UnlicensedFeature

= 9

A required feature (codec/format) is not licensed and demo mode is not enabled.

See also: Transcoder.AllowDemoMode

LibraryNotInitialized

= 10

Library is not initialized.

See also: Library.Initialize

◆ BitrateMode

enum BitrateMode

Defines the bitrate mode of the audio/video stream.

Enumerator
Unknown	= 0 The bitrate mode is not specified or unknown.
CBR	= 1 Constant bitrate. For uncompressed audio/video with constant bitrate the quality is also constant. For compressed audio/video with constant bitrate the quality may be constant or variable.
VBR	= 2 Variable bitrate - quality oriented. Constant quality (more or less).
ABR	= 3 Average bitrate. Guarantees a predictable audio/video size similar to CBR. The bitrate changes to achieve the best quality within the available bitrate capacity.

◆ CodecError

enum CodecError

Common errors for encoders, decoders, muxers, demuxers and other A/V components.

Enumerator
Init	= 1 Failed to initialize or open a codec.
NoConfigData	= 2 Decoder config data is required, but missing.
NoOutput	= 3 No output has been generated.
OutputBufferNotEnough	= 4 The output buffer is not big enough for the generated output data.
Unsupported	= 5 Unsupported format or operation.
Failed	= 6 The operation failed for unknown reason.
NotInitialized	= 7 The operation cannot be completed because the component is not initialized.
Null	= 8 One or more of the input parameters are null but are expected to be valid pointers/references.
EOS	= 9 End of stream; no more data.
Alloc	= 10 Failed to allocate memory.
InvalidStream	= 11 Invalid bitstream.
NotImplemented	= 12 The operation is not implemented yet.
InvalidParams	= 13 At least one of the input parameters has an invalid value for the specified operation. Check ErrorInfo.Hint for details.
InvalidOperation	= 14 The operation is not allowed. Check ErrorInfo.Hint for details.
MissingDependency	= 15 A required library/dependency is not present. Check ErrorInfo.Hint for details.
StreamOpen	= 16 Could not open a user stream (System.IO.Stream).
StreamRead	= 17 Could not read from a user stream (System.IO.Stream).
StreamWrite	= 18 Could not write to a user stream (System.IO.Stream).
StreamSeek	= 19 Could not seek in a user stream (System.IO.Stream).
BufferFull	= 20 One of the input/output buffers is full and cannot accept more data.
MissingHardwareIntelQuickSync	= 21 Intel QuickSync Video hardware not found.
MissingHardwareAmdVce	= 22 AMD VCE hardware not found.
MissingHardwareNvidiaNVENC	= 23 NVIDIA NVENC hardware not found.

◆ ColorFormat

enum ColorFormat

Defines constants for various color formats.

A color format is combination of color space, color depth, chroma sub-sampling, component layout and packing.

Enumerator
Unknown	= 0 The color format is not specified or unknown.
YV12	= 1 Planar Y, V, U (4:2:0) (note V,U order!)
NV12	= 2 Planar Y, merged U->V (4:2:0)
YUY2	= 3 Composite Y->U->Y->V (4:2:2)
UYVY	= 4 Composite U->Y->V->Y (4:2:2)
YUV411	= 5 Planar Y, U, V (4:1:1)
YUV420	= 6 Planar Y, U, V (4:2:0)
YUV422	= 7 Planar Y, U, V (4:2:2)
YUV444	= 8 Planar Y, U, V (4:4:4)
Y411	= 9 Composite Y, U, V (4:1:1)
Y41P	= 10 Composite Y, U, V (4:1:1)
BGR32	= 11 Composite B->G->R
BGR24	= 12 Composite B->G->R
BGR565	= 13 Composite B->G->R, 5 bit per B & R, 6 bit per G
BGR555	= 14 Composite B->G->R->A, 5 bit per component, 1 bit per A
BGR444	= 15 Composite B->G->R->A, 4 bit per component
GRAY	= 16 Luminance component only.
YUV420A	= 17 Planar Y, U, V, Alpha
YUV422A	= 18 Planar Y, U, V, Alpha
YUV444A	= 19 Planar Y, U, V, Alpha
YVU9	= 20 The vertical subsampling interval is 4. The horizontal subsampling interval is also 4 This means that a single V and a single U sample are taken for each square block of 16 image pixels. Effectively this averages 9 bits per pixel (16 pixels => 16Y + 1V + 1U => 144bits => 9bits/pixel)
BGRA32	= 21 Composite B->G->R->A

◆ DeinterlacingMethod

enum DeinterlacingMethod

Defines video deinterlacing methods.

Enumerator
NoDeinterlacing	= 0 No deinterlacing is performed. This can be used to prevent atomatic deinterlacing if it's not desired.
Duplicate	= 1 Line doubling.
Blend	= 2 Motion adaptive deinterlacing.
Median	= 3 Calculates the median of consecutive fields
EdgeDetect	= 4 Uses an edge detection filter.
MedianThreshold	= 5 Calculates the median of consecutive fields using a threshold.
CAVT	= 6 Content adaptive vertical temporal (CAVT) filtering.

◆ ErrorFacility

enum ErrorFacility

Describes the AVBlocks facilities that could generate errors.

Each facility represents either an external component or a component implemented by AVBlocks.

Often error codes will have the same value, but different meaning depending on the facility that generated the error.

Enumerator
Success	= 0 Not a facility. This is a special value that indicates a successful operation.
SystemWindows	= 1 Windows System Error
SystemMacOSStatus	= 2 MacOS Status (Mac)
SystemMacMach	= 3 Mach Error (Mac)
SystemPosix	= 4 POSIX Error (Linux, Mac)
AVBlocks	= 5 AVBlocks API error. The error code is a value from the AVBlocksError enum.
Transcoder	= 6 Transcoder error. The error code is a value from the TranscoderError enum.
Codec	= 9 Codec error. The error code is a value from the CodecError enum.

◆ H264DeblockingFilter

enum H264DeblockingFilter

Defines H.264/AVC deblocking filter mode.

The constants follow the H.264 spec for the element "disable_deblocking_filter_idc"

Enumerator

All

= 0

Deblocking filter is applied on all luma and chroma block edges of the slice.

Off

= 1

Deblocking filter is disabled for all block edges of the slice.

InSlice

= 2

Deblocking filter is applied on all luma and chroma block edges of the slice with exception of the block edges that coincide with slice boundaries.

◆ H264DirectPredMode

enum H264DirectPredMode

Defines H.264/AVC direct prediction mode.

The constants follow the H.264 spec for the element "direct_spatial_mv_pred_flag"

Enumerator

Temporal

= 0

Temporal direct mode prediction

Spatial

= 1

Spatial direct mode prediction

◆ H264EntropyCodingMode

enum H264EntropyCodingMode

Defines H.264/AVC entropy coding modes.

The constants follow the H.264 spec for the element "entropy_coding_mode_flag"

Enumerator

CAVLC

= 0

Context-Adaptive Variable-Length Coding (CAVLC)

CABAC

= 1

Context-Adaptive Binary Arithmetic Coding (CABAC)

◆ H264MeMethod

enum H264MeMethod

Defines the motion estimation methods used when encoding H.264/AVC.

Enumerator
Full	= 0 Full (slowest)
ClassicLog	= 1 TDL (Two Dimensional Logarithmic Search)
Log	= 2 Log
EPZS	= 3 EPZS (Enhanced Predictive Zonal Search)
FullOrthogonal	= 4 OSA (Full orthogonal)
LogOrthogonal	= 5 Log orthogonal
UMH	= 8 UMH (Uneven Multi-Hexagon Search)

◆ H264MeSplitMode

enum H264MeSplitMode

Defines the block sizes for which motion estimation should be done.

Used when encoding H.264/AVC.

Enumerator

Only16x16

= 0

Analyze only 16x16 blocks for motion estimation

DownTo8x8

= 1

Analyze all blocks down to 8x8 (16x16, 16x8, 8x16, 8x8)

DownTo4x4

= 2

Analyze all blocks down to 4x4 (16x16, 16x8, 8x16, 8x8, 8x4, 4x8, 4x4).

This partitioning mode is very slow.

◆ H264PicCodingType

enum H264PicCodingType

Defines the picture coding type when encoding H.264/AVC.

Enumerator

Frames

= 0

Video pictures are coded as frames (progressive video)

Fields

= 1

Video pictures are coded as fields (interlaced video)

◆ H264Profile

enum H264Profile

Defines H.264/AVC profiles.

The constants follow the H.264 spec for the element "profile_idc"

Enumerator
None	= 0 None/Auto
Baseline	= 66 Baseline profile
Main	= 77 Main profile
High	= 100 High profile
High10	= 110 High 10
High422	= 122 High 4:2:2
High444	= 144 High 4:4:4

◆ H264RateControlMethod

enum H264RateControlMethod

Defines methods for bitrate contorl when encoding H.264/AVC.

Enumerator

ABR

= 2

Average Bitrate.

Ensures that the output stream achieves a predictable long-term average bitrate.

ConstantQuant

= 3

Constant Quantization.

Encodes the video to a constant quantizer. The encoder uses the specified target quantizer, not a target bitrate. The quantizer is a measure for the amount of data loss: a higher quantizer means that more data will be lost, which results in a better compression, but also delivers worse visual quality. This method could be used when a certain level of quality is required and the final bitrate is not a concern. The bitrate is unpredictable in this mode.

◆ H265Level

enum H265Level

H.265 / HEVC Levels.

Enumerator
None	None / Auto.
L1	= 30
L2	= 60
L21	= 63
L3	= 90
L31	= 93
L4	= 120
L41	= 123
L5	= 150
L51	= 153
L52	= 156
L6	= 180
L61	= 183
L62	= 186

◆ H265Profile

enum H265Profile

H.265 / HEVC Profiles.

Enumerator
None	= 0 None/Auto
Main	= 1 Main profile
Main10	= 2 Main10 profile

◆ H265Tier

enum H265Tier

H.265 / HEVC Tiers.

Enumerator
Main	= 0
High	= 1

◆ HardwareEncoder

enum HardwareEncoder

Defines known hardware encoders.

Enumerator
Off	= 0 Hardware encoders are disabled.
Auto	= 1 The encoder is selected automatically depending on the available hardware. The order of preference is: Intel QuickSync, Nvidia NVENC, AMD VCE. If none of the known encoders are available then a software encoder is used.
AMD	= 2 AMD Video Coding Engine (VCE)
Intel	= 3 Intel QuickSync Video
Nvidia	= 4 Nvidia NVENC

◆ HwApi

enum HwApi

API for using hardware engines.

Enumerator
None	= 0 HwApi not specified
IntelMedia	= 1 Intel Media SDK
Nvenc	= 2 NVENC SDK
AmdOpenVideo	= 3 AMD OpenVideo
AmdMedia	= 4 AMF (AMD Media Framework)
MediaFoundation	= 5 Windows Media Foundation

◆ HwCodecType

enum HwCodecType

Hardware Codec type.

Enumerator

None

= 0

Hardware Codec type not specified

H264Encoder

= 1

H.264/AVC Encoder

H265Encoder

= 2

H.265/HEVC Encoder

◆ HwEngine

enum HwEngine

Hardware engine for encoding/decoding/processing.

Enumerator
None	= 0 HwEngine not specified
QuickSyncVideo	= 1 Intel Quick Sync Video
Nvenc	= 2 Nvidia NVENC
VideoCodingEngine	= 3 AMD Video Coding Engine (VCE)

◆ HwVendor

enum HwVendor

Hardware Vendor.

Enumerator
None	= 0 Hardware Vendor not specified
Intel	= 1 Intel Corporation
Nvidia	= 2 Nvidia Corporation
Amd	= 3 Advanced Micro Devices, Inc.

◆ InterpolationMethod

enum InterpolationMethod

Defines methods for sample interpolation.

Enumerator
Unknown	= 0 The interpolation method is unknown or not set.
NearestNeighbor	= 1 Nearest neighbor interpolation
Linear	= 2 Linear interpolation
Cubic	= 4 Cubic convolution interpolation
Super	= 8 Supersampling interpolation
Lanczos	= 16 Interpolation by 3-lobed Lanczos-windowed sinc function.

◆ LicenseStatusFlags

enum LicenseStatusFlags

Defines the AVBlocks license status.

When a license is set it may take some time until the license is resolved by the library.

See also: Library.SetLicense, Library.LicenseStatus

Enumerator

Ready

= 0

The licensed state is permanent. It can be changed only by calling Library.SetLicense.

The Resolved status does not imply that the library or any component is successfully licensed.

ValidationInProgress

= 1

The license is being validated and the current licensed state in AVBlocks is temporary.

DemoBuild

= 2

This is a Demo build of AVBlocks. The library cannot be licensed and always operates in Demo mode.

◆ MediaSampleFlags

enum MediaSampleFlags

Defines various media sample features.

These features are expressed as bit flags and can be combined together.

Enumerator
None	= 0x0 No feature is specified.
KeyFrame	= 0x1 The media sample / frame can be decoded on its own. It does not depend on previous or subsequent samples / frames.
Bos	= 0x2 Beginning of stream
Eos	= 0x4 End of stream

◆ MediaType

enum MediaType

Defines media types.

Enumerator
Unknown	= 0 The media type is unknown or not specified.
Audio	= 1 Audio data.
Video	= 2 Video data.
Text	= 3 Text data.
Data	= 4 Generic data.

◆ MetaPictureType

enum MetaPictureType

Picture type defined as in ID3.

Enumerator
Other	= 0 Unknown or unspecified picture type
FileIcon	= 1 32x32 pixels 'file icon' (PNG only); only one in a ID3 tag
OtherFileIcon	= 2 only one in a ID3 tag
FrontCover	= 3 Album/Disc front cover
BackCover	= 4 Album/Disc back cover
LeafletPage	= 5 Album/Disc leaflet page
Media	= 6 Printed on the media (e.g. label side of a CD)
LeadArtist	= 7 Lead artist / Lead performer / Soloist
Artist	= 8 Artist / Performer
Conductor	= 9 Conductor
Band	= 10 Band / Orchestra
Composer	= 11 Composer / Music writer
TextWriter	= 12 Lyricist / Text writer
RecordingLocation	= 13 Location where the music is recorded
DuringRecording	= 14 The picture is made during recording
DuringPerformance	= 15 The picture is made during performance
VideoCapture	= 16 Movie/video screen capture
BrightColoredFish	= 17 A brightly coloured fish :0
Illustration	= 18 Illustration
ArtistLogotype	= 19 Band / Artist logotype
PublisherLogotype	= 20 Publisher / Studio logotype

◆ PcmFlags

enum PcmFlags

Defines constants for various LPCM properties.

The constants are expressed as bit flags and can be combined together.

AudioStreamInfo.PcmFlags

Enumerator
None	= 0 No flag is set.
Unsigned	= 0x1 The audio sample should be interpreted as an unsigned integral value. The sample resolution (8-bit, 16-bit, etc.) is a separate LPCM property and is not expressed with PcmFlags. This flag is irrelevant when the Float flag is set.
Float	= 0x2 The audio sample should be interpreted as a floating point value. The sample resolution (32-bit, 64-bit, etc.) is a separate LCPM property and is not expressed with PcmFlags.
BigEndian	= 0x4 The sample value is stored in a big endian format. When this flag is not set the sample format is little endian.
NonInterleaved	= 0x8 When this flag is set audio samples from different channels are not interleaved. All samples from channel 0 are first in memory. They are followed by all samples from channel 1 and so on for all channels. When this flag is not set the samples are interleaved. The first samples from all channels are first in memory. They are followed by the second samples from all channels and so on until the last sample in time.

◆ PictureType

enum PictureType

Defines video picture types (I/P/B)

Enumerator
None	Picture type is unknown or not specified.
I	I Picture.
P	P Picture.
B	B Picture.
D	D Picture (MPEG-1 only)

◆ ScanType

enum ScanType

Defines video interlace/scan types.

Enumerator
Unknown	= 0 The interlace/scan type is not specified or not known.
Progressive	= 1 Progressive (non-interlaced) video.
TopFieldFirst	= 2 Interlaced video, where the dominant (first in time) field is the top field.
BottomFieldFirst	= 3 Interlaced video, where the dominant (first in time) field is the bottom field.

◆ StereoMode

enum StereoMode

Defines stereo mode in MPEG Audio and AAC.

Enumerator
None	= 0 None/LR mode is chosen by default.
LR	= 2 If MPEG Audio/AAC encoder is used with LR mode the encoding will be done using normal independent coding of left and right channels.
MidSide	= 3 If AAC encoder is used with mode MidSide the encoding will be done using Mid/Side coding technique. If MPEG Audio encoder is used with this mode: Layers 1 and 2: the encoding will be done using normal independent coding of left and right channels(same as LR mode) Layer 3: the encoding will be done using Mid/Side coding technique.
Joint	= 4 If AAC encoder is used with mode Joint the encoding of every frame will be done with Mid/Side or Left-Right Stereo coding technique depending on the data present in the frame. If MPEG Audio encoder is used with this mode: Layer 1: the encoding will be done using normal independent coding of left and right channels(same as LR mode). Layer 2: the encoding will use Intensity coding technique when the bit rate is lower than 96Kb/s for 2 channel setup in combination with normal independent coding of left and right channels, otherwise will use only left and right coding. Layer 3: the encoding of every frame will be done with Mid/Side or Left-Right Stereo coding technique depending on the data present in the frame.

◆ StreamSubType

enum StreamSubType

Defines audio and video stream subtypes.

Enumerator
Unknown	= 0 The stream subtype is not defined or is unknown.
None	= 65535 No stream sub type is defined.
AacAdts	= 1 Audio Data Transport Stream: AAC data in frames, similar to mp3. Somewhat compliant. Defined in Part 7 of the MPEG-2 standard (known formally as ISO/IEC 13818-7).
AacAdif	= 2 Audio Data Interchange Format: AAC data with a single header. Worst compliance. Defined in Part 7 of the MPEG-2 standard (known formally as ISO/IEC 13818-7).
AacMp4	= 3 AAC data packed in MPEG-4 container (MP4). Best compliance.
AvcC	= 4 H.264/AVC bitstream without start codes. This is how the bitstream is stored in a MPEG-4 container (MP4). Instead of start codes, each NALU is prefixed by a length field, which gives the length of the NALU in bytes. The size of the length field can vary, but is typically 1, 2, or 4 bytes. Defined in ISO 14496-15.
Avc1	Alias. Same as StreamSubType.AvcC.
MpegTsBdav	= 5 MPEG2 transport stream with valid packet time stamps.
MpegAudioLayer1	= 6 MPEG-1 Audio Layer I is commonly abbreviated to MP1. MPEG-1 Layer I is defined in ISO/IEC 11172-3. MPEG-2 Layer I is defined in the MPEG-2 Part 3 standard (known formally as ISO/IEC 13818-3).
MpegAudioLayer2	= 7 MPEG-1 Audio Layer II is commonly abbreviated to MP2. MP2 is a dominant standard for audio broadcasting. MPEG-1 Layer II is defined in ISO/IEC 11172-3. MPEG-2 Layer II is defined in the MPEG-2 Part 3 standard (known formally as ISO/IEC 13818-3).
MpegAudioLayer3	= 8 MPEG-1 Audio Layer III is commonly abbreviated to MP3. MPEG-1 Layer III is defined in ISO/IEC 11172-3. MPEG-2 Layer III is defined in the MPEG-2 Part 3 standard (known formally as ISO/IEC 13818-3).
G726PackedRFC3551	= 9 G.726 stream packed according to RFC 3551. This type of packetization is used in RTP.
G726PackedAAL2	= 10 G.726 stream packed according to ITU-T I.366.2 (AAL type 2). This type of packetization is used in Wave files.
Mpeg1System	= 11 MPEG-1 Program Stream as specified in MPEG-1 Part 1 (ISO/IEC 11172-1). This stream subtype can be used only with the StreamType.MpegPS stream type.
Mpeg2System	= 12 MPEG-2 Program Stream as specified in MPEG-2 Part 1 (ISO/IEC 13818-1). This stream subtype can be used only with the StreamType.MpegPS stream type.
AvcAnnexB	= 13 H.264 bitstream with start codes (Annex B of ITU-T Rec. H.264). H.264 bitstreams are transmitted in this format over the air, or contained in MPEG-2 program or transport streams. The H.264 bitstream is formatted as described in Annex B of ITU-T Rec. H.264. According to this specification, the bitstream consists of a sequence of NALUs (Network Abstraction Layer Units). Each NALU is prefixed with a start code equal to 0x000001 or 0x00000001.
AacRaw	= 14 Raw AAC data format: AAC data is stored without headers.

◆ StreamType

enum StreamType

Defines major audio and video stream types, and file formats (a.k.a.

containers).

Enumerator
Unknown	= 0 The stream type is not defined or is unknown.
BEGIN_AUDIO	= 0x1000 This constant marks the start of audio elementary streams. It is not a valid stream type on its own.
LPCM	= 0x1001 Audio encoded using pulse code modulation (PCM) with linear quantization.
ALawPCM	= 0x1002 A-law PCM.
MuLawPCM	= 0x1003 Mu-law PCM.
VideoDvdPCM	= 0x1004 LPCM with specific sample packing for Video-DVD.
Ac3	= 0x1005 Dolby Digital Audio (a.k.a. AC-3). AC-3 is defined in ATSC A/52-A and A/52-B.
Dts	= 0x1006 DTS (Digital Theater Systems) Coherent Acoustics codec, transportable through S/PDIF and used on DVDs, CD-DAs, LDs, and in wave files.
MpegAudio	= 0x1007 MPEG-1 or MPEG-2 Audio, Layer I, II and III.
Vorbis	= 0x1008 Vorbis Audio Codec. This is an open standard audio codec developed by the Xiph.Org Foundation.
Aac	= 0x1009 Advanced Audio Coding. Initially it was defined in Part 7 of the MPEG-2 standard (known formally as ISO/IEC 13818-7) which is now obsolete. Currently it is defined in Part 3 of the MPEG-4 standard (known formally as ISO/IEC 14496-3).
AmrNarrowBand	= 0x100A Adaptive Multi-Rate audio (Narrow Band).
AmrWideBand	= 0x100B Adaptive Multi-Rate audio (Wide Band).
G726ADPCM	= 0x100C G.726 ITU-T ADPCM.
Wma	= 0x100D Microsoft Windows Media Audio.
Wma_Professional	= 0x100E Microsoft Windows Media Audio Professional.
Wma_Lossless	= 0x100F Microsoft Windows Media Audio Lossless.
END_AUDIO	= 0x1FFF This constant marks the end of audio elementary streams. It is not a valid stream type on its own.
BEGIN_VIDEO	= 0x2000 This constant marks the start of video elementary streams. It is not a valid stream type on its own.
UncompressedVideo	= 0x2001 Uncompressed video stream.
Mpeg1Video	= 0x2002 MPEG-1 Video is defined in Part 2 of the MPEG-1 standard (known formally as ISO/IEC-11172-2).
Mpeg2Video	= 0x2003 MPEG-2 Video is defined in Part 2 of the MPEG-2 standard (known formally as ISO/IEC 13818-2 and as ITU-T H.262).
Mpeg4Video	= 0x2004 MPEG-4 Video is defined in Part 2 of the MPEG-4 standard (known formally as ISO/IEC 14496-2).
H261	= 0x2005 H.261 Video is defined in the ITU-T H.261 standard.
H263	= 0x2006 H.263 Video is defined in the ITU-T H.263 standard.
H264	= 0x2007 H.264 Video (also known as MPEG-4 AVC / Advanced Video Codec). Defined in Part 10 of the MPEG-4 standard (known formally as ISO/IEC 14496-10 and as ITU-T H.264). The actual bitstream format is determined by the stream sub-type: StreamSubType.AvcAnnexB H.264 Bitstream WITH start codes H.264 bitstreams are transmitted in this format over the air, or contained in MPEG-2 program or transport streams. The H.264 bitstream is formatted as described in Annex B of ITU-T Rec. H.264. According to this specification, the bitstream consists of a sequence of NALUs (Network Abstraction Layer Units). Each NALU is prefixed with a start code equal to 0x000001 or 0x00000001. StreamSubType.Avc1 H.264 Bitstream WITHOUT start codes H.264 bitstreams are stored in the MP4 container in this format. Instead of start codes, each NALU (Network Abstraction Layer Units) is prefixed by a length field, which gives the length of the NALU in bytes. The size of the length field can vary, but is typically 1, 2, or 4 bytes.
Avc	= 0x2007 Alias. Same as StreamType.H264.
Wmv	= 0x2008 Microsoft Windows Media Video.
Mjpeg	= 0x2009 Motion JPEG (M-JPEG).
Vc1	= 0x200A VC-1 Video is defined in the SMPTE 421M-2006 standard.
Avs	= 0x200B Advanced Video Standard (Chinese national standard)
Vp8	= 0x200C VP8 is an open video codec released by Google, originally created by On2 Technologies. VP8 is part of the WebM format.
Theora	= 0x200D Theora Video Codec. This is an open standard video codec developed by the Xiph.Org Foundation.
H265	= 0x200E H.265 Video (also known as MPEG-H HEVC / High Efficiency Video Codec ) Defined in Part 2 of the MPEG-H standard (known formally as ISO/IEC 23008-2 and as ITU-T H.265).
Hevc	= 0x200E Alias. Same as StreamType.H265.
END_VIDEO	= 0x2FFF This constant marks the end of the elementary video streams. It is not a valid stream type on its own.
BEGIN_CONTAINER	= 0x3000 This constant marks the start of file formats (a.k.a. containers). It is not a valid stream type on its own.
Avi	= 0x3001 Audio Video Interleave (AVI) multimedia container format.
Mp4	= 0x3002 MPEG-4 multimedia container format specified in Part 14 of the MPEG-4 standard (formally ISO/IEC 14496-14:2003).
Asf	= 0x3003 Advanced Systems Format (formerly Advanced Streaming Format, Active Streaming Format) (ASF).
MpegPS	= 0x3004 MPEG Program Stream.
MpegTS	= 0x3005 MPEG Transport Stream.
MpegPES	0x3006 MPEG Packetized Elementary Stream (PES).
Wave	= 0x3007 Waveform Audio file format (WAV, WAVE).
Flv	= 0x3008 Adobe Flash Video container format (FLV). This should not be confused with F4V which is a newer Flash Video container format based on ISO/IEC 14496-12 (MPEG-4 Part 12).
Ogg	= 0x3009 Open standard container format developed by the Xiph.Org Foundation.
WebM	= 0x300A Open standard container format released by Google and based on a profile of Matroska.
END_CONTAINER	= 0x3FFF This constant marks the end of audio/video containers. It is not a valid stream type on its own.
BEGIN_IMAGE	= 0x4000 This constant marks the start of image types. It is not a valid stream type on its own.
Bmp	= 0x4001 BMP image.
Png	= 0x4002 PNG image.
Jpeg	= 0x4003 JPEG image.
Tiff	= 0x4004 TIFF image.
Gif	= 0x4005 GIF image.
END_IMAGE	= 0x4FFF This constant marks the end of image types. It is not a valid stream type on its own.
BEGIN_DATA	= 0x5000 This constant marks the start of various data types. It is not a valid stream type on its own.
Teletext	= 0x5001 Teletext data.
MpegPsiPackets	= 0x5002 MPEG Transport Stream Program Specific Information
MpegTsPackets	= 0x5003 MPEG Transport Stream packets. This is not a complete transport stream but rather a subset of the complete transport stream.
END_DATA	= 0x5FFF This constant marks the end of various data types. It is not a valid stream type on its own.

◆ TranscoderError

enum TranscoderError

Defines Transcoder specific errors.

The Transcoder may also return errors like AVBlocksError, CodecError and others.

Enumerator
NoChain	= 1 The transcoder could not build a processing chain based on its inputs and outputs. Either the transcoder inputs and outputs are not configured properly or they are not compatible with each other. This error is returned by Transcoder.Open
UndefinedSocketType	= 2 The stream type of a MediaSocket is not defined. When a media socket describes a file, the stream type is deduced from the file extension. When a media socket describes a stream the stream type must be set explicitly. See StreamType. This error is returned by Transcoder.Open
UnsupportedInterlacedConversion	= 3 It is not possible to convert from progressive to interlaced video. Also it is not possible to switch interlace type from top-first to bottom-first or vice versa. This error is returned by Transcoder.Open
NoCodec	= 4 A required encoder or decoder is not available.
UnsupportedVideoConversion	= 5 It is not possible to convert from one uncompressed video format to another. See ColorFormat.
InputFull	= 6 Cannot accept more input through Transcoder.Push. Call Transcoder.Pull to obtain output samples.
BufferFull	= 6 Cannot accept more input through Transcoder.Push. Call Transcoder.Pull to obtain output samples.
InputNeeded	= 7 Cannot return output through Transcoder.Pull. Call Transcoder.Push to provide input samples.

◆ TranscoderStatus

enum TranscoderStatus

Defines the status of a transcoder operation.

It is sent with the Transcoder.OnStatus event.

See also: Transcoder.OnStatus, TranscoderStatusEventArgs

Enumerator

Completed

= 0

Transcoder.Run has completed successfully.

◆ Use

enum Use

Specifies whether particular feature should be used.

Enumerator

Off

= 0

The feature is OFF.

On

= 1

The feature is ON.

Auto

= 2

The feature usage is automatic.

Classes

Enumerations

Enumeration Type Documentation

◆ AlphaCompositingMode

◆ AudioChannelFlags

◆ AVBlocksError

◆ BitrateMode

◆ CodecError

◆ ColorFormat

◆ DeinterlacingMethod

◆ ErrorFacility

◆ H264DeblockingFilter

◆ H264DirectPredMode

◆ H264EntropyCodingMode

◆ H264MeMethod

◆ H264MeSplitMode

◆ H264PicCodingType

◆ H264Profile

◆ H264RateControlMethod

◆ H265Level

◆ H265Profile

◆ H265Tier

◆ HardwareEncoder

◆ HwApi

◆ HwCodecType

◆ HwEngine

◆ HwVendor

◆ InterpolationMethod

◆ LicenseStatusFlags

◆ MediaSampleFlags

◆ MediaType

◆ MetaPictureType

◆ PcmFlags

◆ PictureType

◆ ScanType

◆ StereoMode

◆ StreamSubType

◆ StreamType

◆ TranscoderError

◆ TranscoderStatus

◆ Use