Media Types


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Media Types

Microsoft® DirectShow™ uses the AM_MEDIA_TYPE structure to describe media samples. This structure includes GUID fields for major type, subtype, and format type, as well as fields specifying other sample features, such as whether the samples are compressed. This article summarizes the major type and subtype options registered by DirectShow. These media types are defined in Uuids.h.
Media Types with No Subtype
Audio Media Types
Line21 Media Types
MPEG2 Media Types
Stream Media Types
Video Media Types
Analog Video Media Types

Media Types with No Subtype
The following table describes the media types with no subtype.

MEDIATYPEs with no MEDIASUBTYPEs

MEDIATYPE_AnalogAudio Analog audio connection

MEDIATYPE_File Media type is a file, used closed captions.

MEDIATYPE_Interleaved Data is interleaved, used by Digital Video (DV).

MEDIATYPE_Midi Data is MIDI format.

MEDIATYPE_ScriptCommand Data is a script command, used by closed captions.

MEDIATYPE_Text Data is text.

MEDIATYPE_Timecode Data is timecode data.

Audio Media Types
The wFormatTag field in the WAVEFORMATEX structure specifies the audio format type. The format type is generally FORMAT_WaveFormatEx. Media samples are generally whole number of samples as specified in the wBitsPerSample field in the WAVEFORMATEX structure. This is not necessarily true for MPEG audio samples that can come from packetized streams and are therefore not necessarily packaged on sample / frame boundaries. For MPEG audio the time stamp in a media sample is the time stamp for the first frame whose first byte is contained in the media sample.
Media subtypes are defined for each wFormatTag as follows:
The Data1 subfield of the Media Subtype is the same as the wFormatTag value.
The Data 2 field is 0.
The Data 3 field is 0x0010.
The Data 4 field is 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71.

Thus, for PCM audio the subtype GUID would be:
{00000001-0000-0010-8000-00AA00389B71}
Older filters may still use GUID_NULL as the subtype so this should be checked for. However, registration of a filter with the explicit subtype greatly improves the speed of graph loading, especially when the given filter is not required. The CreateAudioMediaType function supplied in the DirectShow SDK can be used to create an AM_MEDIA_TYPE structure from a WAVEFORMATEX Structure.
The following table describes the audio media subtypes.

MEDIATYPE_Audio Data is audio

MEDIASUBTYPE_PCMAudio PCM audio

MEDIASUBTYPE_MPEG1Packet MPEG1 Audio packet

MEDIASUBTYPE_MPEG1Payload MPEG1 Audio Payload

Line21 Media Types
The following table describes the Line21 closed captioning media subtypes.

MEDIATYPE_AUXLine21Data Data is Line21 type, used by closed captions

MEDIASUBTYPE_Line21_BytePair Line21 data as byte pairs

MEDIASUBTYPE_Line21_GOPPacket Line21 data in DVD GOP Packet

MEDIASUBTYPE_Line21_VBIRawData Line21 data in raw VBI format

MPEG2 Media Types
The following table describes the MPEG2 media subtypes.

MEDIATYPE_MPEG2_PES Data is MPEG2 format, used by DVD

MEDIASUBTYPE_DVD_SUBPICTURE Subpicture data

MEDIASUBTYPE_DOLBY_AC3 Dolby data

MEDIASUBTYPE_MPEG2_AUDIO MPEG2 audio data

MEDIASUBTYPE_DVD_LPCM_AUDIO DVD audio data

Stream Media Types
Time stamps are byte positions * 10000000 (notionally 1 byte per second) rather than real times.
The following table describes the stream media subtypes.

MEDIATYPE_Stream Data is a non-timestamped byte stream

MEDIASUBTYPE_Avi Data from AVI file

MEDIASUBTYPE_WAVE Data from WAV file

MEDIASUBTYPE_AU Data from AU file

MEDIASUBTYPE_AIFF Data from AIFF file

MEDIASUBTYPE_MPEG1Video MPEG video

MEDIASUBTYPE_MPEG1System MPEG system

MEDIASUBTYPE_MPEG1VideoCD MPEG video CD

MEDIASUBTYPE_MPEG1Audio MPEG audio

MEDIASUBTYPE_DssVideo Dss Video

MEDIASUBTYPE_DssAudio Dss Audio

Video Media Types
The following table describes the video media subtypes.

MEDIATYPE_Video Data is video

MEDIASUBTYPE_YVU9 Standard YVU9 format uncompressed data. A planar YUV format. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; a Y sample on every vertical line, a U and V sample at every fourth vertical line. 9 bits per pixel.

MEDIASUBTYPE_Y411 YUV 411 format data. Same as Y41P.

MEDIASUBTYPE_Y41P Y41P format data. A packed YUV format. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled. Byte ordering (lowest first) is U0, Y0, V0, Y1, U4, Y2, V4, Y3, Y4, Y5, Y6, Y7, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 12-byte block is 8 image pixels.

MEDIASUBTYPE_YUY2 YUY2 format data. Same as UYVY but with different pixel ordering. Byte ordering (lowest first) is Y0, U0, Y1, V0, Y2, U2, Y3, V2, Y4, U4, Y5, V4, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.

MEDIASUBTYPE_YVYU YVYU format data. A packed YUV format. Same as UYVY but with different pixel ordering. Byte ordering (lowest first) is Y0, V0, Y1, U0, Y2, V2, Y3, U2, Y4, V4, Y5, U4, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.

MEDIASUBTYPE_UYVY UYVY format data. A packed YUV format. A Y sample at every pixel, a U and V sample at every second pixel horizontally on each line; every vertical line sampled. Probably the most popular of the various YUV 4:2:2 formats. Byte ordering (lowest first) is U0, Y0, V0, Y1, U2, Y2, V2, Y3, U4, Y4, V4, Y5, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.

MEDIASUBTYPE_Y211 YUV 211 format data. A packed YUV format. A Y sample at every second pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled. Byte ordering (lowest first) is Y0, U0, Y2, V0, Y4, U4, Y6, V4, Y8, U8, Y10, V8, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 4 image pixels.

MEDIASUBTYPE_CLJR Cirrus Logic Jr YUV 411 format with less than 8 bits per Y, U, and V sample. Cinepak can produce it and Cirrus 5440 can produce an overlay with it. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled.

MEDIASUBTYPE_IF09 Indeo produced YVU9 format with additional information about differences from the last frame. 9.5 bits per pixel but reported as 9.

MEDIASUBTYPE_CPLA Cinepak UYVY format.

MEDIASUBTYPE_MJPG Motion JPEG (MJPG) compressed video.

MEDIASUBTYPE_TVMJ TrueVision MJPG format.

MEDIASUBTYPE_WAKE MJPG format produced by some cards.

MEDIASUBTYPE_CFCC MJPG format produced by some cards.

MEDIASUBTYPE_IJPG Intergraph JPEG format.

MEDIASUBTYPE_Plum Plum MJPG format.

MEDIASUBTYPE_RGB1 RGB 1 bit per pixel. Palettized.

MEDIASUBTYPE_RGB4 RGB 4 bits per pixel. Palettized.

MEDIASUBTYPE_RGB8 RGB 8 bits per pixel. Palettized.

MEDIASUBTYPE_RGB565 565 format of RGB, 16 bits per pixel. Uncompressed RGB samples.

MEDIASUBTYPE_RGB555 555 format of RGB, 16 bits per pixel. Uncompressed RGB samples.

MEDIASUBTYPE_RGB24 RGB 24 bits per pixel. Uncompressed RGB samples.

MEDIASUBTYPE_RGB32 RGB 32 bits per pixel. Uncompressed RGB samples.

MEDIASUBTYPE_Overlay Video delivered using hardware overlay.

MEDIASUBTYPE_QTMovie QT Specific compressions.

MEDIASUBTYPE_QTRpza QT RPZA compressed data.

MEDIASUBTYPE_QTSmc QT SMC compressed data.

MEDIASUBTYPE_QTRle QT RLE compressed data.

MEDIASUBTYPE_QTJpeg QT JPEG compressed data.

MEDIASUBTYPE_dvsd Standard DV format.

MEDIASUBTYPE_dvhd High Definition DV format.

MEDIASUBTYPE_dvsl Long Play DV format.

MEDIASUBTYPE_MPEG1Packet MPEG1 Video Packet.

MEDIASUBTYPE_MPEG1Payload MPEG1 Video Payload.

MEDIASUBTYPE_VideoPort Data is video port data, used with DVD.

Analog Video Media Types
The following analog video formats were introduced in ActiveMovie™ 1.0 but are currently not used. Instead, the IAMAnalogVideoDecoder, IAMAnalogVideoEncoder and IAMTVTuner interfaces use an enumeration called AnalogVideoStandard defined in Axextend.idl.
The following table describes the analog video media subtypes.

MEDIATYPE_AnalogVideo — Data is various formats of analog video, including standard NTSC, PAL, and SECAM formats.

MEDIASUBTYPE_AnalogVideo_NTSC_M

MEDIASUBTYPE_AnalogVideo_PAL_B

MEDIASUBTYPE_AnalogVideo_PAL_D

MEDIASUBTYPE_AnalogVideo_PAL_G

MEDIASUBTYPE_AnalogVideo_PAL_H

MEDIASUBTYPE_AnalogVideo_PAL_I

MEDIASUBTYPE_AnalogVideo_PAL_M

MEDIASUBTYPE_AnalogVideo_PAL_N

MEDIASUBTYPE_AnalogVideo_SECAM_B

MEDIASUBTYPE_AnalogVideo_SECAM_D

MEDIASUBTYPE_AnalogVideo_SECAM_G

MEDIASUBTYPE_AnalogVideo_SECAM_H

MEDIASUBTYPE_AnalogVideo_SECAM_K

MEDIASUBTYPE_AnalogVideo_SECAM_K1

MEDIASUBTYPE_AnalogVideo_SECAM_L

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MEDIATYPEs with no MEDIASUBTYPEs
MEDIATYPE_AnalogAudio	Analog audio connection
MEDIATYPE_File	Media type is a file, used closed captions.
MEDIATYPE_Interleaved	Data is interleaved, used by Digital Video (DV).
MEDIATYPE_Midi	Data is MIDI format.
MEDIATYPE_ScriptCommand	Data is a script command, used by closed captions.
MEDIATYPE_Text	Data is text.
MEDIATYPE_Timecode	Data is timecode data.

MEDIATYPE_Audio	Data is audio
MEDIASUBTYPE_PCMAudio	PCM audio
MEDIASUBTYPE_MPEG1Packet	MPEG1 Audio packet
MEDIASUBTYPE_MPEG1Payload	MPEG1 Audio Payload

MEDIATYPE_AUXLine21Data	Data is Line21 type, used by closed captions
MEDIASUBTYPE_Line21_BytePair	Line21 data as byte pairs
MEDIASUBTYPE_Line21_GOPPacket	Line21 data in DVD GOP Packet
MEDIASUBTYPE_Line21_VBIRawData	Line21 data in raw VBI format

MEDIATYPE_MPEG2_PES	Data is MPEG2 format, used by DVD
MEDIASUBTYPE_DVD_SUBPICTURE	Subpicture data
MEDIASUBTYPE_DOLBY_AC3	Dolby data
MEDIASUBTYPE_MPEG2_AUDIO	MPEG2 audio data
MEDIASUBTYPE_DVD_LPCM_AUDIO	DVD audio data

MEDIATYPE_Stream	Data is a non-timestamped byte stream
MEDIASUBTYPE_Avi	Data from AVI file
MEDIASUBTYPE_WAVE	Data from WAV file
MEDIASUBTYPE_AU	Data from AU file
MEDIASUBTYPE_AIFF	Data from AIFF file
MEDIASUBTYPE_MPEG1Video	MPEG video
MEDIASUBTYPE_MPEG1System	MPEG system
MEDIASUBTYPE_MPEG1VideoCD	MPEG video CD
MEDIASUBTYPE_MPEG1Audio	MPEG audio
MEDIASUBTYPE_DssVideo	Dss Video
MEDIASUBTYPE_DssAudio	Dss Audio

MEDIATYPE_Video	Data is video
MEDIASUBTYPE_YVU9	Standard YVU9 format uncompressed data. A planar YUV format. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; a Y sample on every vertical line, a U and V sample at every fourth vertical line. 9 bits per pixel.
MEDIASUBTYPE_Y411	YUV 411 format data. Same as Y41P.
MEDIASUBTYPE_Y41P	Y41P format data. A packed YUV format. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled. Byte ordering (lowest first) is U0, Y0, V0, Y1, U4, Y2, V4, Y3, Y4, Y5, Y6, Y7, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 12-byte block is 8 image pixels.
MEDIASUBTYPE_YUY2	YUY2 format data. Same as UYVY but with different pixel ordering. Byte ordering (lowest first) is Y0, U0, Y1, V0, Y2, U2, Y3, V2, Y4, U4, Y5, V4, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.
MEDIASUBTYPE_YVYU	YVYU format data. A packed YUV format. Same as UYVY but with different pixel ordering. Byte ordering (lowest first) is Y0, V0, Y1, U0, Y2, V2, Y3, U2, Y4, V4, Y5, U4, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.
MEDIASUBTYPE_UYVY	UYVY format data. A packed YUV format. A Y sample at every pixel, a U and V sample at every second pixel horizontally on each line; every vertical line sampled. Probably the most popular of the various YUV 4:2:2 formats. Byte ordering (lowest first) is U0, Y0, V0, Y1, U2, Y2, V2, Y3, U4, Y4, V4, Y5, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 2 image pixels.
MEDIASUBTYPE_Y211	YUV 211 format data. A packed YUV format. A Y sample at every second pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled. Byte ordering (lowest first) is Y0, U0, Y2, V0, Y4, U4, Y6, V4, Y8, U8, Y10, V8, where the suffix 0 is the leftmost pixel and increasing numbers are pixels increasing left to right. Each 4-byte block is 4 image pixels.
MEDIASUBTYPE_CLJR	Cirrus Logic Jr YUV 411 format with less than 8 bits per Y, U, and V sample. Cinepak can produce it and Cirrus 5440 can produce an overlay with it. A Y sample at every pixel, a U and V sample at every fourth pixel horizontally on each line; every vertical line sampled.
MEDIASUBTYPE_IF09	Indeo produced YVU9 format with additional information about differences from the last frame. 9.5 bits per pixel but reported as 9.
MEDIASUBTYPE_CPLA	Cinepak UYVY format.
MEDIASUBTYPE_MJPG	Motion JPEG (MJPG) compressed video.
MEDIASUBTYPE_TVMJ	TrueVision MJPG format.
MEDIASUBTYPE_WAKE	MJPG format produced by some cards.
MEDIASUBTYPE_CFCC	MJPG format produced by some cards.
MEDIASUBTYPE_IJPG	Intergraph JPEG format.
MEDIASUBTYPE_Plum	Plum MJPG format.
MEDIASUBTYPE_RGB1	RGB 1 bit per pixel. Palettized.
MEDIASUBTYPE_RGB4	RGB 4 bits per pixel. Palettized.
MEDIASUBTYPE_RGB8	RGB 8 bits per pixel. Palettized.
MEDIASUBTYPE_RGB565	565 format of RGB, 16 bits per pixel. Uncompressed RGB samples.
MEDIASUBTYPE_RGB555	555 format of RGB, 16 bits per pixel. Uncompressed RGB samples.
MEDIASUBTYPE_RGB24	RGB 24 bits per pixel. Uncompressed RGB samples.
MEDIASUBTYPE_RGB32	RGB 32 bits per pixel. Uncompressed RGB samples.
MEDIASUBTYPE_Overlay	Video delivered using hardware overlay.
MEDIASUBTYPE_QTMovie	QT Specific compressions.
MEDIASUBTYPE_QTRpza	QT RPZA compressed data.
MEDIASUBTYPE_QTSmc	QT SMC compressed data.
MEDIASUBTYPE_QTRle	QT RLE compressed data.
MEDIASUBTYPE_QTJpeg	QT JPEG compressed data.
MEDIASUBTYPE_dvsd	Standard DV format.
MEDIASUBTYPE_dvhd	High Definition DV format.
MEDIASUBTYPE_dvsl	Long Play DV format.
MEDIASUBTYPE_MPEG1Packet	MPEG1 Video Packet.
MEDIASUBTYPE_MPEG1Payload	MPEG1 Video Payload.
MEDIASUBTYPE_VideoPort	Data is video port data, used with DVD.