DV Video Subtypes

Article
07/27/2023

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

A number of subtypes are defined for DV video. Each has a FOURCC code and a corresponding GUID value. Not all of these formats are supported; see the Remarks section for more information.

Consumer Formats

FOURCC	GUID	Data Rate	Description
'dvsl'	MEDIASUBTYPE_dvsl	12.5 Mbps	SD-DVCR (525-60 or 625-50)
'dvsd'	MEDIASUBTYPE_dvsd	25 Mbps	SDL-DVCR (525-60 or 625-50)
'dvhd'	MEDIASUBTYPE_dvhd	50 Mbps	HD-DVCR (1125-60 or 1250-50)

Refer to IEC-61834 for more information about these formats.

Professional Formats

FOURCC	GUID	Data Rate	Description
'dv25'	MEDIASUBTYPE_dv25	25 Mbps	DVCPRO 25 (525-60 or 625-50).
'dv50'	MEDIASUBTYPE_dv50	50 Mbps	DVCPRO 50 (525-60 or 625-50)
'dvh1'	MEDIASUBTYPE_dvh1	100 Mbps	DVCPRO 100 (1080/60i, 1080/50i, or 720/60P)

Refer to SMPTE 314M for more information about dv25 and dv50, and SMPTE 370M for more information about dvh1.

Miscellaneous

Two additional DV subtypes are defined in the header file Uuids.h. These correspond to FOURCC codes that are produced by certain DV codecs; they do not correspond to any defined DV standards. These subtypes are obsolete and should not be used.

FOURCC	GUID
'DVCS'	MEDIASUBTYPE_DVCS
'DVSD'	MEDIASUBTYPE_DVSD

Remarks

The following table shows the supported data rates, in megabits per second (Mbps), for the MSDV and UVC drivers.

Operating System	MSDV (IEEE 1394) Driver	UVC Driver
Windows XP Service Pack 1 or earlier	12.5, 25	Not available
Windows XP Service Pack 2 or later, Windows Server 2003 Service Pack 1 or later.	12.5, 25, 50, 100	12.5, 25

For 25-Mbps streams, the behavior of the MSDV driver has changed in Windows Vista Prior to Windows Vista, the MSDV driver always set the media type to MEDIASUBTYPE_dvsd for 25-Mbps streams, regardless of whether the source was SDL-DVCR or DVCPRO 25. The 'dv25' media type was not used. Starting with Windows Vista, the MSDV driver now distinguishes between these two formats. For SDL-DVCR, it continues to use the 'dvsd' subtype. For DVCPRO 25, it now uses the 'dv25' subtype.

The DirectShow DV Splitter and DV Video Decoder filters support SDL-DVCR formats only. The data can be PAL or NTSC. Third-party filters or codecs may be available that can parse other DV formats, as long as the data rate is supported by the MSDV or UVC driver.

Requirements

Requirement	Value
Header	Dshow.h