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VBICodec Filter

This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.

The VBICodec filter slices raw digitized data from the vertical blanking interval (VBI). Connect the input pin of this filter to VBI Out pin of an analog television capture filter. The filter has several output pins for the various VBI data services. Which output pins produce data depends on the input video standard.

VBI Service Video Standard
TeletextPAL
Wide screen signalling (WSS)PAL, NTSC(J)
Video program service (VPS)PAL
Closed captioning (CC)NTSC

 

Pin Data

Pin Major Type Subtype
InputMEDIATYPE_VBIKSDATAFORMAT_SUBTYPE_RAW8
Teletext OutputMEDIATYPE_VBIMEDIASUBTYPE_TELETEXT
WSS OutputMEDIATYPE_VBIMEDIASUBTYPE_WSS
VPS OutputMEDIATYPE_VBIMEDIASUBTYPE_VPS
CC Output (1)MEDIATYPE_AUXLine21DataMEDIASUBTYPE_Line21_BytePair
CC Output (2)MEDIATYPE_AUXLine21DataMEDIASUBTYPE_Line21_BytePair

 

Filter Data

Property Value
Filter CLSIDCLSID_CCAFilter
MeritMERIT_NORMAL
Filter CategoryAM_KSCATEGORY_VBICODEC_MI ("Multi-Instance Capable VBI Codecs")

 

The closed captioning output pins expose the ICCSubStreamFiltering interface, which can be used to filter the closed captioning services.

In Windows Vista and later, this filter replaces the CC Decoder filter and the WST Codec filter.

Related topics

BDA Filters
Line 21 Media Types
VBI Media Types

 

 

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Build date: 10/27/2012

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