CompressionCaps (Compact 2013)

Article
01/31/2017

3/26/2014

Indicates video compression capabilities.

Syntax

typedef enum {
  CompressionCaps_CanQuality  = 0x01,
  CompressionCaps_CanCrunch   = 0x02,
  CompressionCaps_CanKeyFrame = 0x04,
  CompressionCaps_CanBFrame   = 0x08,
  CompressionCaps_CanWindow   = 0x10
} CompressionCaps;

Elements

CompressionCaps_CanQuality
Video compressor supports the IAMVideoCompression::put_Quality and IAMVideoCompression::get_Quality methods.

CompressionCaps_CanCrunch
Video compressor can compress video to a specified data rate. If the compressor has this capability then the output pins media type will contain the data rate in the VIDEOINFOHEADER structure's dwBitRate member. The only way to set the data rate is to set dwBitRate.

CompressionCaps_CanKeyFrame
Video compressor supports the IAMVideoCompression::put_KeyFrameRate and IAMVideoCompression::get_KeyFrameRate methods.

CompressionCaps_CanBFrame
Video compressor supports the IAMVideoCompression::put_PFramesPerKeyFrame and IAMVideoCompression::get_PFramesPerKeyFrame methods.

CompressionCaps_CanWindow
Video compressor supports the IAMVideoCompression::put_WindowSize and IAMVideoCompression::get_WindowSize methods.

Remarks

DirectShow applications and DirectShow filters have different include file and link library requirements.

Requirements

Header	dshow.h
Library	Strmiids.lib

See Also

Reference

DirectShow Enumerations
IAMVideoCompression::put_Quality
IAMVideoCompression::get_Quality
VIDEOINFOHEADER
IAMVideoCompression::put_KeyFrameRate
IAMVideoCompression::get_KeyFrameRate
IAMVideoCompression::put_PFramesPerKeyFrame
IAMVideoCompression::get_PFramesPerKeyFrame
IAMVideoCompression::put_WindowSize
IAMVideoCompression::get_WindowSize