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IAMVideoCompression::get_Quality (Compact 2013)

  • Article

3/26/2014

This method retrieves the current compression quality.

Syntax

HRESULT get_Quality(
  double* pQuality
);

Parameters

  • pQuality
    [out] Pointer to a double variable that receives the relative compression quality. The quality is expressed as a value between 0.0 and 1.0, where 1.0 indicates the best quality and 0.0 indicates the worst quality. If the value is negative, the filter will use the default quality.

Return Value

Returns an HRESULT value.

Remarks

The exact meaning of the quality setting depends on the filter.

To determine if the filter supports this method, call the IAMVideoCompression::GetInfo method and check for the CompressionCaps_CanQuality flag (see CompressionCaps) in the pCapabilities parameter. The GetInfo method also returns the default quality.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

IAMVideoCompression Interface
IAMVideoCompression::put_Quality
IAMVideoCompression::GetInfo
CompressionCaps