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MFPKEY_ASFMediaSource_ApproxSeek property

  • Article

Specifies whether the ASF media source uses approximate seeking.

Data type

PROPVARIANT type (vt)

PROPVARIANT member

VARIANT_BOOL

VT_BOOL

boolVal

Remarks

Applications can use this property to configure the ASF media source. To set the property, pass an IPropertyStore pointer to the source resolver. For more information, see Configuring a Media Source.

The ASF media source handles seeking as follows:

  • If the value of this property is VARIANT_TRUE, the media source uses approximate seeking, which is less accurate but faster than exact seeking.

  • If the value is VARIANT_FALSE and the ASF file has an index, the media source uses exact seeking.

  • If the ASF file does not contain an index, the media source uses approximate seeking unless the MFPKEY_ASFMediaSource_IterativeSeekIfNoIndex property is set to VARIANT_TRUE.

  • If the ASF file does not contain an index and the MFPKEY_ASFMediaSource_IterativeSeekIfNoIndex property is VARIANT_TRUE, the media source uses iterative seeking. Iterative seeking is more accurate but slower than approximate seeking (but generally less accurate than exact seeking).

    Note

    Requires Windows 7.

     

The default value of this property is VARIANT_FALSE.

Requirements

Requirement Value
Minimum supported client
 Windows Vista [desktop apps only]
Minimum supported server
 Windows Server 2008 [desktop apps only]
Header
Mfidl.h

See also

Media Foundation Properties