COM Objects > WMA object > Methods > EncodeFormats.WMA.GetEncodingVBRQualityEx method

Remarks

Retrieves a specific encoding quality (for Variable Bit Rate support) supported by Windows Media components for a given frequency and number of channels.

The number of available bitrates can be obtained using the EncodeFormats.WMA.GetEncodingVBRQualitiesCountEx method.

For further details about encoding in WMA format refer to the WMA object section.

For further information about available encoding formats see the EncodeFormats object.

Syntax

[Visual Basic]

control.EncodeFormats.WMA.GetEncodingVBRQualityEx (

nFrequency as Long,

nChannels as Integer,

nQualityIndex as Integer

) as long

[C++]

long control.EncodeFormats.WMA.GetEncodingVBRQualityEx (

long nFrequency,

short nChannels,

short nQualityIndex

);

Parameter	Description

nFrequency	Frequency expressed in Hertz (e.g. 44100)
nChannels	Number of channels: 1 for Mono, 2 for Stereo. Multi-channel is not supported.
nQualityIndex	Number representing the zero-based index of the bitrate quality

Return value

Value	Meaning

Negative value	An error occurred. Check the LastError property value in order to see the last error.
> 0	The requested encoding Variable Bit Rate quality: the range of supported values is from 0 to 100.