Classes > EncodeWMA class > 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 EncodeWMA class section.

For further information about available encoding formats see the EncodeFormatsMan class.

Syntax

[Visual Basic]

Public Function GetEncodingVBRQualityEx (

nFrequency as Int32,

nChannels as Int16,

nQualityIndex as Int16

) as Int32

[C#]

public Int32 GetEncodingVBRQualityEx (

Int32 nFrequency,

Int16 nChannels,

Int16 nQualityIndex

);

[C++]

public: Int32 GetEncodingVBRQualityEx (

Int32 nFrequency,

Int16 nChannels,

Int16 nQualityIndex

);

Parameter	Description

nFrequency	Frequency expressed in Hertz (e.g. 44100)
nChannels	Number of channels: 1 for Mono, 2 for Stereo
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.