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Specifies the actual quality level for quality based (1-pass) variable-bit-rate (VBR) encoding.
Constant for IPropertyBag
g_wszWMVCVBRQuality, g_wszWMCPAudioVBRQuality
Data Type
VT_I4
Remarks
Not all of the values in the range have a unique meaning. The values that represent a step up in quality from the previous level are: 1, 4, 8, 11, 15, 18, 22, 25, 29, 33, 36, 40, 43, 47, 50, 54, 58, 61, 65, 68, 72, 75, 79, 83, 86, 90, 93, 97, and 100.
For audio encoder objects, the quality modes are provided in the WAVEFORMATEX structure of the output types that you retrieve using the IMediaObject::GetOutputType.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|
See also