AVEncMPVDefaultBPictureCount property
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Specifies the default number of consecutive B frames between I and P frames.
This property is read/write.
Data type
UINT32 (VT_UI4)
Property GUID
CODECAPI_AVEncMPVDefaultBPictureCount
Property value
This property has a linear range of values. To get the supported range, call ICodecAPI::GetParameterRange.
Remarks
Prior to Windows 8, this property applies to MPEG video encoders. Starting with Windows 8, this property is used by MPEG, WMV, and H.264 video encoders.
If the encoder supports this property, it can be used to control the group of pictures (GOP) structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps | UWP apps] |
| Minimum supported server |
Windows 2000 Server [desktop apps | UWP apps] |
| Header |
|