MFPKEY_BUFFERFULLNESSINFIRSTBYTE Property

Specifies whether the encoded video bit stream contains a buffer fullness value with every key frame.

Constant for IPropertyBag

g_wszWMVCBufferFullnessInFirstByte

Data Type

VT_BOOL

Remarks

You must set an output type before getting this value.

You can get the value of this property using IWMCodecProps::GetCodecProp. If you use IPropertyBag, you must first set the FOURCC value of the desired compressed format with the MFPKEY_FOURCC property.

Having the buffer fullness in the first byte of all key frames enables you to determine the buffer size required when concatenating compressed video streams.

Requirements

Minimum supported client
Windows XP [desktop apps only]
Minimum supported server
Windows Server 2003 [desktop apps only]
Header
Wmcodecdsp.h

See also

Media Foundation Properties