CODECAPI_AVEncSliceControlMode property

Makale
01/07/2021

Specifies the slice control mode. Valid values are 0, 1, and 2.

Data type

ULONG (VT_UI4)

Property GUID

CODECAPI_AVEncSliceControlMode

Property value

Slice control mode values:

Value	Meaning
0	Setting this value to 0 indicates that the CODECAPI_AVEncSliceControlSize property will specify the slice size in units of macroblocks per slice.
1	Setting this value to 1 indicates that the CODECAPI_AVEncSliceControlSize property will specify the slice size in units of bits per slice.
2	Setting this value to 2 indicates that the CODECAPI_AVEncSliceControlSize property will specify the slice size in units of macroblock rows per slice.

The encoder returns the values that it supports.

Remarks

H.264/AVC encoders:

It is recommended that the encoder supports GetValue, SetValue, and GetParameterRange.

If SetValue is not called for CODECAPI_AVEncSliceControlMode, GetValue for CODECAPI_AVEncSliceControlMode can return VFW_E_CODECAPI_NO_CURRENT_VALUE. GetDefaultValue may return VFW_E_CODECAPI_NO_DEFAULT for CODECAPI_AVEncSliceControlMode.

Recommended default value is 2 (size in MB row per slice).

This is a static API, which means the application won t change this while the encoder is running.

Examples

if (pCodecAPI->IsSupported(&CODECAPI_AVEncSliceControlMode) == S_OK) {                
     VARIANT var;
     var.vt = VT_UI4;
     var.ulVal =ulSliceMode;
     pCodecAPI->SetValue(&CODECAPI_AVEncSliceControlMode, &var);
}

Requirements

Requirement	Value
Minimum supported client	Windows 8.1 [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2012 R2 [desktop apps \| UWP apps]
Header	Codecapi.h

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