MF_MT_H264_MAX_MB_PER_SEC attribute
Specifies the maximum macroblock processing rate for an H.264 video stream.
Data type
UINT32[] stored as UINT8[]
Applies to
Remarks
This attribute applies to media types for H.264 streams transmitted over USB. The value of the attribute is an array of UINT32 values, which correspond to the following fields in the UVC 1.5 H.264 video format descriptor.
| Array Element | Descriptor Field |
|---|---|
| 0 | dwMaxMBperSecOneResolutionNoScalability |
| 1 | dwMaxMBperSecTwoResolutionsNoScalability |
| 2 | dwMaxMBperSecThreeResolutionsNoScalability |
| 3 | dwMaxMBperSecFourResolutionsNoScalability |
| 4 | dwMaxMBperSecOneResolutionTemporalScalability |
| 5 | dwMaxMBperSecTwoResolutionsTemporalScalablility |
| 6 | dwMaxMBperSecThreeResolutionsTemporalScalability |
| 7 | dwMaxMBperSecFourResolutionsTemporalScalability |
| 8 | dwMaxMBperSecOneResolutionTemporalQualityScalability |
| 9 | dwMaxMBperSecTwoResolutionsTemporalQualityScalability |
| 10 | dwMaxMBperSecThreeResolutionsTemporalQualityScalablity |
| 11 | dwMaxMBperSecFourResolutionsTemporalQualityScalability |
| 12 | dwMaxMBperSecOneResolutionFullScalability |
| 13 | dwMaxMBperSecTwoResolutionsFullScalability |
| 14 | dwMaxMBperSecThreeResolutionsFullScalability |
| 15 | dwMaxMBperSecFourResolutionsFullScalability |
This attribute is also used with H.264 UVC 1.5 camera encoders.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 8 [desktop apps | UWP apps] |
| Minimum supported server |
Windows Server 2012 [desktop apps | UWP apps] |
| Header |
|
See also