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ippStsMBStepErr
This status belongs to macroblock-based video primitives. A macroblock operation needs a row step large enough for a 16-sample luma block, plus the codec-specific chroma layout used by the function.
If the step is too small, motion compensation or transform reconstruction could read rows as if they overlapped.
Diagnostic focus
- Check the luma and chroma plane steps used for the macroblock operation.
- Verify that cropped or padded frame views still expose a full macroblock region.
- Do not confuse macroblock step with frame width; the step describes memory stride.
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