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ippStsMP4BlockIdxErr
A macroblock has a fixed set of luminance and chrominance blocks. This status means the IPP call received or decoded a block index outside the set expected for the current component layout.
Do not diagnose it as a color-conversion problem first. It is usually a wrong macroblock loop, a damaged coded block pattern, or an application passing the wrong block number into a lower-level primitive.
Check these details
- The component format and number of blocks per macroblock.
- The coded block pattern that selected the block.
- Caller-side loops that reuse an index after changing chroma format.
Intel IPP Error Reporting · MPEG-4 Visual format summary · FFmpeg MPEG-4 Visual decoder
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