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ippStsH263ExpandPelsErr
Some H.263 operations need border expansion around reference pictures for motion compensation. The expansion area must be large enough for the supported motion-vector reach.
This is a reference-frame buffer setup error, not a VLC or coefficient error.
Check these details for ippStsH263ExpandPelsErr
- The number of padded pixels around the reference frame.
- Motion-compensation options that increase border requirements.
- Whether the reference buffer was allocated for display size only.
For ippStsH263ExpandPelsErr, Intel IPP Error Reporting · ITU-T H.263 recommendation · FFmpeg H.263 decoder
Interpreting ippStsH263ExpandPelsErr
ippStsH263ExpandPelsErr is Intel IPP status -78. AllStat describes it as “Expand pixels number is less than 8.”. For ippStsH263ExpandPelsErr, the decisive context is the exact IPP routine and overload, because status names are shared across image, signal, codec, cryptography, and data-compression domains with different parameter contracts.
Developer checks for ippStsH263ExpandPelsErr
- Record the full function name, library version and CPU dispatch, source and destination types, ROI or vector length, step values, scale factor, and every state/specification object passed to the call.
- Validate the ippstsh263expandpelserr parameter group before changing buffers: initialization routines often establish constraints inherited by later processing calls.
- For ippStsH263ExpandPelsErr, use ippGetStatusString for logging but branch on the numeric IppStatus value; localized or wrapper text is not a stable program contract.
Retrying ippStsH263ExpandPelsErr with unchanged arguments normally reproduces the same validation failure. For ippStsH263ExpandPelsErr, rebuild the affected IPP state when configuration changed, verify buffer bounds and alignment, and isolate the smallest call that still returns the status.
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