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ippStsMP4AlignErr
This status is about the memory contract of the IPP video primitive. Optimized MPEG-4 routines may require buffers or structures to be aligned even when the compressed stream itself is valid.
Treat it separately from bitstream syntax errors. The fix is usually in allocation, pitch calculation or sub-buffer addressing, not in changing the encoded video.
Check these details
- Input and output pointer alignment at the IPP call boundary.
- Pitch values and offsets used for cropped or padded planes.
- Whether a wrapper passes a pointer into the middle of an aligned allocation.
Intel IPP Error Reporting · MPEG-4 Visual format summary · FFmpeg MPEG-4 Visual decoder
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