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ippStsMP4FcodeErr
The fcode field defines the permitted motion-vector range and how vector residual bits are interpreted. An invalid fcode makes later motion-vector decoding ambiguous.
This is a header-level or VOP-level problem. If it appears after a random access point, confirm that the decoder has the required VOL and VOP headers, not only raw macroblock data.
Check these details
- The VOL/VOP header that supplied fcode.
- The VOP type; B-VOP and P-VOP handling differ.
- Container demuxing that may have dropped configuration headers.
Intel IPP Error Reporting · MPEG-4 Visual format summary · FFmpeg MPEG-4 Visual decoder
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