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ippStsAacMonoStereoErr
This status is tied to older or scalable AAC signaling where mono and stereo layers or mixdown flags influence how elements are interpreted.
It is not a simple “one channel versus two channels” PCM mismatch. It means the compressed stream's mode flags are inconsistent with the selected AAC object type or layer syntax.
Useful checks
- The object type, especially scalable AAC variants.
- Mono and stereo mixdown-related flags in the configuration syntax.
- Whether a modern AAC-LC decoder path is being asked to decode scalable syntax.
Intel IPP Error Reporting · ISO/IEC 14496-3 AAC standard entry · FFmpeg AAC decoder source
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