Intel IPP status -159 (ippStsAacGainCtrErr): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The IPP AAC gain-control status means the stream requests unsupported gain-control syntax.

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ippStsAacPlsDataErr	ippStsAacSectErr

ippStsAacGainCtrErr

Gain control is an AAC tool associated with scalable or SSR-style syntax. Many AAC-LC decoding paths do not implement it, and an IPP caller can receive this status when the stream selects a tool outside the supported subset.

Do not treat it as a volume or PCM gain problem. The failure is in compressed bitstream syntax and profile support before normal sample output is produced.

Check first

The audio object type signaled by AudioSpecificConfig.
Whether the stream claims AAC-LC but contains scalable or SSR-only tools.
The decoder path selected by the application wrapper.

Intel IPP Error Reporting · ISO/IEC 14496-3 AAC standard entry · FFmpeg AAC decoder source

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