[libav-bugs] [Bug 271] New: AAC decoder generates incompatible channel layout / channel count

bugzilla-daemon at aruru.libav.org bugzilla-daemon at aruru.libav.org
Tue Apr 17 19:47:13 CEST 2012


http://bugzilla.libav.org/show_bug.cgi?id=271

           Summary: AAC decoder generates incompatible channel layout /
                    channel count
           Product: Libav
           Version: git HEAD
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: libavcodec
        AssignedTo: bugzilla at libav.org
        ReportedBy: justin.ruggles at gmail.com


Somehow the decoder detecting either an incorrect channel count or an incorrect
channel layout.  For example, the file:
http://fate-suite.libav.org/aac/CT_DecoderCheck/sbr_i-ps_i.aac

During decoding of this file, the decoder tries to change the configuration
many times to "2-channels (FC)" which is obviously invalid. I'm not sure if the
file is bad or if our output configuration handling is bad.

I'm sending a patch to detect and validate such changes in avconv since it will
royally screw up mixing in libavresample. But we still need to determine
whether it's a bad file or if it's a decoder bug.

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