[M4IF Technotes] help

[Ralph Sperschneider]

Dear Harisha,
harisha wrote:
> Hi
> 
>  
> 
> We recently purchased ISO reference software for MPEG -4,14496.and I am 
> working with audio part.But the Ref.code is unable decode the bitstream 
> supplied by ISO
I wonder that only a single bitstream was supplied by ISO. I guess that it was 
not part of the reference software. Maby you can identify this stream and inform 
us about its source (e.g. an ftp site or the annex of 14496-4:2000).
> It fails in
> 
>  
> 
> MP4Audio_LookForSuitableTracks() in MP4ifc.c File
> 
> The function call
> 
> err=MP4GetTrackEnabled(baseTrack,&enabled)
> 
>  
> 
> always returns enabled=0

As a first guess, this might be due to a recent (about one year ago) change in 
the mp4filelib based on a Systems corrigendum. I am not sure whether the 
software is outdated or your sequence. Most recent conformance test sequences 
for MPEG-4 Audio are available here:
ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/
Best regards,
Ralph
> 
>  
> 
> After this program terminates.Will You Please tell me the Solutions to 
> above Problem.
> 
>  
> 
> Thanks.
> 
>  
> 
> With regards
> 
> Harisha
> 

-- 
Dipl.-Ing. Ralph Sperschneider  | Phone: +49 9131 776 344
FhG IIS-A                       | Fax:   +49 9131 776 398
Am Wolfsmantel 33               | mailto:sps   iis.fhg.de
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