[FFmpeg-trac] #2883(undetermined:new): avi+aac - AudioSpecificConfig missing

FFmpeg trac at avcodec.org
Tue Aug 20 14:32:21 CEST 2013

#2883: avi+aac - AudioSpecificConfig missing
             Reporter:  Wilbert      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  aac          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by Wilbert):

 I don't know how to do that properly. If i just replace 00 004A 55 with 02
 0012 10, Virtualdub is able to open the file and i hear the sound. But
 beforehand i get a warning 'AVI: Truncated or invalid compressed audio
 format detected (18 bytes, should be 20). Attempting to fix.'.

 If i use AVIMux to mux the files (which does write AudioSpecificConfig and
 sets cbSize=2), it plays fine in Virtualdub.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2883#comment:4>
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