[FFmpeg-trac] #3524(avcodec:closed): FFmpeg MD5 output different with same data

FFmpeg trac at avcodec.org
Fri Apr 4 00:26:38 CEST 2014

#3524: FFmpeg MD5 output different with same data
             Reporter:  ahthovaikied  |                    Owner:
                 Type:  defect        |                   Status:  closed
             Priority:  normal        |                Component:  avcodec
              Version:  git-master    |               Resolution:  invalid
             Keywords:  aac           |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
Changes (by cehoyos):

 * status:  new => closed
 * resolution:   => invalid


 Replying to [comment:7 jamal]:
 > Also, as you said ahthovaikied used two different compiler versions.

 I had tested with a newer and an older gcc version than ahthovaikied (but
 not the same) and could not reproduce a difference.

 > On top of that one configured with --cpu=corei7 and the other --cpu
 =core-avx-i, so even more chances for different float output.

 I also tested the different configure options and saw no difference.

 Or to say it differently: We both agree that AAC is not necessarily bit-
 exact but I would still like to know how to reproduce this issue (while I
 find it less interesting to know which commit broke library upwards-

Ticket URL: <https://trac.ffmpeg.org/ticket/3524#comment:11>
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