[FFmpeg-trac] #3525(undetermined:closed): AAC to PCM produced a lot of noise!

[FFmpeg]

#3525: AAC to PCM produced a lot of noise!
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             Reporter:  kaienfr      |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:  invalid
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by kaienfr):

 Nothing changed with swr_alloc()

 Here is the comparaisons of decoded output with and without resampling
 produced by the same code with different ffmpeg versions. The figure is
 made with "cool edit pro"

 1. old ffmpeg without resampling (44100, stereo, s16le)
 [[Image(https://cloud.githubusercontent.com/assets/5306849/2605904
 /910d68fa-bb49-11e3-9baa-2ccd70b22645.JPG)]]
 2. new ffmpeg without resampling (44100, stereo, 32bit IEEE float 0.24):
 [[Image(https://cloud.githubusercontent.com/assets/5306849/2605902/91075460-bb49-11e3-8be2-426ce9d779d8.JPG)]]
 3. old ffmpeg with resampling (44100, stereo, s16le):
 [[Image(https://cloud.githubusercontent.com/assets/5306849/2605905/910e8050-bb49-11e3
 -82db-72d3c7eaaf99.JPG)]]
 4. new ffmpeg with resampling (44100, stereo, s16le):
 [[Image(https://cloud.githubusercontent.com/assets/5306849/2605903/91089546-bb49-11e3-9ef4-3646d2f94775.JPG)]]

 You can observe quite a different between the outputs. Old ffmpeg is all
 right for both decode and resampling, well new ffmpeg does not work well
 on neither of them.

 I haven't try filter, I will try it later. Thanks again for your futher
 helps!

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Ticket URL: <https://trac.ffmpeg.org/ticket/3525#comment:3>
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