[FFmpeg-trac] #3695(undetermined:new): extremely slow 5.1 float aiff decoding since ffmpeg 2.x

[FFmpeg]

#3695: extremely slow 5.1 float aiff decoding since ffmpeg 2.x
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             Reporter:  divide       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  2.1.4        |  undetermined
             Keywords:  regression   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by divide):

 I've just tested with ffmpeg 2.2.2 from http://ffmpeg.zeranoe.com/builds/
 (both 32 and 64 bits) and it shows the same very slow behaviour.
 Repro steps:
 unpack the attached file, then run ffmpeg -i 5.1-32f.aif output.wav

 Notice that the problem doesn't happen with the stereo 32bit float file,
 nor does it happen with the 5.1 16bit signed file.
 It is specific to all aif files with more than 2 channels, float samples,
 and with any ffmpeg 2.x.y version

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Ticket URL: <https://trac.ffmpeg.org/ticket/3695#comment:2>
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