[FFmpeg-trac] #1579(undetermined:new): fix remuxing of imaadpcm in wav

[FFmpeg]

#1579: fix remuxing of imaadpcm in wav
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             Reporter:  ami_stuff    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by ami_stuff):

 Replying to [comment:1 cehoyos]:
 > Since remuxing appears to succeed: Is there a problem with the resulting
 file?
 > Or do I misunderstand?

 The problem here is that the remuxed file does not decode with ms ima
 adpcm codec because frame_size is always set to 0.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1579#comment:2>
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