[FFmpeg-trac] #1849(avcodec:new): AMR NB NODATA changes

[FFmpeg]

#1849: AMR NB NODATA changes
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             Reporter:  krisha   |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  unspecified
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
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 Summary of the bug:

 If you put 0x7C as header (MODE = NO_DATA) the following frames behaves
 weird (only header, no data bytes). In Audacity with FFmpeg v0.6.2 you
 hear a 'knock' and the following signal wave behaves different on zooming
 levels and (this might be also GUI audacity bug). In VLC 2.0.3 this
 'knock' is also heard.

 I attached a sample file with silence and a NO_DATA frame at file offset
 0x166.

 I'm not sure which versions of FFmpeg are affected, but I assume all that
 use the codec from libavcodec/amrnbdec.c

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1849>
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