[FFmpeg-trac] #11696(avformat:new): WAV ≥ 4 GiB abnormal decoding due to length field overflow

[FFmpeg]

#11696: WAV ≥ 4 GiB abnormal decoding due to length field overflow
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             Reporter:  wavybaby  |                    Owner:  (none)
                 Type:  defect    |                   Status:  new
             Priority:  minor     |                Component:  avformat
              Version:  7.1       |               Resolution:
             Keywords:  wavdec    |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  1         |
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Comment (by Marton Balint):

 Replying to [comment:4 MasterQuestionable]:
 > ͏    Would it be sensible to automatically apply "-ignore_length":
 > ͏    https://ffmpeg.org/ffmpeg-formats.html#wav (documentation yet
 incomplete)
 > ͏
 https://github.com/FFmpeg/FFmpeg/blob/ce01c7fb58597f525e130f47a13ff77f1db62bf4/libavformat/wavdec.c#L76
 > ͏    ; for all WAV ≥ 4 GiB?
 >
 > ͏    Or why should this length field even be used..?

 Because other chunks might follow the data chunk, and that should not be
 returned as audio data.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11696#comment:6>
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