[FFmpeg-trac] #11696(avcodec:new): Long PCM WAV incomplete decoding?

FFmpeg trac at avcodec.org
Sun Aug 3 02:50:52 EEST 2025


#11696: Long PCM WAV incomplete decoding?
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             Reporter:  wavybaby   |                    Owner:  (none)
                 Type:  defect     |                   Status:  new
             Priority:  minor      |                Component:  avcodec
              Version:  7.1        |               Resolution:
             Keywords:  pcm_f32le  |               Blocked By:
             Blocking:             |  Reproduced by developer:  0
Analyzed by developer:  1          |
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Comment (by cgbug):

 Replying to [comment:2 Marton Balint]:
 > You might want to try using the -ignore_length 1 option. In wav fiels
 the data chunk contains the wave data and it has a 32 bit length, so if
 your phone writes some random data there instead of UINT32_MAX, then that
 can limit the read audio.

 Based on the numbers above I would guess it has overflown value.

 131 min / 5.62 GB * (5.62 - 4) = 37.7 min
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Ticket URL: <https://trac.ffmpeg.org/ticket/11696#comment:3>
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