[FFmpeg-trac] #7892(undetermined:new): FFMpeg produces invalid WAV files

[FFmpeg]

#7892: FFMpeg produces invalid WAV files
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             Reporter:  birdie  |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  undetermined
              Version:  4.1     |               Resolution:
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
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Comment (by heleppkes):

 Don't use redirection to write your file. FFmpeg can't write a proper size
 tag if it cannot seek in the file.

 right:
 ffmpeg -ss 00:00:30 -i 1.flac -vn -acodec pcm_s16le -ar 44100 -f wav
 -loglevel warning 1.wav

 wrong:
 ffmpeg -ss 00:00:30 -i 1.flac -vn -acodec pcm_s16le -ar 44100 -f wav
 -loglevel warning - > 1.wav

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Ticket URL: <https://trac.ffmpeg.org/ticket/7892#comment:1>
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