[FFmpeg-trac] #3759(undetermined:new): ffmpeg fails to decode empty wav file

[FFmpeg]

#3759: ffmpeg fails to decode empty wav file
-------------------------------------+-------------------------------------
             Reporter:  Sergey       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Get ffmpeg:
 {{{
 $ wget
 http://ffmpeg.gusari.org/static/32bit/ffmpeg.static.32bit.2014-07-06.tar.gz
 $ tar xf ffmpeg.static.32bit.2014-07-06.tar.gz
 }}}
 Create empty file:
 {{{
 $ ./ffmpeg -f s16le -ar 48000 -ac 2 -i /dev/null -acodec copy empty.wav
 }}}
 Fail to open it:
 {{{
 $ ./ffmpeg -i empty.wav
 ffmpeg version N-63893-gc69defd Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Jul  6 2014 05:13:25 with gcc 4.6 (Debian 4.6.3-1)
   configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-
 cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-
 ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-
 libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared
 --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-
 postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl
 --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray
 --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-
 libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3
 --enable-libvpx
   libavutil      52. 89.100 / 52. 89.100
   libavcodec     55. 66.101 / 55. 66.101
   libavformat    55. 43.100 / 55. 43.100
   libavdevice    55. 13.101 / 55. 13.101
   libavfilter     4.  8.100 /  4.  8.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 19.100 /  0. 19.100
   libpostproc    52.  3.100 / 52.  3.100
 [wav @ 0xac6f8e0] Estimating duration from bitrate, this may be inaccurate
 [wav @ 0xac6f8e0] Could not find codec parameters for stream 0 (Audio:
 pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, 1536 kb/s):
 unspecified sample format
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 empty.wav: could not find codec parameters
 }}}

 May be related to #3746

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3759>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker