ffplay doesn't play any audio when given "mono" audio input in windows

[Roger Pack]

ffplay doesn't play any audio when given "mono" audio input

How to reproduce:

% ffplay.exe mono.441.wav
ffplay version N-43594-gf0896a6 Copyright (c) 2003-2012 the FFmpeg developers
  built on Aug 15 2012 21:25:48 with gcc 4.7.1 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      51. 69.100 / 51. 69.100
  libavcodec     54. 52.100 / 54. 52.100
  libavformat    54. 23.101 / 54. 23.101
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  9.100 /  3.  9.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[wav @ 03ee4c80] max_analyze_duration 5000000 reached at 5015510
Input #0, wav, from 'mono.441.wav':
  Duration: 00:00:53.30, bitrate: 705 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 1 channels, s16, 705 kb/s
Seek to  9% ( 0:00:04) of total duration ( 0:00:53)       B f=0/0
   5.73 A-V:  0.000 fd=   0 aq=   24KB vq=    0KB sq=    0B f=0/0
Input #0, s16le, from 'mono.wav':
  Duration: 00:05:19.83, start: 0.000000, bitrate: 127 kb/s
    Stream #0:0: Audio: pcm_s16le, 8000 Hz, 1 channels, s16, 128 kb/s
   3.17 A-V:  0.000 fd=   0 aq=   12KB vq=    0KB sq=    0B f=0/0

[Roger Pack]

plays ok in vlc

[Carl Eugen Hoyos]

Since it plays fine here and the output does not look suspicious in any way, you will have to explain what "does not play" means.

[Roger Pack]

the output does not look suspicious. the histogram output is also ok. It just doesn't output audio to the speakers. (With -ac 2 it works ok though). I did just test it in linux and it works with or without -ac 2, so I suppose it's a windows thing.

[Carl Eugen Hoyos]

I tested ffplay.exe from Zeranoe with attached mono sample and it plays fine via Analog, S/PDIF and HDMI, so I assume this is not a problem that can be solved in FFmpeg.