-segment_format not works with some filenames

[q345t7n3o67ym23oy8939t]

When segmenting the stream using the module "segment" when explicitly specify format of segments the file name affects the ffmpeg. Specifies the format of the segments use the option "-segment_format wav".
When the filename ends in ".ts" ffmpeg works, and when the file name ends in ".qweasd" - does not work.

Text of error: Output file #0 does not contain any stream

How to reproduce (on windows 8.1 x64):
Does not work:

% "ffmpeg" "-loglevel" "debug" "-t" "50" "-f" "lavfi" "-i" "aevalsrc=sin(400*2*PI*t)" "-ar" "8000" "-f" "segment" "-codec" "pcm_s16le" "-segment_format" "wav" "-segment_list" "%Temp%\list.qweasd" "-segment_list_size" "0" "-segment_list_type" "csv" "-segment_time" "5" "-segment_start_number" "0" "-reset_timestamps" "1" "%Temp%\part %d.qweasd" 2>"ffmpeg segment qweasd.log"

Does work:

% "ffmpeg" "-loglevel" "debug" "-t" "50" "-f" "lavfi" "-i" "aevalsrc=sin(400*2*PI*t)" "-ar" "8000" "-f" "segment" "-codec" "pcm_s16le" "-segment_format" "wav" "-segment_list" "%Temp%\list.qweasd" "-segment_list_size" "0" "-segment_list_type" "csv" "-segment_time" "5" "-segment_start_number" "0" "-reset_timestamps" "1" "%Temp%\part %d.ts" 2>"ffmpeg segment ts.log"

ffmpeg downloaded from ​http://ffmpeg.zeranoe.com/builds/ 2015-04-13.

ffmpeg version N-71418-g818e889 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (GCC)

Log with error:

ffmpeg version N-71418-g818e889 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  libavutil      54. 22.101 / 54. 22.101
  libavcodec     56. 34.100 / 56. 34.100
  libavformat    56. 30.100 / 56. 30.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 14.100 /  5. 14.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '50'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'lavfi'.
Reading option '-i' ... matched as input file with argument 'aevalsrc=sin(400*2*PI*t)'.
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '8000'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'segment'.
Reading option '-codec' ... matched as option 'codec' (codec name) with argument 'pcm_s16le'.
Reading option '-segment_format' ... matched as AVOption 'segment_format' with argument 'wav'.
Reading option '-segment_list' ... matched as AVOption 'segment_list' with argument 'C:\Users\User\AppData\Local\Temp\list.qweasd'.
Reading option '-segment_list_size' ... matched as AVOption 'segment_list_size' with argument '0'.
Reading option '-segment_list_type' ... matched as AVOption 'segment_list_type' with argument 'csv'.
Reading option '-segment_time' ... matched as AVOption 'segment_time' with argument '5'.
Reading option '-segment_start_number' ... matched as AVOption 'segment_start_number' with argument '0'.
Reading option '-reset_timestamps' ... matched as AVOption 'reset_timestamps' with argument '1'.
Reading option 'C:\Users\User\AppData\Local\Temp\part %d.qweasd' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file aevalsrc=sin(400*2*PI*t).
Applying option t (record or transcode "duration" seconds of audio/video) with argument 50.
Applying option f (force format) with argument lavfi.
Successfully parsed a group of options.
Opening an input file: aevalsrc=sin(400*2*PI*t).
detected 4 logical cores
[Parsed_aevalsrc_0 @ 00000000044eda40] compat: called with args=[sin(400*2*PI*t)]
[Parsed_aevalsrc_0 @ 00000000044eda40] Setting 'exprs' to value 'sin(400*2*PI*t)'
[out @ 00000000044ee420] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_aevalsrc_0' and the filter 'out'
[AVFilterGraph @ 00000000044eb640] query_formats: 2 queried, 0 merged, 3 already done, 0 delayed
[Parsed_aevalsrc_0 @ 00000000044eda40] sample_rate:44100 chlayout:mono duration:-1
[auto-inserted resampler 0 @ 000000000450d4c0] [SWR @ 0000000000357ae0] Using double precision mode
[auto-inserted resampler 0 @ 000000000450d4c0] ch:1 chl:mono fmt:dblp r:44100Hz -> ch:1 chl:mono fmt:dbl r:44100Hz
[lavfi @ 00000000044ebd20] All info found
Input #0, lavfi, from 'aevalsrc=sin(400*2*PI*t)':
  Duration: N/A, start: 0.000000, bitrate: 2822 kb/s
    Stream #0:0, 1, 1/44100: Audio: pcm_f64le, 44100 Hz, mono, dbl, 2822 kb/s
Successfully opened the file.
Parsing a group of options: output file C:\Users\User\AppData\Local\Temp\part %d.qweasd.
Applying option ar (set audio sampling rate (in Hz)) with argument 8000.
Applying option f (force format) with argument segment.
Applying option codec (codec name) with argument pcm_s16le.
Successfully parsed a group of options.
Opening an output file: C:\Users\User\AppData\Local\Temp\part %d.qweasd.
Successfully opened the file.
Output #0, segment, to 'C:\Users\User\AppData\Local\Temp\part %d.qweasd':
Output file #0 does not contain any stream

[q345t7n3o67ym23oy8939t]

Logs

[Carl Eugen Hoyos]

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