[FFmpeg-trac] #2361(undetermined:new): Error message: [dshow @ 000000000249efe0] Could not enumerate video devices.

FFmpeg trac at avcodec.org
Thu Mar 14 21:07:46 CET 2013


#2361: Error message: [dshow @ 000000000249efe0] Could not enumerate video
devices.
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  Hotisnottheword                    |                   Status:  new
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  1.1.3        |               Resolution:
             Keywords:  dshow        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by DJX):

 '''ffmpeg -f dshow -i video="UScreenCapture" output.flv'''
 {{{
 ffmpeg -f dshow -i video="UScreenCapture" output.flv
 ffmpeg version N-50911-g9efcfbe Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Mar 13 2013 21:31:52 with gcc 4.7.2 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-libass --enable-libbluray --enable-libcaca --enable-libfreetype
 --enable-libg
 sm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libo
 pencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp
 --enable-li
 bschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
 --enable-lib
 twolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enabl
 e-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
   libavutil      52. 19.100 / 52. 19.100
   libavcodec     55.  0.100 / 55.  0.100
   libavformat    55.  0.100 / 55.  0.100
   libavdevice    54.  4.100 / 54.  4.100
   libavfilter     3. 45.103 /  3. 45.103
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [dshow @ 00000000002eefe0] Could not enumerate video devices.
 video=UScreenCapture: Input/output error
 }}}

 '''ffmpeg -list_devices true -f dshow -i dummy'''
 {{{
 ffmpeg -list_devices true -f dshow -i dummy
 ffmpeg version N-50911-g9efcfbe Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Mar 13 2013 21:31:52 with gcc 4.7.2 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-libass --enable-libbluray --enable-libcaca --enable-libfreetype
 --enable-libg
 sm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libo
 pencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp
 --enable-li
 bschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
 --enable-lib
 twolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enabl
 e-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
   libavutil      52. 19.100 / 52. 19.100
   libavcodec     55.  0.100 / 55.  0.100
   libavformat    55.  0.100 / 55.  0.100
   libavdevice    54.  4.100 / 54.  4.100
   libavfilter     3. 45.103 /  3. 45.103
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [dshow @ 000000000209efe0] DirectShow video devices
 [dshow @ 000000000209efe0] Could not enumerate video devices.
 [dshow @ 000000000209efe0] DirectShow audio devices
 [dshow @ 000000000209efe0]  "Microphone (SoundMAX Integrated"
 [dshow @ 000000000209efe0]  "Rear Input (SoundMAX Integrated"
 dummy: Immediate exit requested
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2361#comment:2>
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