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

[FFmpeg]

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

 I am trying to capture my desk top using the instructions here:
 [http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20grab%20the%20desktop%20(screen)%20with%20FFmpeg]

 I downloaded ffmpeg from here:
 [http://ffmpeg.zeranoe.com/builds/win64/static/]

 I have the error message "Could not enumerate video devices." on three
 different computers:

 All Microsoft Windows 7 64 bit two of which run Professional edition the
 other Home edition

 When I use this command in command prompt: "ffmpeg -list_devices true -f
 dshow -i dummy" I get the following error: "[dshow @ 000000000249efe0]
 Could not enumerate video devices." in the output

 When I use this command:
 "http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20grab%20the%20desktop%20(screen)%20with%20FFmpeg"
 I get a different error message: "[dshow @ 00000000023bd7a0]Could not
 enumerate video devices. video=UScreenCapture:audio=Microphone:
 Input/output error"  in the output

 How to reproduce:
 {{{
 % ffmpeg -f dshow -i video="UScreenCapture":audio="Microphone" output.flv
 ffmpeg version N-50663-gb5e5ed8
 libavutil      52. 19.100 / 52. 19.100
 libavcodec     54. 92.100 / 54. 92.100
 libavformat    54. 63.104 / 54. 63.104
 libavdevice    54.  3.103 / 54.  3.103
 libavfilter     3. 44.101 /  3. 44.101
 libswscale      2.  2.100 /  2.  2.100
 libswresample   0. 17.102 /  0. 17.102
 libpostproc    52.  2.100 / 52.  2.100
 built on ...
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

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