[FFmpeg-trac] #2361(undetermined:new): Error message: [dshow @ 000000000249efe0] Could not enumerate video devices.
FFmpeg
trac at avcodec.org
Thu Mar 14 11:10:07 CET 2013
#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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