[Helix-producer-dev] Could not initialize video capture device (VIDIOCGMBUF) on OLPC

[Helix-producer-dev] Could not initialize video capture device (VIDIOCGMBUF) on OLPC

Peter Krenesky peter at osuosl.org
Thu Aug 16 13:44:43 PDT 2007


Hi all,

I'm working to port the producerSDK to python for use by the one laptop per 
child (OLPC).  I've gotten enough of the api ported to capture video/audio on 
my desktop.  

Audio capture works on the OLPC but video does not.  I get the following log 
messages while trying to create an input for video capture:

Diagnostic      None    2007/08/16 16:48:38     0       Failed to get string: 
audioDeviceID
        Diagnostic      None    2007/08/16 16:48:38     0       Failed to get 
string: videoDevicePort
        Diagnostic      None    2007/08/16 16:48:38     0       Ignoring 
symlink device /dev/video
        Diagnostic      None    2007/08/16 16:48:38     0       Using device 
name 'cafe_ccic /dev/video0' matching device number 0
        Diagnostic      None    2007/08/16 16:48:38     0       Video 
device '/dev/video0' (cafe_ccic /dev/video0) opened
        Diagnostic      None    2007/08/16 16:48:39     0       Color format 
I420 for video capture device set (VIDIOCSPICT: depth=12, palette=15, 
rscolor==24)
        Diagnostic      None    2007/08/16 16:48:39     0       Port 1 () set 
(VIDIOCSCHAN)
        Error   None    2007/08/16 16:48:39     0       Could not initialize 
video capture device (VIDIOCGMBUF)
        Diagnostic      None    2007/08/16 16:48:39     0       Number of 
output streams 0 does not match number of requested media types 1
        Error   None    2007/08/16 16:48:39     0       Unable to initialize 
input


-- 
------------------------------------------
 Peter Krenesky
 Senior Analyst Programmer
 Open Source Lab
 Oregon State University
 Work: 541-737-9572
 Email: Peter at osuosl.org



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