Re: [GnomeMeeting-list] Creative Webcam problems

[Damien Sandras <dsandras seconix com>]

Le mar 28/10/2003 à 14:41, Anne Wilson a écrit :
> crw-rw----    1 root     video     81,   0 Jan  1  1970 video0
> 

Are you using devfs or not?

If you are using devfs, the /dev/video* have to point to the real
devices placed elsewhere in the arborescence (/dev/v4l/ or /dev/usb
iirc). If you don't have a symlink to the real device, programs
detecting /dev/video0 as a device won't be able to open it as it is not
a real device, but something empty not connected to a real device. So if
you really are using devfs and have a /dev/video0 pointing to nowhere,
either Mandrake is buggy, or you created it manually.

If you are not using devfs, then /dev/video* will be real "files" and
not symlinks.

There is thus a first problem here...

Here is what you should do :
- type "groups" as a normal user and paste the result here
- do a ls -l /proc/video/dev and send us the result
- determine if you are really using devfs or not (look if you have
something in /dev/usb/ and /dev/v4l/


> Error while opening video device /dev/video0
> 
> > Have you tried to strace the program?
> 
> I'm not familiar with the use of strace.  It turns out a huge stream 
> of info and quickly fills the buffer(?).  I tried sending it to a 
> text file - the file was written, but 0 bytes long.  I can copy and 
> paste into a text file, but you will not see the early part of the 
> report.  What now?
> 

Just check the part where /dev/video0 is mentionned (you can use grep),
but I think the solution to your problem is above.

> > Have you tried to run it with --debug=3 and examine the debug
> > output?
> 
> 2003/10/28 13:38:48.148	  0:04.540	           gnomemeeting	
> gnomemeeting	Version 0.98.5 by  on Unix Linux (2.4.21-0.13mdk-i686) 
> at 2003/10/28 13:38:48.150
> 2003/10/28 13:38:48.154	  0:04.545	  H323 Listener:831e458	H323	
> Awaiting TCP connections on port 1720
> 2003/10/28 13:38:48.442	  0:04.833	GMVideoGrabber:41cac008	
> PVideoInputDevice::Open: Found driver hints: Philips USB webcam
> 2003/10/28 13:38:48.446	  0:04.837	GMVideoGrabber:41cac008	
> PVideoInputDevice::Open: format: 15
> 2003/10/28 13:38:48.687	  0:05.078	GMVideoGrabber:41cac008	PVidDev	
> SetColourFormatConverter success for native YUV420P
> 2003/10/28 13:38:48.691	  0:05.082	GMVideoGrabber:41cac008	PVidDev	
> SetFrameSize to 176x144
> 2003/10/28 13:38:48.700	  0:05.091	GMVideoGrabber:41cac008	PVidDev	
> SetColourFormatConverter succeeded for YUV420P and device using BGR24
> 2003/10/28 13:38:48.704	  0:05.095	GMVideoGrabber:41cac008	PVidDev	
> SetFrameSize to 176x144
> 2003/10/28 13:38:58.245	  0:14.636	           H323 Cleaner	H323	
> Cleaning up connections
> 2003/10/28 13:38:59.472	  0:15.863	           gnomemeeting	H323	
> Removing listener Listener[ip$*:1720]
> 2003/10/28 13:38:59.580	  0:15.971	           gnomemeeting	PWLib	
> Forcing termination of thread 0x831da20
> 2003/10/28 13:38:59.585	  0:15.976	           H323 Cleaner	H323	
> Cleaning up connections
> 2003/10/28 13:38:59.588	  0:15.979	           H323 Cleaner	H323	
> Stopped cleaner thread
> 2003/10/28 13:38:59.600	  0:15.991	           gnomemeeting	H323	
> Cleaning up connections
> 2003/10/28 13:38:59.603	  0:15.994	           gnomemeeting	H323	
> Deleted endpoint.
> 
> Does any of this tell you anything useful?
> 

Yes it tells that the device has been successfully opened. So I don't
understand anymore. Can you give the FULL error message please?

> Anne
-- 
 _      Damien Sandras
(o-     GnomeMeeting: http://www.gnomemeeting.org/
//\     FOSDEM 2003:  http://www.fosdem.org
v_/_    H.323 phone:  callto://ils.seconix.com/dsandras seconix com