[Fwd: Re: USB video driver]

[Donald T Hayford <don%donhayford.com@localhost>]

I really must do something about the "netbsd-current%netbsd.org@localhost" that 
ended up in my address book.

-------- Original Message --------
Subject:        Re: USB video driver
Date:   Sat, 07 Feb 2009 15:01:13 -0500
From:   Donald T Hayford <don%donhayford.com@localhost>
To:     Jared D. McNeill <jmcneill%invisible.ca@localhost>
CC:     netbsd-current%netbsd.org@localhost
References: 	<498DCF6A.9010105%donhayford.com@localhost> 
<498DD121.5060508%invisible.ca@localhost>



Jared D. McNeill wrote:
> Donald T Hayford wrote:
> > I'm trying to get the new USB video drivers to work on an embedded 
> > (non-GUI) Arm processor (NSLU2).  I built a kernel (20081215), added 
> > the appropriate drivers (uvideo, video), see the driver when it boots 
> > up, and can capture video using "cat /dev/video0 >test.avi".  I can 
> > move the avi file to another machine and play the video.  So the 
> > basic driver is essentially working.
> >
> > But I can't get anything else to work from that point.  I built xawtv 
> > so I could use webcam, but get the error message:
> >
> > -bash-3.2$ 
> > webcam                                                              
> > reading config file: 
> > /home/hayford/.webcamrc                                   no grabber 
> > device available
> >
> > .webcamrc has in it:
> > device=/dev/video0
> >
> >
> > when I run v4lctl, I get:
> > -bash-3.2$ v4lctl -c /dev/video0 -v 2 snap 
> > video/testpic1                      vid-open: trying: 
> > bktr...                                                      bktr: 
> > ioctl METEORGSUPPIXFMT: Invalid 
> > argument                                 vid-open: failed: 
> > bktr                                                         no 
> > grabber device available
> >
> > The comment about the brooktree device confuses me, since I thought 
> > the uvideo device was the equivalent.
> >
> > This may not be a NetBSD problem, so a referral to a better source of 
> > info would also be greatly appreciated.
>
> Hi Don --
>
> I'm not sure that our xawtv package builds the v4l2 support code in; 
> you might want to give one of the following applications a shot:
>
>   graphics/cheese
>   graphics/ucview
>   multimedia/mplayer
>
> Hope this helps,
> Jared
Thanks for the info.  These seem to be either X11 based, or in the case 
of mplayer, too math-intensive for a little arm processor.  What I was 
looking for was a simple command-line interface that would grab a few 
frames (as specified) and store them to a file.  I haven't seen much in 
the way of command-line stuff other than those that come with xawtv.  
Sort of ironic, given the recent spate of emails about Desktop NetBSD. 

At any rate, I'll keep looking.

Regards, Don