Re: [SLUG] webcam image control

From: Chuck Hast (wchast@gmail.com)
Date: Sun Dec 06 2009 - 14:33:10 EST


On Sun, Dec 6, 2009 at 12:58, Eben King <eben01@verizon.net> wrote:
> On Sun, 6 Dec 2009, Chuck Hast wrote:
>

>
> Can't, Synaptic tells me that to do so I have to remove "ubuntu-desktop".
> Apparently it's one of their blessed^Wstandard packages.  As much as
> possible I don't use it however.  Most, if not all, apps are configured to
> ignore it.  However, since they're all precompiled and linked against pa's
> libs, I couldn't remove it even if Ubuntu didn't mind.
>
Hmm, what is the version of the distro, I am running 91.0 here on everything.
It is so plugnplay it is generally boring, indeed I had to jump
through all kinds
of hoops to get my BlueTooth mouse to work on my Netbook when I brought
Win XP up on it, whereas under Ubuntu it just works. No questions no issues
it JUST WORKS what part can the windows fans not understand about that.
I had to go out and download a set of drivers for the stupid thing, Ubuntu it
just worked...

Pulse Audio has been cleaned up greatly over the past year or so, I have not
had to remove it from anything of late, but it has not been that long
ago that it
would not work with a lot of stuff, Skype was like the audio problem from hell.

>> When you plug the cam into the USB (I assume it is USB)
>
> It is, 17a1:0128 .
>
>> how does it show up in the /dev? Mine shows up as /dev/video0,
>
> Mine too.
Ok, it has found the cam and probably installed the proper drivers for
it. Here is the old fall back, which I what I think most all of us use when
we are testing analog cams out, do a apt-get on xwtv and fire it up, I
just put it on one of my Ubuntu systems to check it out and when I
fired it up I it had already found the camera and was showing me ugly
pix of my self...
XAWTV is a very basic prog that just handles a video stream and puts
it on your screen. Start with it, if you can get that to work then you will
be able to work through the rest of it.
If it behaves yours like it does on mine when you start it up you will get
a video window and a welcome screen. If you want to twiddle the knobs
you will need to right click on the video screen, that will bring up your
control screen. XAWTV can read video files it can also read and control
a TV tuner card, but the best thing is it is very easy to get going with
most any analog camera either USB or frame grabber. In your case
you are using a USB cam.

>
>> I just go into VLC as follows
>> Media>Open Capture Device
>>  In Device Selection
>>        Video Device Name:
>> I enter         /dev/video0
>> At the bottom of the Open Capture Device screen is the [Play] button click
>> on
>> that and you should get a opening screen of what your cam is seeing.
>
> We must have different versions of VLC.  I have "0.8.6e Janus (wxWidgets
> interface)".  Here's what I see:
>
Wow yours is OLD!! All of mine on both Ubuntu and SuSE are 1.0.2 Goldeneye
Perhaps you need to bring it up to date. What rev level is your Ubuntu at?

I am at 9.10, it rocks, and rocks and rocks.... I am running SuSE 11.1 on
my main desktop, I prefer it for the heavy lifting I do on my desktop, since I
run KDE on that machine, the others are Ubuntu with the Gnome desktop
because they are not used for a lot of jumping back and forth to a lot of stuff
though all of them have Compiz to make it easier for me to have several things
going at the same time.

Anyhow give XAWTV a try and see if you can see a image with it. It is the
ultimate test tool I think for most of us that play with video on Linux unless
it is a IP cam, then things change.

-- 
Chuck Hast  -- KP4DJT --
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."

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