v4lsrc [SEC=UNCLASSIFIED]

Chuck Crisler ccrisler at mutualink.net
Tue May 28 06:52:04 PDT 2013


You need to get to :4 to really see things. Start selectively to see what
logging you will need, then increase the level. You can probably use the
traces you already have to see what plugins whose logging you need to
examine. Just for grins, you might want to try to update you system (apt
get ...), though without Internet access that might be a challenge.


On Mon, May 27, 2013 at 7:33 PM, Doran, Mitchell (Student) <
Mitchell.Doran at dsto.defence.gov.au> wrote:

> UNCLASSIFIED
>
> Hi,
>
> Didn't get any warnings or errors with GST_DEBUG=2. When I tried
> GST_DEBUG 3 there also seemed nothing suspicious. We are using an old
> camera from Basler.
> http://www.baslerweb.com/products/scout.html?model=147
>
> I feel like maybe the issue could be with my X11
>
> Mitch.
>
> -----Original Message-----
> From:
> gstreamer-devel-bounces+mitchell.doran=dsto.defence.gov.au at lists.freedes
> ktop.org
> [mailto:gstreamer-devel-bounces+mitchell.doran=dsto.defence.gov.au at lists
> .freedesktop.org] On Behalf Of Edward Hervey
> Sent: Monday, 27 May 2013 5:17 PM
> To: Discussion of the development of and with GStreamer
> Subject: Re: v4lsrc [SEC=UNCLASSIFIED]
>
> Hi,
>
>   What kind of camera is this ?
>   Do you get any warnings with the simplest pipeline (i.e. GST_DEBUG=2
> gst-launch-0.10 dv1394src ! fakesink) ?
>
>    Edward
>
> On Mon, 2013-05-27 at 17:05 +0930, Doran, Mitchell (Student) wrote:
> > UNCLASSIFIED
> >
> > That would make sense. I'm pretty unfamiliar with gstreamer. The
> > application I am trying to run tries to get a video stream from my
> > webcam using gstreamer v4lsrc or v4l2src.
> >
> > Back to dv1394. Here is the command I have been trying, along with
> > other variations. (I have to hand type this because my Ubuntu machine
> > has no internet access at the present)
> >
> > Sudo gst-launch-0.10 dv1394src ! Dvdemux ! Queue ! Dvdec ! Videoscale
> !
> > Ffmpegcolorspace ! Capsfilter caps="video/x-raw-yuv, width=320,
> > height=240" ! Xvimagesink Setting pipeline to PAUSED Pipeline is live
> > and does not need PREROLL Setting pipeline to PLAYING
> > Newclock: dvd1394 clock.
> >
> > It stays like this until I stop the application. I can never actually
> > get a window to draw on X though and actually see my webcam feed. From
>
> > what I can gather Xvimagesink and ximagesink are supposed to draw a
> > window, is that correct?
> > I'm not getting any error messages so I am assuming that this pipeline
>
> > is getting my video into the sink, but where it is after that is
> > beyond the scope of my knowledge.
> >
> > If I can get this dv1394src to work properly, I may be able to patch
> > the application I am running to take the video stream from this rather
>
> > than v4lsrc.
> >
> > So, how can I actually see my video feed to test that my webcam is
> > working?
> >
> > Regards,
> > Mitch
> >
> > -----Original Message-----
> > From:
> > gstreamer-devel-bounces+mitchell.doran=dsto.defence.gov.au at lists.freed
> > gstreamer-devel-bounces+es
> > ktop.org
> > [mailto:gstreamer-devel-bounces+mitchell.doran=dsto.defence.gov.au at lis
> > ts .freedesktop.org] On Behalf Of Edward Hervey
> > Sent: Monday, 27 May 2013 4:56 PM
> > To: Discussion of the development of and with GStreamer
> > Subject: Re: v4lsrc [SEC=UNCLASSIFIED]
> >
> > On Mon, 2013-05-27 at 13:43 +0930, Doran, Mitchell (Student) wrote:
> > > UNCLASSIFIED
> > >
> > > Hi Guys,
> > >
> > > Just want to clarify that there is no way to get the v4lsrc plugin
> > > back into gstreamer0.10?
> > >
> > > I can barely find any information on this and my firewire camera
> > > along
> >
> > > with applications only support v4l not v4l2
> >
> >   If it's a firewire camera ... shouldn't you be using dv1394src or
> > hdv1394src ?
> >
> >     Edward
> >
> > >
> > > Regards,
> > > Mitch
> > >
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