v4lsrc [SEC=UNCLASSIFIED]

Doran, Mitchell (Student) Mitchell.Doran at dsto.defence.gov.au
Mon May 27 16:33:06 PDT 2013


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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