v4l2src (harmless) warning, why?

[Kulecz, Walter (JSC-SK)[WYLE INTEG. SCI. & ENG.]]

Why do I get this warning from v4l2src when I check the current video norm?
(HelloVideo:21453): GLib-GObject-WARNING **: IA__g_object_notify: object class `GstV4l2Src' has no property named `norm'

I check and report with:
    // report previous video norm
    GstTunerNorm *ntsc=gst_tuner_get_norm(tuner);
    g_print("Previous Norm: %s\n", ntsc->label);

And the label returned is correct, "PAL" after a reboot for this card, and "NTSC" after I or some other TV application sets it.
 
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[Tim-Philipp Müller-2]

On Thu, 2009-10-01 at 16:55 -0500, Kulecz, Walter (JSC-SK)[WYLE INTEG.
SCI. & ENG.] wrote:

> Why do I get this warning from v4l2src when I check the current video
>  norm? (HelloVideo:21453): GLib-GObject-WARNING **:
>  IA__g_object_notify: object class `GstV4l2Src' has no property named
>  `norm'

This looks like a bug to me. Could you file a bug against
gst-plugins-good / v4l2src in bugzilla?

 Cheers
  -Tim



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[Filippo]

On Thu, Oct 1, 2009 at 11:55 PM, Kulecz, Walter (JSC-SK)[WYLE INTEG.
SCI. & ENG.] <[hidden email]> wrote:
> Why do I get this warning from v4l2src when I check the current video norm?
> (HelloVideo:21453): GLib-GObject-WARNING **: IA__g_object_notify: object class `GstV4l2Src' has no property named `norm'


What gst-plugins-good version are you using? I had a similar warning
but it has been fixed by
http://cgit.freedesktop.org/gstreamer/gst-plugins-good/commit/?id=4cefe7e94477e1b097638b30718b4f99640de7b3
almost an year ago.

Cheers,

Filippo

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[Kulecz, Walter (JSC-SK)[WYLE INTEG. SCI. & ENG.]]

I'm using Ubuntu 8.04 which appears to be gstreamer-0.10.18

Is there a reasonably easy way to build the current gstreamer without breaking the Ubuntu dependencies?

I'm thinking that using appsink might be better for my purposes that writing a filter element, although I've already succeded in writing a trivial plugin video filter (binary threshold an image).  Appsink doesn't seem to be part of my version of gstreamer.

At this point I'm exploring my options and trying to learn about alternatives before starting the version 2 redesign of my video image processing application that is currently done with a mix of v4l, v4l2,  Xlib code and a commercial UI library that doesn't appear to have much of a future.  Its on ubuntu 6.06 and has worked quite well so far, but code is very hard to follow using a lot of obsolete and arcane stuff basically lifted from XawTV and a few other things I'd found.  I suspect when I'm really ready to do it,  I'll be able to use Ubuntu 10.4.

--wally.

________________________________________
From: Filippo Argiolas [[hidden email]]
Sent: Friday, October 02, 2009 3:48 AM
To: Discussion of the development of GStreamer
Subject: Re: [gst-devel] v4l2src (harmless) warning, why?

On Thu, Oct 1, 2009 at 11:55 PM, Kulecz, Walter (JSC-SK)[WYLE INTEG.
SCI. & ENG.] <[hidden email]> wrote:
> Why do I get this warning from v4l2src when I check the current video norm?
> (HelloVideo:21453): GLib-GObject-WARNING **: IA__g_object_notify: object class `GstV4l2Src' has no property named `norm'


What gst-plugins-good version are you using? I had a similar warning
but it has been fixed by
http://cgit.freedesktop.org/gstreamer/gst-plugins-good/commit/?id=4cefe7e94477e1b097638b30718b4f99640de7b3
almost an year ago.

Cheers,

Filippo
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