[gst-devel] Re : Re : Re : Grabbing analog video source with gstreamer

[Albert Costa]

Hi,
when using this command line, I just end up with a 'ERROR:..\..\sys\winks\ksvideohelpers.c:487:???: assertion failed: (vih->bmiHeader.biWidth == width)', and a crash.
In graphedit, the property page for the element shows video decoder options (mainly PAL and SECAM formats). The output pin also reports the decoder options, plus the image format. And if I connect a video renderer and try to play, it says no peripheral is connected.
There is a software provided with the hardware, I tested it at home it did allow the grabbing. But I don't know if there's a way to use the hw without the sw...
Regards,
Al



________________________________
De : Julien Isorce <julien.isorce at gmail.com>
À : Gstreamer <gstreamer-devel at lists.sourceforge.net>
Envoyé le : Jeudi, 9 Juillet 2009, 17h12mn 45s
Objet : Re: [gst-devel] Re : Re : Grabbing analog video source with gstreamer

(reply to the gst list)

Note that you should have the same error doing:

set GST_DEBUG=1
gst-launch dshowvideosrc ! fakesink

About the reason of the error, you should have this error only if you disconnect the usb link.

-->Anything with right bouton on the capture filter in graphedit, to open the property page ?
-->property page on the ouput pin ?
-->Is there a software joined to the device ? does it work ?

Julien


2009/7/9 Albert Costa <costa_albert at yahoo.fr>

Hi,
>ok it does appear in the list. I wanted to add a renderer and see if it plays, but...
>>Problem is then that it does not see that I have a source physically connected to it. I guess that's also why gstreamer plugin does not recognize it.
>See attached pict.
>>Al
>
>
>
________________________________
 De : Julien Isorce <julien.isorce at gmail.com>
>À : Discussion of the development of GStreamer
> <gstreamer-devel at lists.sourceforge.net>
>Envoyé le : Jeudi, 9 Juillet 2009, 14h51mn 42s
>Objet : Re: [gst-devel] Re : Grabbing analog video source with gstreamer
>
>
>dshowvideosrc handles a capture device only if the device driver implements the directshow capture interfaces.
>>To check if you driver associated with your "SvideoToUsb device", implements those interfaces or not,
>>you can use "graphedit" (you can find it on the web).
>Then if you see your device in "Video Capture Device" category, then it should be ok.
>
>Julien
>
>
>2009/7/9 Albert Costa <costa_albert at yahoo.fr>
>
>Hi, 
>>thanks for the tips. I actually already use the winbuilds binaries, so I got this one (though I'm on winbuild version 0.10.2, not 0.10.3).
>>However, I cannot see my grabber input with it. It works fine with a simple usb webcam, but looks like the Svideo to USB grabber is not handled the same way, pitty...
>>Regards,
>>Al
>>
>>
>>
________________________________
 >>De : Julien Isorce <julien.isorce at gmail.com>
>>À : Discussion of the development of GStreamer
>> <gstreamer-devel at lists.sourceforge.net>
>>Envoyé le : Jeudi, 9 Juillet 2009, 11h53mn 54s
>>Objet : Re: [gst-devel] Grabbing analog video source with gstreamer
>>
>>
>>Hi,
>>
>>You can try dshowvideosrc from there:
>>
>>http://www.gstreamer-winbuild.ylatuya.es/doku.php?id=download
>>
>>which is different from the one who is in gst-plugins-bad
>>
>>see http://bugzilla.gnome.org/show_bug.cgi?id=517203 for more informations.
>>
>>Julien
>>
>>
>>>>
>>2009/7/8 Philip Jägenstedt <philip at foolip.org>
>>
>>I've done capture with GStreamer using v4l2src, but if you're on XP
>>>>>>have a look at http://asabil.wordpress.com/2007/05/20/directshowvideosrc-for-gstreamer/
>>>>>>Apparently it's dshowsrcwrapper in gst-plugins-bad.
>>>
>>>>>>Philip
>>>
>>>
>>>>>>On Wed, Jul 8, 2009 at 14:41, Albert Costa<costa_albert at yahoo.fr> wrote:
>>>>>>> Hi,
>>>>>>> I would like to know if anyone has already used GStreamer to get video from
>>>>>>> an analog source? For some reasons, I may have to use a S-Video camera for a
>>>>>>> project. So I'll need to get the video from it. Has anyone experienced using
>>>>>>> gst with a frame grabber ? (btw, I'm under winXP)
>>>>>>> I've tried a S-Video to USB converter, but I cannot see which plugin I could
>>>>>>> use : ksvideosrc does not see it.
>>>>>>> Any help or advice would be welcomed,
>>>>>>> Regards,
>>>>>>> Al
>>>>>>>
>>>> ------------------------------------------------------------------------------
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>>>>>>--
>>>>>>Philip Jägenstedt
>>>
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>
>



      
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