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

Julien Isorce julien.isorce at gmail.com
Thu Jul 16 15:32:55 CEST 2009


2009/7/16 Albert Costa <costa_albert at yahoo.fr>

>
> 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.
>

 So it's not a GStreamer problem.

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...
>

>From my experience, if you can see the hw in graphedit then you can use it
without the sw. If not, you can't.

Try to grab using  "Window Movie Maker" that is installed by default on
winxp
(select "capture from video device")


> Regards,
> Al
>

Julien


>
> ------------------------------
> *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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>>
>>
>
>
>
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