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

Julien Isorce julien.isorce at gmail.com
Thu Apr 8 15:01:25 CEST 2010 

Hi,

Please adapt your patch (allowing to create xbar) to the git head and please
submit it to bugzilla.

Sincerely
Julien

2010/4/8 Albert Costa <costa_albert at yahoo.fr>

> Hi,
> this has been a long time since we spoke about this problem. I'm currently
> still using my own code-modified dshowvideosrc element, using winbuilds
> version 0.10.4.
> I have not tried any fresher version since (I know what I have and it
> works, that's enough for me), so has the element been modified allowing to
> create xbar element inside the plugin?
> 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 :* Mar 21 juillet 2009, 13 h 43 min 19 s
> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Re : Re : Re : Re : Re
> : Grabbing analog video source with gstreamer
>
>
>
> 2009/7/21 Albert Costa <costa_albert at yahoo.fr>
>
>> Hi Julien,
>> I've followed the last advice, and did put the interface query once all
>> the elements have been added, and finally got it to work!!! And it still
>> works as well with conventional "1-element' capture filter (like usb
>> webcam).
>>
>
> Cool ! DirectShow owned once more !
>
>
>> I'll now put things more cleanly in my code, and certainly submit a patch
>> to gstreamer so that other people can also use xbars.
>>
>
> Do not make the patch right now. I am currently refactoring the
> dshowsrcwrapper that is in the git repository.
> More over it does not contain the improvement I made but they are in the
> gstreamer winBuilds.
> I will ping you in time.
>
>
>> Thanks a very lot anyway, I couldn't have solved the problem (at least in
>> reasonable time) without your precious help,
>>
>
> No problem.
>
>
>> Best Regards,
>> Al
>>
>
> ++
> Julien
>
>>
>>
>> ------------------------------
>> *De :* Julien Isorce <julien.isorce at gmail.com>
>> *À :* Discussion of the development of GStreamer <
>> gstreamer-devel at lists.sourceforge.net>
>> *Envoyé le :* Mardi, 21 Juillet 2009, 11h32mn 04s
>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Re : Re : Re : Re :
>> Grabbing analog video source with gstreamer
>>
>>
>>
>> 2009/7/21 Albert Costa <costa_albert at yahoo.fr>
>>
>>> Hello Julien,
>>> I've replaced the IID_IFilterGraph by IID_IGraphBuilder in the hres =
>>> CoCreateInstance (&CLSID_FilterGraph, ..
>>> I've also added the creation of the capturegraphbuilder2 element, and
>>> added the SetFiltergraph after both are created (I also changed the type
>>> of the filtergraph, such that the setfiltergraph won't warn about
>>> incompatible types: IGraphBuilder/*IFilterGraph*/ *filter_graph)
>>>
>>> Now, when I launch the pipeline, I still have the 'not connected' error
>>> when calling the run method.
>>>
>>
>> ok.
>> The doc says : "You cannot directly create this filter with *
>> CoCreateInstance*. The *ICaptureGraphBuilder2*<http://msdn.microsoft.com/en-us/library/dd376359%28VS.85%29.aspx>interface automatically adds this filter to the graph as needed."
>>
>> so maybe the cross will not be added until the findinterface work.
>>
>>
>>>
>>> I've tried to check if I could use the piece of code from the
>>> IAMCrossbar, including this:
>>> hres = ICaptureGraphBuilder2_FindInterface(
>>>  src->capture_graph,
>>> &LOOK_UPSTREAM_ONLY,
>>> NULL,
>>> src->video_cap_filter,
>>>  &IID_IAMCrossbar,
>>> (void**)&pXBar1
>>> );
>>> after I created the capture_graph object (would be your pBuild in the
>>> example).
>>> But this failed with error code 0x80004005 (E_FAIL).
>>>
>>
>> try to call it after : "hres = IFilterGraph_AddFilter (src->filter_graph,
>> src->video_cap_filter," (and  sure after SetFiltergraph)
>>
>> try also to replace &LOOK_UPSTREAM_ONLY bu NULL.
>>
>> if it still does not work. You can try to remove all your changes and just
>> create the cross bar with CoCreateInstance****. (maybe the doc is just
>> wrong in the case we are not using the capturegraphbuilder2)
>>
>> If you can retrieve the crossbar in some way, then
>> you have to check that the crossbar is connected to the
>> src->video_cap_filter.
>> Make the connection if it does not exist.
>>
>> Finally, I join to this mail a screenshot: a capture card that does not
>> need to have the crossbar connected, in order to play. (Note that a lot of
>> capture cards does not support the crossbar)
>>
>>
>> Julien
>>
>>
>>>
>>> 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 :* Lundi, 20 Juillet 2009, 18h25mn 22s
>>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Re : Re : Re :
>>> Grabbing analog video source with gstreamer
>>>
>>> ok you can try two things in dshowvideosrc.c,:
>>>
>>> just replace IID_IFilterGraph by IID_IGraphBuilder
>>> (IGraphBuilder inherit from IFilterGraph)
>>>
>>> I think it will not resolve the problem so you also can try:
>>>
>>> in dshowvideosrc.c before "hres = CoCreateInstance (&CLSID_FilterGraph,
>>> ..."
>>> create first a capture graph builder 2:
>>>
>>> HRESULT hr = CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL,
>>>
>>>
>>>         CLSCTX_INPROC_SERVER, IID_ICaptureGraphBuilder2, (void**)&pBuild );
>>>
>>>
>>> then if it fails report an error.
>>>
>>>
>>> after ""hres = CoCreateInstance (&CLSID_FilterGraph, ..."
>>>
>>> do this:
>>>
>>>
>>> pBuild->SetFiltergraph(pGraph);
>>>
>>> (other infos:
>>>
>>> IGraphBuilder *pGraph = NULL;
>>>
>>>
>>>
>>> ICaptureGraphBuilder2 *pBuild = NULL;
>>>
>>> http://msdn.microsoft.com/en-us/library/dd373396(VS.85).aspx <http://msdn.microsoft.com/en-us/library/dd373396%28VS.85%29.aspx>
>>> )
>>>
>>>
>>>
>>> ++
>>>
>>> Julien
>>>
>>>
>>>
>>> 2009/7/20 Albert Costa <costa_albert at yahoo.fr>
>>>
>>>> Hi,
>>>> nope, the xbar is not added automatically when rendering the pin. It
>>>> only creates the videorenderer, but not the crossbar (and there no 'render
>>>> pin' option for the analog input pin). I've downloaded the whole winbuilds
>>>> source&project files, and I'm able to recompile the complete gstreamer. So
>>>> in theory I can modify the dshow plugin (I started by ading some log lines,
>>>> it works...). But I'm not an expert (not yet dx friendly as you say :-) ),
>>>> so I'm sure I want to step ahead in that hell...
>>>> 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 :* Lundi, 20 Juillet 2009, 15h30mn 32s
>>>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Re : Re : Grabbing
>>>> analog video source with gstreamer
>>>>
>>>>
>>>>
>>>> 2009/7/20 Albert Costa <costa_albert at yahoo.fr>
>>>>
>>>>> Hi Julien,
>>>>> unfortunately, that doesn't work. As soon as I remove the link from the
>>>>> x-bar to the analog capture element, trying to play fails with 'no connected
>>>>> device' message.
>>>>> Regards,
>>>>> Al
>>>>>
>>>>
>>>> Ok.
>>>> The crossbar filter is added automatically when clicking on "render pin"
>>>> on the capture filter 's ouput pin in graphedit ?
>>>>
>>>> According to :
>>>> http://msdn.microsoft.com/en-us/library/dd390991(VS.85).aspx<http://msdn.microsoft.com/en-us/library/dd390991%28VS.85%29.aspx>
>>>> the crossbar is automatically added by the CaptureGraphBuilder2
>>>>
>>>> But dshowvideosrc does not uses CaptureGraphBuilder2.
>>>>
>>>> If you are directshow friendly and if you are able to compile
>>>> dshowvideosrc, then you could try to
>>>> create the capturegraphbuilder2 then use SetFilterGraph on it to set the
>>>> FilterGraph instance.
>>>> Then it should work.
>>>>
>>>> It's just a matter of few code lines.
>>>>
>>>> You are just entering in the directshow hell
>>>>
>>>> Julien
>>>>
>>>>
>>>>>
>>>>> ------------------------------
>>>>> *De :* Julien Isorce <julien.isorce at gmail.com>
>>>>> *À :* Discussion of the development of GStreamer <
>>>>> gstreamer-devel at lists.sourceforge.net>
>>>>> *Envoyé le :* Lundi, 20 Juillet 2009, 11h39mn 11s
>>>>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Re : Grabbing
>>>>> analog video source with gstreamer
>>>>>
>>>>> hmm, could you try to create again the same graph than the one in the
>>>>> screenshot.
>>>>> But, just before to click on play, try to disconnect the crossbar from
>>>>> the capture filtre.
>>>>> Then click play and tell me if that works.
>>>>>
>>>>> if yes, try to do the same steps, except you just remove the crossbar
>>>>> before to play.
>>>>>
>>>>> If that works, it means that there is no default "route" and so a
>>>>> physical input has to be set before to play the graph.
>>>>>
>>>>> Julien
>>>>>
>>>>> 2009/7/20 Julien Isorce <julien.isorce at gmail.com>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> First, the" missing" element you was talking about is a classic
>>>>>> "crossbar" directshow filter.
>>>>>> Drivers of capture devices that contain a tuner, usually implement the
>>>>>> crossbar interface.
>>>>>> So it's not something weird.
>>>>>>
>>>>>> Second, the not normal thing is that the capture filter needs to be
>>>>>> connected to the crossbar in order to start.
>>>>>> (and that's why you got "not connected device")
>>>>>>
>>>>>> I have no tuner capture device here so I cannot send you a screenshot.
>>>>>>
>>>>>> Well, it should have a way to avoid the use of the crossbar filter.
>>>>>>
>>>>>> Julien
>>>>>>
>>>>>>
>>>>>> 2009/7/17 Albert Costa <costa_albert at yahoo.fr>
>>>>>>
>>>>>>> Hi,
>>>>>>> I send the screenshot of the working graph. As you can see (and as I
>>>>>>> explained in my last post), it needs 2 elements to capture the source, which
>>>>>>> is why the dshowvideosrc element cannot work with this device (because it
>>>>>>> only expects/adds one element).
>>>>>>> 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 :* Vendredi, 17 Juillet 2009, 17h18mn 27s
>>>>>>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Re : Grabbing analog
>>>>>>> video source with gstreamer
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 2009/7/17 Albert Costa <costa_albert at yahoo.fr>
>>>>>>>
>>>>>>>> Hi Julien,
>>>>>>>> thanks for your patient help! I've followed your advice. I have
>>>>>>>> connected the graphedit to the running thread of virtualdub acquisition, so
>>>>>>>> I have seen the full graph running.
>>>>>>>>
>>>>>>>
>>>>>>> ok cool
>>>>>>>
>>>>>>>
>>>>>>>> There was a missing element when I tried previously to build the
>>>>>>>> chain myself. So now I'm also able to grab from graphedit, using the correct
>>>>>>>> elements.
>>>>>>>>
>>>>>>>
>>>>>>> What was exactly the missing element ? could you send us a screenshot
>>>>>>> ?
>>>>>>> right click on the output pin, then "render pin" does not insert this
>>>>>>> element ?
>>>>>>>
>>>>>>>
>>>>>>>>  Now, from the gstreamer point of view, how can I know which
>>>>>>>> elements the plugin really tries to put in the graph? (and yes, the reported
>>>>>>>> error means 'no connected device').
>>>>>>>>
>>>>>>>
>>>>>>> dshowvideosrc just builds a directshow graph that contains a "video
>>>>>>> capture source filter" and
>>>>>>> a "custom directshow fakesink filter" (this fakesink has nothing to
>>>>>>> deal with the gstreamer one, and you cannot instanciate it in graphedit)
>>>>>>>
>>>>>>> But this "custom directshow fakesink filter" accepts any pin caps.
>>>>>>>
>>>>>>> So the following should works:
>>>>>>>
>>>>>>> gst-launch-0.10 dshowvideosrc device-name="your device name that you
>>>>>>> see in graphedit in video capture source category" ! fakesink
>>>>>>>
>>>>>>> Any infos on the missing element that resolved the "no connected
>>>>>>> device" may help.
>>>>>>>
>>>>>>> Have you also tried to update the driver of you device ?
>>>>>>>
>>>>>>> Julien
>>>>>>>
>>>>>>>
>>>>>>>> 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 :* Vendredi, 17 Juillet 2009, 15h42mn 42s
>>>>>>>> *Objet :* Re: [gst-devel] Re : Re : Re : Re : Grabbing analog video
>>>>>>>> source with gstreamer
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> 2009/7/17 Albert Costa <costa_albert at yahoo.fr>
>>>>>>>>
>>>>>>>>> Hi again,
>>>>>>>>> I've moved a bit forward, but not enought yet to achieve grabbing
>>>>>>>>> with gstreamer. First thing I did was to check I could acquire from
>>>>>>>>> WinMovieMaker, and that worked. I even successed with virtualdub.
>>>>>>>>>
>>>>>>>>
>>>>>>>> ok but still does not work with graphedit ? if yes this is really
>>>>>>>> strange. You have to figure out what is going on because dshowvideosrc
>>>>>>>> builds a directshow graph as graphedit does.
>>>>>>>>
>>>>>>>>
>>>>>>>>> Then I noticed was that my grabber source was emiting in YUY2
>>>>>>>>> format. When I gst-inspected my dshowvideosrc I realized it was not a
>>>>>>>>> supported format (was version 0.10.10), which explained the 'could not link
>>>>>>>>> elements' message I had with a simple dshowvideosrc ! fakesink pipeline.
>>>>>>>>> I have installed latest winbuilds version (now 0.10.4-prerelease).
>>>>>>>>> This one handles YUY2. But now I get a new error
>>>>>>>>> "gstdshowvideosrc.c:653:gst_dshowvideosrc_change_state: Can't RUN the
>>>>>>>>> directshow capture graph (error=-2147023729)"
>>>>>>>>>
>>>>>>>>
>>>>>>>> I think this is the same error as you got in graphedit ("device not
>>>>>>>> connected")
>>>>>>>>
>>>>>>>>
>>>>>>>>> I have tried to check on the web possible problems, but found
>>>>>>>>> nothing relevant. Only thing was to check directx version, and I have 9.0c.
>>>>>>>>> It feels frustrating to see all components but gstreamer able to
>>>>>>>>> acquire my video...
>>>>>>>>>
>>>>>>>>
>>>>>>>> You could report the graphedit problem to the device company. They
>>>>>>>> often uses it.
>>>>>>>> If you resolve the graphedit pb then dshowvideosrc will work. That's
>>>>>>>> all I can do without having the device in my hands.
>>>>>>>>
>>>>>>>>
>>>>>>>>> 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, 16 Juillet 2009, 15h32mn 55s
>>>>>>>>> *Objet :* Re: [gst-devel] Re : Re : Re : Grabbing analog video
>>>>>>>>> source with gstreamer
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 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
>>>>>>>>>>>>> >
>>>>>>>>>>>>> >
>>>>>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>>>>>> > Enter the BlackBerry Developer Challenge
>>>>>>>>>>>>> > This is your chance to win up to $100,000 in prizes! For a
>>>>>>>>>>>>> limited time,
>>>>>>>>>>>>> > vendors submitting new applications to BlackBerry App
>>>>>>>>>>>>> World(TM) will have
>>>>>>>>>>>>> > the opportunity to enter the BlackBerry Developer Challenge.
>>>>>>>>>>>>> See full prize
>>>>>>>>>>>>> > details at: http://p.sf.net/sfu/Challenge
>>>>>>>>>>>>> > _______________________________________________
>>>>>>>>>>>>> > gstreamer-devel mailing list
>>>>>>>>>>>>> > gstreamer-devel at lists.sourceforge.net
>>>>>>>>>>>>> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>>>>>> >
>>>>>>>>>>>>> >
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> --
>>>>>>>>>>>>> Philip Jägenstedt
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>>>>>>>> This is your chance to win up to $100,000 in prizes! For a
>>>>>>>>>>>>> limited time,
>>>>>>>>>>>>> vendors submitting new applications to BlackBerry App World(TM)
>>>>>>>>>>>>> will have
>>>>>>>>>>>>> the opportunity to enter the BlackBerry Developer Challenge.
>>>>>>>>>>>>> See full prize
>>>>>>>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>> gstreamer-devel mailing list
>>>>>>>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>>>>>>> This is your chance to win up to $100,000 in prizes! For a
>>>>>>>>>>>> limited time,
>>>>>>>>>>>> vendors submitting new applications to BlackBerry App World(TM)
>>>>>>>>>>>> will have
>>>>>>>>>>>> the opportunity to enter the BlackBerry Developer Challenge. See
>>>>>>>>>>>> full prize
>>>>>>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> gstreamer-devel mailing list
>>>>>>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>>>>> This is your chance to win up to $100,000 in prizes! For a limited
>>>>>>>>>> time,
>>>>>>>>>> vendors submitting new applications to BlackBerry App World(TM)
>>>>>>>>>> will have
>>>>>>>>>> the opportunity to enter the BlackBerry Developer Challenge. See
>>>>>>>>>> full prize
>>>>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>>>>> _______________________________________________
>>>>>>>>>> gstreamer-devel mailing list
>>>>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>>>> This is your chance to win up to $100,000 in prizes! For a limited
>>>>>>>>> time,
>>>>>>>>> vendors submitting new applications to BlackBerry App World(TM)
>>>>>>>>> will have
>>>>>>>>> the opportunity to enter the BlackBerry Developer Challenge. See
>>>>>>>>> full prize
>>>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>>>> _______________________________________________
>>>>>>>>> gstreamer-devel mailing list
>>>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ------------------------------------------------------------------------------
>>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>>> This is your chance to win up to $100,000 in prizes! For a limited
>>>>>>>> time,
>>>>>>>> vendors submitting new applications to BlackBerry App World(TM) will
>>>>>>>> have
>>>>>>>> the opportunity to enter the BlackBerry Developer Challenge. See
>>>>>>>> full prize
>>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>>> _______________________________________________
>>>>>>>> gstreamer-devel mailing list
>>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Enter the BlackBerry Developer Challenge
>>>>>>> This is your chance to win up to $100,000 in prizes! For a limited
>>>>>>> time,
>>>>>>> vendors submitting new applications to BlackBerry App World(TM) will
>>>>>>> have
>>>>>>> the opportunity to enter the BlackBerry Developer Challenge. See full
>>>>>>> prize
>>>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>>>> _______________________________________________
>>>>>>> gstreamer-devel mailing list
>>>>>>> gstreamer-devel at lists.sourceforge.net
>>>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Enter the BlackBerry Developer Challenge
>>>>> This is your chance to win up to $100,000 in prizes! For a limited
>>>>> time,
>>>>> vendors submitting new applications to BlackBerry App World(TM) will
>>>>> have
>>>>> the opportunity to enter the BlackBerry Developer Challenge. See full
>>>>> prize
>>>>> details at: http://p.sf.net/sfu/Challenge
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Enter the BlackBerry Developer Challenge
>>>> This is your chance to win up to $100,000 in prizes! For a limited time,
>>>> vendors submitting new applications to BlackBerry App World(TM) will
>>>> have
>>>> the opportunity to enter the BlackBerry Developer Challenge. See full
>>>> prize
>>>> details at: http://p.sf.net/sfu/Challenge
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>>
>>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Enter the BlackBerry Developer Challenge
>>> This is your chance to win up to $100,000 in prizes! For a limited time,
>>> vendors submitting new applications to BlackBerry App World(TM) will have
>>> the opportunity to enter the BlackBerry Developer Challenge. See full
>>> prize
>>> details at: http://p.sf.net/sfu/Challenge
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>
>>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Enter the BlackBerry Developer Challenge
>> This is your chance to win up to $100,000 in prizes! For a limited time,
>> vendors submitting new applications to BlackBerry App World(TM) will have
>> the opportunity to enter the BlackBerry Developer Challenge. See full
>> prize
>> details at: http://p.sf.net/sfu/Challenge
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>>
>
>
>
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20100408/94c83e15/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 569 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20100408/94c83e15/attachment.png>

More information about the gstreamer-devel mailing list