[gst-devel] Help with using dshowvideosrc

[Julien Isorce]

Hi,

error 8007048f :
ERROR_DEVICE_NOT_CONNECTED

Well try to use the device-name property, for example:

gst-launch dshowvideosrc device-name="Pinnacle WDM PCTV Video Capture" !
dshowvideosink

Sincerely
Julien

2010/4/9 Kulecz, Walter (JSC-SK)[WYLE INTEG. SCI. & ENG.] <
walter.kulecz-1 at nasa.gov>

> I'm stuck with trying to get dshowvideosrc to work.
>
> gst-launch videotestsrc ! dshowvideosink works as expected.
>
> I've scrounged up an ATI TV Wonder USB HD650 video device and it seems to
> work on my XP notebook, at least with its bundled software, which I used to
> select the  S-video input.
>
>
> But a simple gst-lauch command in an msys window gives:
>
> $ gst-launch dshowvideosrc ! dshowvideosink
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> 0:00:02.062966000   716   00334130 ERROR          dshowvideosrc
> gstdshowvideosrc.cpp:589:gst_dshowvideosrc_change_state: Can't R
>  the directshow capture graph (error=0x8007048f)
> ERROR: pipeline doesn't want to play.
> Setting pipeline to NULL ...
> Freeing pipeline ...
>
>
> At which point I'm stuck.  This is just a proof of principle test, the next
> question, if I can get it to display live video, will be how do I select the
> input source?  The overview of all plugins documentation,
> http://gstreamer.freedesktop.org/documentation/plugins.html doesn't have
> an entry for dshowvideosrc, among others, like dshowvideosink fer instance.
>
> I assume that like v4l2src,  input selection needs to be done
> programmatically since gst-launch can't talk to the interfaces.  In my
> initial tests on Linux I used TVtime to set the video input and then could
> use gst-launch v4l2src ! xvimagesink to verify function.  But then,
> dshowvideosrc could be very different, or perhaps directshow driver doesn't
> retain the input selection across invocations although the ATI player
> software seems to resume where I left it set.
>
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