GStreamer-devel

how to use dshowvideosrc

Classic

List

Threaded

12 messages Options

acolubri

how to use dshowvideosrc

Hello,

I just insalled the latest version of the binary packages for win32
(gstreamer 0.10.17, gst-plugins-base 0.10.17, gst-plugins-good 0.10.7,
gst-plugins-bad 0.10.6, gst-plugins-ugly 0.10.7).

I'd like to know how to use the direct show wrapper to, for instance,
get the input of a webcam installed in windows. I started trying
something like this:

gst-launch-0.10 dshowvideosrc ! directdrawsink

but gives me this error:

WARNING: erroneous pipeline: could not link dshowvideosrc0 to
directdrawsink0

My installation of gstremer is fine, because I'm able to play video
files, get the output of videotestsrc to directdrawsink, etc.

I imagine that I have to specify somehow the directshow graph I want to
use in dshowvideosrc, right? How I do that?

Many thanks,
Andres

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Ole André Vadla Ravnås

Re: how to use dshowvideosrc

Hi,

On Thu, Mar 13, 2008 at 1:29 AM, Andres Colubri
<[hidden email]> wrote:

> Hello,
>
> I just insalled the latest version of the binary packages for win32
> (gstreamer 0.10.17, gst-plugins-base 0.10.17, gst-plugins-good 0.10.7,
> gst-plugins-bad 0.10.6, gst-plugins-ugly 0.10.7).
>
> I'd like to know how to use the direct show wrapper to, for instance,
> get the input of a webcam installed in windows. I started trying
> something like this:
>
> gst-launch-0.10 dshowvideosrc ! directdrawsink

Try:
gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink

Cheers,
Ole André

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

acolubri

Re: how to use dshowvideosrc

I got a similar error:

C:\Users\Andres>gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace !
directdrawsink
WARNING: erroneous pipeline: could not link dshowvideosrc0 to ffmpegcsp0

I still think I need to specify the direct show graph...
> Try:
> gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink
>
> Cheers,
> Ole Andr

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

acolubri

Re: how to use dshowvideosrc

Ok, I see. The outputs of my webcam are YUY2 :-(

[hidden email] wrote:

> Hi,
>
> What is the ouputs video format of your webcam ?
> Actually the last dshowvideosrc from cvs only supports RGB24, I420, and
> Digital Video (and only for preffered video sizes ad framerate).
> Maybe your webcam's ouput is RGB32. You can see capabilities with graphedit.
> (you never need to specify a dshwo graph, it is the dshowvideosrc's job)
> Dshowvideosrc will supports more video format in next release. Moreover
> you will be able to use other video size and framerate than the preferred,
> for each format in next release)
>
> Julien
>
>
>
>> I got a similar error:
>>
>> C:\Users\Andres>gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace !
>> directdrawsink
>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to ffmpegcsp0
>>
>> I still think I need to specify the direct show graph...
>>
>>> Try:
>>> gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink
>>>
>>> Cheers,
>>> Ole Andr
>>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by: Microsoft
>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>>
>
>
>

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Julien Isorce

Re: how to use dshowvideosrc

In reply to this post by acolubri

Hi,

I am sure you can wait next releases so I join to this email the dll that contains the features I told you.
The job is done since 3 weeks but no admin are available to update cvs with my files ( http://bugzilla.gnome.org/show_bug.cgi?id=517203 )
With this dll you can use all the video sizes and framerate supported by your video capture device. (and now dshowvideosrc can accept YUY2 and UYVY)

Sincerely,

Julien

> Ok, I see. The outputs of my webcam are YUY2 :-(
>
> [hidden email] wrote:
>> Hi,
>>
>> What is the ouputs video format of your webcam ?
>> Actually the last dshowvideosrc from cvs only supports RGB24, I420, and
>> Digital Video (and only for preffered video sizes ad framerate).
>> Maybe your webcam's ouput is RGB32. You can see capabilities with
>> graphedit.
>> (you never need to specify a dshwo graph, it is the dshowvideosrc's job)
>> Dshowvideosrc will supports more video format in next release. Moreover
>> you will be able to use other video size and framerate than the
>> preferred,
>> for each format in next release)
>>
>> Julien
>>
>>
>>
>>> I got a similar error:
>>>
>>> C:\Users\Andres>gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace !
>>> directdrawsink
>>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to
>>> ffmpegcsp0
>>>
>>> I still think I need to specify the direct show graph...
>>>
>>>> Try:
>>>> gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink
>>>>
>>>> Cheers,
>>>> Ole Andr
>>>>
>>> -------------------------------------------------------------------------
>>> This SF.net email is sponsored by: Microsoft
>>> Defy all challenges. Microsoft(R) Visual Studio 2008.
>>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> [hidden email]
>>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>>
>>>
>>
>>
>>
>
>

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

libgstdshowsrcwrapper.dll (60K) Download Attachment

acolubri

Re: how to use dshowvideosrc

Thanks a lot! It works like a charm now!

Just as a side question (for now): What is the status of the quicktime
wrapper for OSX? Is it fully functional?

Andres

Julien Isorce wrote:

> Hi,
>
> I am sure you can wait next releases so I join to this email the dll
> that contains the features I told you.
> The job is done since 3 weeks but no admin are available to update cvs
> with my files ( http://bugzilla.gnome.org/show_bug.cgi?id=517203 )
> With this dll you can use all the video sizes and framerate supported
> by your video capture device. (and now dshowvideosrc can accept YUY2
> and UYVY)
>
> Sincerely,
>
> Julien
>
>
>
> > Ok, I see. The outputs of my webcam are YUY2 :-(
> >
> > [hidden email]
> <mailto:[hidden email]> wrote:
> >> Hi,
> >>
> >> What is the ouputs video format of your webcam ?
> >> Actually the last dshowvideosrc from cvs only supports RGB24, I420, and
> >> Digital Video (and only for preffered video sizes ad framerate).
> >> Maybe your webcam's ouput is RGB32. You can see capabilities with
> >> graphedit.
> >> (you never need to specify a dshwo graph, it is the dshowvideosrc's
> job)
> >> Dshowvideosrc will supports more video format in next release. Moreover
> >> you will be able to use other video size and framerate than the
> >> preferred,
> >> for each format in next release)
> >>
> >> Julien
> >>
> >>
> >>
> >>> I got a similar error:
> >>>
> >>> C:\Users\Andres>gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace !
> >>> directdrawsink
> >>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to
> >>> ffmpegcsp0
> >>>
> >>> I still think I need to specify the direct show graph...
> >>>
> >>>> Try:
> >>>> gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink
> >>>>
> >>>> Cheers,
> >>>> Ole Andr
> >>>>
> >>>
> -------------------------------------------------------------------------
> >>> This SF.net email is sponsored by: Microsoft
> >>> Defy all challenges. Microsoft(R) Visual Studio 2008.
> >>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> >>> _______________________________________________
> >>> gstreamer-devel mailing list
> >>> [hidden email]
> <mailto:[hidden email]>
> >>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >>>
> >>>
> >>
> >>
> >>
> >
> >
>
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> ------------------------------------------------------------------------
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>

Edward Hervey

Re: how to use dshowvideosrc

Administrator

Hi,

I just tried it yesterday, works fine (at least for mp3).

Edward

On Thu, 2008-03-13 at 18:56 -0700, Andres Colubri wrote:

> Thanks a lot! It works like a charm now!
>
> Just as a side question (for now): What is the status of the quicktime
> wrapper for OSX? Is it fully functional?
>
> Andres
>
> Julien Isorce wrote:
> > Hi,
> >
> > I am sure you can wait next releases so I join to this email the dll
> > that contains the features I told you.
> > The job is done since 3 weeks but no admin are available to update cvs
> > with my files ( http://bugzilla.gnome.org/show_bug.cgi?id=517203 )
> > With this dll you can use all the video sizes and framerate supported
> > by your video capture device. (and now dshowvideosrc can accept YUY2
> > and UYVY)
> >
> > Sincerely,
> >
> > Julien
> >
> >
> >
> > > Ok, I see. The outputs of my webcam are YUY2 :-(
> > >
> > > [hidden email]
> > <mailto:[hidden email]> wrote:
> > >> Hi,
> > >>
> > >> What is the ouputs video format of your webcam ?
> > >> Actually the last dshowvideosrc from cvs only supports RGB24, I420, and
> > >> Digital Video (and only for preffered video sizes ad framerate).
> > >> Maybe your webcam's ouput is RGB32. You can see capabilities with
> > >> graphedit.
> > >> (you never need to specify a dshwo graph, it is the dshowvideosrc's
> > job)
> > >> Dshowvideosrc will supports more video format in next release. Moreover
> > >> you will be able to use other video size and framerate than the
> > >> preferred,
> > >> for each format in next release)
> > >>
> > >> Julien
> > >>
> > >>
> > >>
> > >>> I got a similar error:
> > >>>
> > >>> C:\Users\Andres>gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace !
> > >>> directdrawsink
> > >>> WARNING: erroneous pipeline: could not link dshowvideosrc0 to
> > >>> ffmpegcsp0
> > >>>
> > >>> I still think I need to specify the direct show graph...
> > >>>
> > >>>> Try:
> > >>>> gst-launch-0.10 -v dshowvideosrc ! ffmpegcolorspace ! directdrawsink
> > >>>>
> > >>>> Cheers,
> > >>>> Ole Andr
> > >>>>
> > >>>
> > -------------------------------------------------------------------------
> > >>> This SF.net email is sponsored by: Microsoft
> > >>> Defy all challenges. Microsoft(R) Visual Studio 2008.
> > >>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > >>> _______________________________________________
> > >>> gstreamer-devel mailing list
> > >>> [hidden email]
> > <mailto:[hidden email]>
> > >>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> > >>>
> > >>>
> > >>
> > >>
> > >>
> > >
> > >
> >
> > ------------------------------------------------------------------------
> >
> > -------------------------------------------------------------------------
> > This SF.net email is sponsored by: Microsoft
> > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

acolubri

Re: how to use dshowvideosrc

In reply to this post by Julien Isorce

Hello,

Wouldn't be a good idea to have the function
gst_dshowvideosrc_get_device_name_values exposed in the header file
gstdshowvidesrc.h?
In this way, it would be possible to query the available directshow
capture devices from the program (without having to link dshow directly
from there,
since all the dshow stuff is resolved inside the wrapper).

Thanks,
Andres

Julien Isorce wrote:

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Julien PUYDT

Re: how to use dshowvideosrc

Andres Colubri a écrit :
> Wouldn't be a good idea to have the function
> gst_dshowvideosrc_get_device_name_values exposed in the header file
> gstdshowvidesrc.h?
> In this way, it would be possible to query the available directshow
> capture devices from the program (without having to link dshow directly
> from there,
> since all the dshow stuff is resolved inside the wrapper).

May I suggest a GstPropertyProbe would be even better?

Snark on #ekiga

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

michael smith-6-3

Re: how to use dshowvideosrc

In reply to this post by acolubri

On Sun, Jul 27, 2008 at 5:49 PM, Andres Colubri
<[hidden email]> wrote:
> Hello,
>
> Wouldn't be a good idea to have the function
> gst_dshowvideosrc_get_device_name_values exposed in the header file
> gstdshowvidesrc.h?
> In this way, it would be possible to query the available directshow
> capture devices from the program (without having to link dshow directly
> from there,
> since all the dshow stuff is resolved inside the wrapper).

gstdshowvideosrc.h is not a public header (no plugin headers are
public, in fact), so an application shouldn't ever be using them. So
that wouldn't help at all - the function isn't exported from the dll
either.

GStreamer has appropriate APIs (the property-probe stuff) that this
plugin could implement to allow applications to query things like
this.

I also want to deprecate the libgstdshow code; it's poor quality and
doesn't implement sensible APIs for plugins to use.

Mike

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

acolubri

Re: how to use dshowvideosrc

>> Wouldn't be a good idea to have the function
>> gst_dshowvideosrc_get_device_name_values exposed in the header file
>> gstdshowvidesrc.h?
>> In this way, it would be possible to query the available directshow
>> capture devices from the program (without having to link dshow directly
>> from there,
>> since all the dshow stuff is resolved inside the wrapper).
>>
>
> gstdshowvideosrc.h is not a public header (no plugin headers are
> public, in fact), so an application shouldn't ever be using them. So
> that wouldn't help at all - the function isn't exported from the dll
> either.
>
> GStreamer has appropriate APIs (the property-probe stuff) that this
> plugin could implement to allow applications to query things like
> this.
>
>

Thanks for this information!

> I also want to deprecate the libgstdshow code; it's poor quality and
> doesn't implement sensible APIs for plugins to use.
>
So, this means that the dshowvideosrc plugin will go unmaintained, or
that you are planning to update/change the source code?

Thanks,
Andres

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

michael smith-6-3

Re: how to use dshowvideosrc

On Mon, Jul 28, 2008 at 12:24 PM, Andres Colubri
<[hidden email]> wrote:
>
>> I also want to deprecate the libgstdshow code; it's poor quality and
>> doesn't implement sensible APIs for plugins to use.
>>
> So, this means that the dshowvideosrc plugin will go unmaintained, or
> that you are planning to update/change the source code?

I have no plans to do anything with dshowvideosrc; I was merely giving
some advice for those who might be interested in hacking on it or
maintaining it.

Mike

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel