[gst-devel] Start recording from a webcam already playing

[Farkas Levente]

On Mon, Feb 9, 2009 at 11:05 PM, René Stadler <mail at renestadler.de> wrote:

> Marc wrote:
> > Hi,
> >
> > I am trying to build an application more or less like Cheese
> > (http://projects.gnome.org/cheese/). However I would like to switch from
> > just showing the webcam to a recording state "smoothly" when the user
> > press the record button.
> >
> > So far I have tried the following approaches without succes:
> >
> >    1. Changing location property of filesink while playing (from
> >       /dev/null to a real path). This is not possible (filesink tells me
> >       so).
> >    2. Open 2 different pipelines both of them pointing to the same
> >       v4l2src (no success since only one pipeline can access the webcam
> >       at once).
> >
> > Since these approaches were not working I tried to set the pipeline to
> > STATE_NULL, change the location of the filesink, and then set the
> > pipeline to STATE_PLAYING again. However, when setting the pipeline to
> > STATE_NULL, no STATE_CHANGE event is thrown. Is this the expected
> behavior ?
> >
> > Any ideas ? Can the smooth "play-to-record" be accomplished with
> GStreamer ?
> >
> > Thank you
> > PD. For the record: I am programming in Python and the pipeline I am
> > trying to manage is the following:
> >
> > gst-launch-0.10 v4l2src ! tee name=videoout ! queue ! videorate !
> > video/x-raw-yuv,fps=15 ! queue ! theoraenc quality=60 ! queue ! muxout.
> > pulsesrc ! audio/x-raw-int,rate=22000,channels=1,width=16 ! queue !
> > audioconvert ! vorbisenc ! queue ! muxout. oggmux name=muxout ! filesink
> > location=test.ogg videoout. ! queue ! ffmpegcolorspace ! ximagesink
> >
> > --
> > Marc S.
> >
>
> I added an element called "camerabin" to gst-plugins-bad today, I think it
> is
> exactly what you are looking for.


can you tell me a little bit more about this bin? any docs or usage?
thanks.


-- 
 Levente                               "Si vis pacem para bellum!"
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