Pushing images into a gstreamer pipeline

wally bkg wb666greene at gmail.com
Tue Mar 22 07:49:48 PDT 2011

> You realize that bleeding edge will become stable and until you help
> tracking down whats causing the regression for you, the behavior might
> stay as it is in the current PPA releases. Have you filed a bug for the
> issue already?

---------- Forwarded message ----------
> From: Stefan Kost <ensonic at hora-obscura.de>
> To: Discussion of the development of and with GStreamer <
> gstreamer-devel at lists.freedesktop.org>
> Date: Mon, 21 Mar 2011 17:26:57 +0200
> Subject: Re: Pushing images into a gstreamer pipeline (Olivier Aubert)
> On 16.03.2011 23:50, wally bkg wrote:
> >
> >     Subject: Re: Pushing images into a gstreamer pipeline
> >     On Tue, 2011-03-15 at 17:42 -0500, wally bkg wrote:
> >     > Are there any elements to draw lines, circles, etc. into a
> GstBuffer
> >     > to overlay onto a video frame?
> >     The rsvgoverlay element (in recent versions of gst-plugins-bad) can
> do
> >     this.
> >
> >     Olivier
> >
> >
> > Don't see any documentation for it in:
> >
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/ch01.html
> >
> > gst-inspect doesn't show it my 10.04 system which has plugins-bad 0.10.18
> >
> > My attempt at using the Ubuntu 10.04 ppa "current" gstreamer was a
> > quick disaster breaking my most important starting point:
> >
> > gst-launch v4l2src ! xvimagesink
> >
> > Without this working gstreamer is totally useless to me.  Recovery was
> > not pretty :(  So excuse me if I'm a bit gun shy about the bleeding edge.
> >

I tried filing a bug report at the PPA website, but the launchpad "reset
password" Email never came.
I plan to try again later today or tomorrow.

I'm also looking for a place to upload an ~84MB VOB file from a DVD recorder
device that plays with decodebin2 but not a mpegdec pipeline as used by
things like Totem and PiTiVi.  The PiTiVi folks pushed it to gstreamer and
I'm sure an example file would be helpful.  In a nutshell, the issue here is
a VOB file from an "authored DVD" (unencrypted) plays but a "closed" disk
from a commercial DVD Recorder (Toshiba DR420) acts like its only a few
seconds long.  I had planed to do it this weekend from home (since most free
upload/download sites are blocked here) but other life things prevented me
from even checking Email over the weekend.

But to be frank, I'd have a lot more time to help with debugging if I didn't
have to waste so much time stumbling around the gstreamer source code to try
and figure things out for lack of documentation and examples.   IMHO decent
example code is the best documentation.
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