GES: Questions related to the new "gessrc" element

[Philippe Normand]

On Thu, 2019-08-01 at 09:00 -0700, David Ing wrote:
> I am famliar with the GES Launch command which loads a timeline file
> in
> xges format.  The syntax is something like this:
> 
> ges-launch-1.0 --load=MY_FILE.xges
> 
> 
> My first question is:
> 
> Now I am wondering if there is a similar kind of command using GST
> Launch (
> *gst*-launch-1.0).  Specifically I am wondering if this is now
> possible via
> the new "gessrc" element.
> 
> 
> My second question is:
> 
> I am wondering how the "gessrc" element is supposed to be used.
> 
> The reason I ask is:  I have some C++ code which builds a GstPipeline
> which
> contains a GESTimeline.  Now I wonder if it is better to put a GESSrc
> inside of the GstPipeline (where the GESSrc contains the
> GESTimeline).

gessrc seems to fit with your use-case indeed.
Set the playbin uri to ges:// and in the source-setup signal handler
set the timeline property on the element, as demonstrated in this C
example:

https://gitlab.freedesktop.org/gstreamer/gst-editing-services/blob/master/examples/c/gessrc.c

Philippe

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