[Bug 740322] Proposal of smart-properties

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=740322

--- Comment #3 from Tim-Philipp Müller <t.i.m at zen.co.uk> ---
Couple of comments:

 - there's GstContext now, I think it could be used in similar ways

 - there are GST_SEEK_FLAG_TRICKMODE, GST_SEEK_FLAG_TRICKMODE_KEY_UNITS
   and GST_SEEK_FLAG_TRICKMODE_NO_AUDIO seek flags now

 - also see bug #578933 for a generic "deep-element-added" signal
   or an "element-setup" signal on playbin/decodebin

 - also see bug #696952 for the ability to set up the 'initial seek'

> we have to know exact element name of them if we use childproxy.

 - This is surely something that could be fixed in GstChildProxy ?


So in summary, I think this can probably be done - either generically via
GstContext (and adding custom code in your demuxer, just like you would with
your proposal, if I understand correctly) or for your specific by setting up
the initial seek somehow with trick modes so that only I-frames are output on
the video pads. Or perhaps GstChildProxy should be improved to not require you
to know the exact name.

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