[Bug 667595] [0.11] Subtitle segments have zero base

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=667595
  GStreamer | gstreamer (core) | 0.11.x

Mark Nauwelaerts <mnauw> changed:

           What    |Removed                     |Added
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                 CC|                            |mnauw at users.sourceforge.net

--- Comment #5 from Mark Nauwelaerts <mnauw at users.sourceforge.net> 2012-01-10 10:31:20 UTC ---
Still not clear on why something else would be nice to have (what is the
problem to be solved with the current approach, which does seem to work ?)

Would not care much for dummy buffers, so that would come down to event(s) with
varying degree of complexity.  For muxing purposes, it would have to convey
some kind of (start)time, which brings it pretty close to a segment event which
might then as well be re-used.  Semantics also match pretty well since a
segment event does actually convey subsequent data is expected to be within
indicated boundary.

The missing and problematic part in 0.11 afaics is that it would be useful to
(optionally) know that the event concerns a (sparse) update, i.e. like the 0.10
'update' field, which is needed here and there on occasion (and conveniently
ignored/disabled for now while porting e.g. dvdsubdec).  The 'update' field
could be added to the segment event or a reason to come up with a separate
event.

Similarly, either newsegment or (that same) separate event could be used to
arrange for pre-roll in sinks (like proposed 'soft-eos' or whatever as intended
in bug #633700, which did not quite make it through for not so clear or
administrative reasons).

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