[gstreamer-bugs] [Bug 415754] New GstMuxer class

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gstreamer (core) | Ver: HEAD CVS




------- Comment #12 from Mark Nauwelaerts  2007-05-15 15:17 UTC -------
OK, it's been a bit longer than I expected, but I do now have some results.
Specifically, it involves updates and fixes to GstCollectPads and GstMuxer that
will be attached (replacing previous patches), along with a (dvd) subtitle
overlay element (to be housed in -bad) that makes use of GstMuxer, and a patch
for matroskamux to support muxing subtitles.

It has all been tested pretty well, be it either through some live playing
(with a simple navseek based pipeline), or transcoding e.g. from dvd into mkv.
Moreover, it all actually works well ;-)  (if also bug #438610 is taken into
account).  In fact, the only (remaining) problems ever experienced are:
- some stalling after a seek during playback, which is confirmed due to
dvddemux failing to send newsegment updates for subtitles (so the stalling
can't be helped in such a case)
- most subtitle packets are split across 2-3 buffers and dvddemux only sends
the first fragment with a valid timestamp, so matroskamux can't be blamed for
dropping the subsequent fragments (of course ending up with a corrupted
subtitle stream) (will probably come up with a dvdsubparse element or so to
handle this)

Well, enough moaning about dvddemux, back to GstMuxer.
Unless there are objections, next steps (in next days/weeks) will be:
- renaming GstMuxer to GstMuxPads; because GstCollectPads is a parent after
all.
If one were to come up with a base class for a Muxer then Gst(Base)Mux(er) or  
 so would be a good name for it (see also above).  This would then be confusing
and conflicting with the current GstMuxer naming.  Hence, GstMuxPads.
- perhaps eliminate some of the duplicate (copy-and-paste) documentation for
functions by references to the corresponding GstCollectPads counterpart

As also said above, any comments etc are welcome.  It's more than a few lines,
but the results should be worth it.


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