[gstreamer-bugs] [Bug 600929] [kate] tiger element doesn't handle segments and text/video synchronization properly

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Sun Dec 19 06:08:44 PST 2010

  GStreamer | gst-plugins-bad | git

Vincent Penquerc'h <vincent.penquerch> changed:

           What    |Removed                     |Added
                 CC|                            |vincent.penquerch at collabora
                   |                            |.co.uk

--- Comment #27 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2010-12-19 14:08:38 UTC ---
I've been looking at this again, and I'm stumped by this:

WARNING: from element
Internal GStreamer error: negotiation problem.  Please file a bug at
Additional debug info:
gstsubtitleoverlay.c(709): _pad_blocked_cb ():
Subtitle sink is blocked but we have no subtitle caps

Looking at the logs, I do set the source pad caps to something simple (either
text/plain or video/x-dvd-subpicture) when the first packet is received. This
works fine as far as I can tell.
Later, subtitleoverlay requests negotiated caps and gets NULL, and moans with
the error above. I just can't find how to stop this from happening. I suspect
that, since subtitleoverlay gets the caps from the input selector, the caps
from the katedec source aren't getting propagated to that, somehow.
I've tried adding a getcaps and setcaps function to katedec, but that doesn't
help. Either subtitleoverlay sees NULL, or the template caps (which are
Any idea just what I might be doing wrong ?


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