[Bug 703632] GStreamer: unable to query position of stream

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=703632
  GStreamer | gstreamer (core) | unspecified

--- Comment #2 from Antonio Trande <anto.trande at gmail.com> 2013-07-04 21:24:07 UTC ---
(In reply to comment #1)
> Why do you think this is a bug in GStreamer and not qgifer?

In fact, I didn't know if it was a problem in QGifer, opencv or GStreamer. :)
Please, see http://code.opencv.org/issues/3127

> 
> Note that this is using the old 0.10 version of GStreamer which is no longer
> maintained (I can tell by the function signature of
> gst_element_query_duration()).
> 
> Most demuxers will not support querying in GST_FORMAT_DEFAULT, try
> GST_FORMAT_TIME. I don't know if ogg supports this or not.
> 
> The warning string is buggy as well, it says 'position' instead of 'duration'.
> 

That code is in opencv.

> A query like this might also fail if the pipeline is not prerolled yet. Is it
> prerolled here?

Sorry, I don't know what's it means.

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