[gstreamer-bugs] [Bug 633294] deinterlace breaks some DVD menu scenarios

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Fri Nov 5 03:05:34 PDT 2010


https://bugzilla.gnome.org/show_bug.cgi?id=633294
  GStreamer | gst-plugins-good | git

--- Comment #9 from Robert Swain <robert.swain at gmail.com> 2010-11-05 10:05:32 UTC ---
I've implemented the above in a field analysis/telecine branch on which I am
working. With vanilla master and my branch, I can't reproduce the issue apart
from one time with a sample obtained from Jan.

With current releases available in Fedora 14, I can reproduce easily when using
any deinterlace method with fields_required > 1 (i.e. the default greedyh needs
4, vfir needs 2, but not linear as that needs only 1).

After some discussion and me thinking it was a QoS issue, Jan suggested that
perhaps the MPEG decoder could re-send the last buffer with some 'no qos on
this buffer' flag. Unfortunately we're out of buffer flags but perhaps we could
send it with discont and make the sinks ignore QoS for discont buffers or
something horrible like that. :)

However, I have tested using xvimagesink with the F14 packages with qos=false
and I still see the issue, so it's not a QoS problem. I do think it's very
strange that I can't reproduce it with vanilla git master of everything though
while Jan can every time.

As this is no longer something I need to implement for my current task, I'm
inclined to down-prioritise it for my personal hacking right now and revisit it
once I've got some other things sorted. Unless someone can figure out what the
issue it so I can hack up a fix (unless they beat me to it :)).

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