[Bug 752802] avviddec: Sends incorrect CAPS event before the correct one

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Tue Aug 11 08:23:14 PDT 2015


https://bugzilla.gnome.org/show_bug.cgi?id=752802

--- Comment #21 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
(In reply to Nicolas Dufresne (stormer) from comment #20)

> > What are the chances ffmpeg people will fix up to their API in the longer
> > run?
> 
> None, their argument is strong, they start decoding as soon as they can
> figure-out the allocation size. Waiting longer make no sense and would
> increase delays. GStreamer does not have this distinction (allocation size
> vs final caps). I'm starting to agree this is slightly a GStreamer
> limitation to confuse the allocation information with the final caps.

The caps in the ALLOCATION query are the allocation sizes, the caps in the CAPS
event/query are the display/render sizes. It's all there :)

The main problem is that it's not well supported to have ALLOCATION query
before CAPS event.

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