[Bug 737427] appsink: Can't influence allocation query to satisfy user needs

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=737427

--- Comment #17 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> ---
Is there any metric that would justify allocating more (performance, or a logic
that would rationalise this) ? My perspective so far is that the pipeline
should report their needs and appsink *is* the problem. Other elements have
been fixed (like videorate). Appsink/appsrc disable everything allocation query
related (not just choosing the number of buffers).

By the way, it was already agreed that a queue-size property (in fact
min-queue-size), would be re-added at least to v4l2src. Patches are welcome.
Increasing that default is a matter of taste. An analogy is the encoder, one
could say the default should be good for VOIP, other may pretend it should be
good for films and local playback. It's the same, except that saving memory can
benefit both embedded and desktop world.

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