[gstreamer-bugs] [Bug 640610] basesink: QoS events are wrong in live pipelines

[GStreamer (bugzilla.gnome.o. <bug...@gn...>]

https://bugzilla.gnome.org/show_bug.cgi?id=640610
  GStreamer | gstreamer (core) | git

--- Comment #6 from Felipe Contreras <fel...@gm...> 2011-01-26 18:23:59 UTC ---
And how would this "compute latency" be calculated. Should each encoder/decoder
be aware how much maximum latency the algorithm would take for the specified
settings?

The only way to find that out is to actually measure different configurations,
make some guesses and write some heuristics. Do we expect everyone writing
codecs to do that?

People would either put random values, or calculate this latency on-the-fly.

And if this latency is calculated on-the-fly, as Edward mentioned, there might
be spikes, and which point you would be dropping buffers unnecessarily.

Supposing an extreme case where the "compute latency" is calculated by perfect
heuristics based on profile, level, framesize, etc. and there's a very low
framerate. Chances are this "compute latency" would be way below the real limit
(second / fps). If something else in the system slows things down we again
might end up dropping buffers unnecessarily.

My proposed patch doesn't have any of those issues.

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