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

[GStreamer (bugzilla.gnome.org)]

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

Edward Hervey <bilboed> changed:

           What    |Removed                     |Added
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                 CC|                            |bilboed at gmail.com

--- Comment #1 from Edward Hervey <bilboed at gmail.com> 2011-01-26 10:37:50 UTC ---
Comments regarding the first pipeline:
* It's just above 1.0 because videotestsrc doesn't report the image creation
time (compute latency).
* For a live pipeline of both consumers and produces (once you take into
account latency) the ideal target is indeed 1.0. 1.0 means the buffers are
always arriving "on-time" in the sinks (not too early, not too late).
* If videotestsrc was to take into account the average compute latency (after
some buffers) and report that you'd end up with a perfect 1.0

... But you don't want to report that compute latency ! If you have a cpu usage
spike all of a sudden, you *want* to drop to catch up. If you start reporting
the cpu usage as latency... you'll never drop :)

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