[Bug 785216] New: vaapivp8enc bitrate setting works only in certain range

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=785216

Bug ID: 785216
Summary: vaapivp8enc bitrate setting works only in certain
range
Classification: Platform
Product: GStreamer
Version: 1.12.x
OS: Mac OS
Status: NEW
Severity: normal
Priority: Normal
Component: gstreamer-vaapi
Assignee: gstreamer-***@lists.freedesktop.org
Reporter: ***@saepia.net
QA Contact: gstreamer-***@lists.freedesktop.org
CC: ***@gmail.com, ***@igalia.com
GNOME version: ---

I am using GStreamer 1.12.0 on ubuntu zesty, compiled from sources. CPU is
Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz. Here are versions of other,
potentially important components:

LIBVA_VERSION=1.8.2
INTEL_DRIVER_VERSION=5f479acd6d856c13be18321642eac8e9635b25c9
LIBDRM_VERSION=libdrm-2.4.80

I have found out that setting vaapivp8enc's bitrate parameters makes effect
only within range that is approximately 900-13000. Any value below 900 results
in +/- 900 and anything above 20000 results in +/- 13000 kbit/s.

I have created sample pipeline and I have been monitoring traffic using
iptraf-ng. It was done within Docker container, so there was no other traffic
that might interfere with it. For values within that range the actual traffic
was more less equal to bitrate being set. For lower/higher it was adjusted to
900 or 13000.

gst-launch-1.0 videotestsrc is-live=true !
"video/x-raw,width=1280,height=720,framerate=15/1" ! vaapivp8enc bitrate=...
rate-control=2 ! rtpvp8pay ! udpsink host=localhost port=5001

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=785216

Julien Isorce <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

["GStreamer" (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=785216

GStreamer system administrator <***@gstreamer.net> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |OBSOLETE

--- Comment #1 from GStreamer system administrator <***@gstreamer.net> ---
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