[Bug 785712] New: FEI: Implement VAEntryPointFEI based h264 encoder
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Wed Aug 2 00:43:35 UTC 2017
https://bugzilla.gnome.org/show_bug.cgi?id=785712
Bug ID: 785712
Summary: FEI: Implement VAEntryPointFEI based h264 encoder
Classification: Platform
Product: GStreamer
Version: git master
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: gstreamer-vaapi
Assignee: gstreamer-bugs at lists.freedesktop.org
Reporter: bsreerenj at gmail.com
QA Contact: gstreamer-bugs at lists.freedesktop.org
CC: bsreerenj at gmail.com, vjaquez at igalia.com
GNOME version: ---
FEI(Flexible Encoding Infrastructure) is an extension to VA API which allows
applications to have more control over different phases of encoding and trade
off quality for speed with their on IPs.
More Details here: https://bugzilla.gnome.org/show_bug.cgi?id=784667
This bug report is to track the development of a new element "vaapih264feienc"
which will be using VAEntryPointFEI for H264 encode.
Why a new element for FEI?:
FEI is useful in very advanced applications. I would say, it makes sense to use
FEI, If we implement an encoder itself(not just the plugin integration) which
is something we haven't experimented with GStreamer yet (I believe).
Example use cases:
--write custom BitRateControl algorithms,
--tweak/alter the motion vector and macroblock prediction per macroblock basis
for each frame encode.
--analyze the vme distortion and make more intelligent prediction decisions
Adding all these into existing vaapih264enc will make the code too complicated
and it could be difficult to debug.
Another point is that FEI is still under heavy development and only supported
in Intel SKL platform for now. So better keep a separate code base for the new
encoder and may be in future we can merge with vaapih264encoder(if needed).
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