[Bug 721701] Performance penalty for videoscale and I420 to BGRA for 1.2.0-1.2.2 and common ubuntu

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=721701
  GStreamer | gst-plugins-base | 1.2.2

--- Comment #6 from Peter Maersk-Moller <pmaersk at gmail.com> 2014-01-08 13:05:02 UTC ---
It appear i was a bit hasty in specifying 1.2.0 as introducing a performance
penalty. Looking into it, version 1.2.0 only do so partly. The following
pipeline for 1.2.0 consumes about 53%, which is roughly half of 1.2.2, but
still nearly twice as much as for 0.10.36:

  $ /usr/local/bin/gst-launch-1.0 -v filesrc location=./video1280x720.mp4
do-timestamp=true ! decodebin name=decoder ! videoconvert ! 'video/x-raw,
format=(string)BGRA, width=(int)1280, height=(int)720' ! queue ! fakesink
silent=true sync=true

However, the following pipeline only consumes roughly 25-29% which is only a
little bit more than for 0.10.36

  $ /usr/local/bin/gst-launch-1.0 -v filesrc location=./video1024x576.mp4
do-timestamp=true ! decodebin name=decoder ! videoscale ! videoconvert !
'video/x-raw, format=(string)BGRA, width=(int)1280, height=(int)720' ! queue !
fakesink silent=true sync=true

Best regards

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