[Bug 1698282] Re: Totem uses dramatically higher CPU than any other video player

[Daniel van Vugt]

** Bug watch added: GNOME Bug Tracker #759209
   https://bugzilla.gnome.org/show_bug.cgi?id=759209

** Also affects: clutter-gst via
   https://bugzilla.gnome.org/show_bug.cgi?id=759209
   Importance: Unknown
       Status: Unknown

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Title:
  Totem uses dramatically higher CPU than any other video player

Status in Clutter GStreamer Bindings:
  Unknown
Status in Clutter GTK:
  Confirmed
Status in Gstreamer1.0:
  Fix Released
Status in clutter-1.0 package in Ubuntu:
  Confirmed
Status in clutter-gst-3.0 package in Ubuntu:
  Confirmed
Status in clutter-gtk package in Ubuntu:
  Fix Released
Status in totem package in Ubuntu:
  Fix Released

Bug description:
  Totem uses dramatically higher CPU than any other video player.

  Example 1: software playback under Gnome Shell Wayland:

  totem: 120% (but drops to 80% in Unity7)
  mplayer: 40%
  vlc: 40%
  [all are using ffmpeg for decoding]

  Example 2: hardware-accelerated playback under Gnome Shell Xorg:

  totem: 11%
  gst-play-1.0: 3%
  [both are using gstreamer-vaapi for decoding]

  Since the decoding libraries are theoretically the same it sounds like
  totem's performance problems might be in its rendering path.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: libgstreamer1.0-0 1.12.0-2
  ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
  Uname: Linux 4.10.0-22-generic x86_64
  ApportVersion: 2.20.5-0ubuntu4
  Architecture: amd64
  Date: Fri Jun 16 12:57:11 2017
  InstallationDate: Installed on 2017-05-03 (44 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170502)
  LogAlsaMixer: Error: command ['/usr/bin/amixer'] failed with exit code 1: amixer: Mixer attach default error: No such file or directory
  SourcePackage: gstreamer1.0
  UpgradeStatus: No upgrade log present (probably fresh install)

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