Missing plugin: gstreamer

Running totem:

$ totem file.avi
** Message: Missing plugin: gstreamer|0.10|totem|Decoder DivX MPEG-4 versione 5|decoder-video/x-divx, divxversion=(int)5 (Decoder DivX MPEG-4 versione 5)

The search plugin dialog finds nothing.

ii gstreamer-tools 0.10.29-1 Tools for use with GStreamer
ii gstreamer0.10-alsa 0.10.29-4 GStreamer plugin for ALSA
ii gstreamer0.10-ffmpeg 0.10.10-1 FFmpeg plugin for GStreamer
ii gstreamer0.10-fluendo-mp3 0.10.14.debian-1 Fluendo mp3 decoder GStreamer plugin
ii gstreamer0.10-fluendo-mpegdemux 0.10.15-1 GStreamer plugin for demuxing of MPEG2 strea
ii gstreamer0.10-fluendo-mpegmux 0.10.4-1 GStreamer plugin for muxing of MPEG2 TS stre
ii gstreamer0.10-gnonlin 0.10.15-1 non-linear editing module for GStreamer
ii gstreamer0.10-nice 0.0.12-1 ICE library (GStreamer plugin)
ii gstreamer0.10-plugins-bad-multiverse 0.10.18-0ubuntu1 GStreamer plugins from the "bad" set (Multiv
ii gstreamer0.10-plugins-base 0.10.29-4 GStreamer plugins from the "base" set
ii gstreamer0.10-plugins-base-apps 0.10.29-4 GStreamer helper programs from the "base" se
ii gstreamer0.10-plugins-good 0.10.23-1ubuntu1 GStreamer plugins from the "good" set
ii gstreamer0.10-plugins-ugly 0.10.14.3-1 GStreamer plugins from the "ugly" set
ii gstreamer0.10-plugins-ugly-multiverse 0.10.14-0ubuntu1 GStreamer plugins from the "ugly" set (Multi
ii gstreamer0.10-pulseaudio 0.10.23-1ubuntu1 GStreamer plugin for PulseAudio
ii gstreamer0.10-tools 0.10.29-1 Tools for use with GStreamer
ii gstreamer0.10-x 0.10.29-4 GStreamer plugins for X11 and Pango

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libgstreamer0.10-0 0.10.29-1
ProcVersionSignature: Ubuntu 2.6.34-5.13-generic 2.6.34
Uname: Linux 2.6.34-5-generic x86_64
Architecture: amd64
Date: Sat Jun 5 12:26:38 2010
EcryptfsInUse: Yes
ProcEnviron:
 PATH=(custom, user)
 LANG=it_IT.utf8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10