Not possible to install libavformat-dev in Jaunty because of unmet dependencies

[Christoph Langner]

When i try to install libavformat-dev I get the following error

$ sudo apt-get install libavformat-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  libavformat-dev: Depends: libavcodec-dev (= 3:0.svn20090303-1ubuntu6) but it is not going to be installed
E: Broken packages

ProblemType: Bug
Architecture: amd64
Dependencies:

DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: libavformat-dev None [modified: /var/lib/dpkg/info/libavformat-dev.list]
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ffmpeg-debian
Uname: Linux 2.6.28-11-generic x86_64
UnreportableReason: Das Paket stammt nicht von Ubuntu.

[bojo42 (bojo42)]

hi christoph,
do you have some ffmpeg unstripped packages installed? in that case you are affected by bug #312898 and we could mark this one as a duplicate.
grüße ;)
bojo42

[Christoph Langner (chrissss)]

Yep, it's a duplicate...

$ dpkg -l *unstripped* | grep ii
ii libavcodec-unstripped-52 3:0.svn20090303-1ubuntu2+unstripped1 ffmpeg codec library
ii libavutil-unstripped-49 3:0.svn20090303-1ubuntu2+unstripped1 ffmpeg utility library

Thanks for the hint.