sudo apt-get install libavcodec-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  acpi openscenegraph
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  libavcodec53 libavutil-dev libavutil51
Suggested packages:
  libgsm1-dev libschroedinger-dev libtheora-dev
The following packages will be REMOVED:
  libavcodec-extra-53 libavutil-extra-51
The following NEW packages will be installed:
  libavcodec-dev libavcodec53 libavutil-dev libavutil51
0 upgraded, 4 newly installed, 2 to remove and 0 not upgraded.
Need to get 0 B/6,794 kB of archives.
After this operation, 10.7 MB of additional disk space will be used.
Do you want to continue [Y/n]? n
Abort.