libavcodec-extra-53 software package provides Libav codec library (additional codecs), you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libavcodec-extra-53
libavcodec-extra-53 is installed in your system.
Make ensure the libavcodec-extra-53 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libavcodec-extra-53 *
You will get with libavcodec-extra-53 package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Libraries |
| Package | libavcodec-extra-53 |
| Version | 6:0.8.18-0+deb7u1 [amd64, arme |
| Description | Libav codec library (additional codecs) |
| Sub Section | libs |