In Ubuntu 18.10 and 19.04 the Libav codec library (additional codecs) package has been updated to libavcodec-extra58. In Ubuntu 16.10, 17.04, 17.10 and 18.04 the Libav codec library (additional codecs) package has been updated to libavcodec-extra57. In Ubuntu 15.10 and 16.04, the Libav codec library (additional codecs) package has been updated to libavcodec-ffmpeg-extra56. In Ubuntu 14.10 and 15.04, the Libav codec library (additional codecs) package has been updated to libavcodec-extra-56. In Ubuntu 14.04, the Libav codec library (additional codecs) package (libavcodec-extra-53) has been updated to libavcodec-extra-54.

The ffmpeg package is still available in Ubuntu 13.10 and earlier releases. Note: The command: ffmpeg -i '10 Make Peace.ape' -acodec libmp3lame -b 256k -id3v2_version 3 '10 Make Peace.mp3' will also do the conversion to mp3 using ffmpeg, but you will get the THIS PROGRAM IS DEPRECATED error message. Then run the command: avconv -i 'input.ape' -id3v2_version 3 -codec:a libmp3lame -b 256k 'output.mp3'

First change directory using the cd command to the same directory where your input.ape file to be converted is located. This example uses 256kbps bitrate for the output.mp3 file and id3v2_version 3 for the metadata tags. avconv, like ffmpeg, is run from the terminal. The avconv program is provided by the libav-tools package from the Ubuntu Software Center. This is the same error message that you got in your question.

This program is only provided for compatibility and will be removed in a future release. mp3 using ffmpeg and you will get the following message: *** THIS PROGRAM IS DEPRECATED *** First make sure that you have the libavcodec-extra-53 package for encoding to mp3 installed.

Ffmpeg convert to mp3