Unknown encoder ‘libx264’

If you encounter a problem similar to the following, where you’re missing the libx264 codec try this solution.

avconv -r 10 -i image%06d.jpg -r 10 -vcodec libx264 -crf 20 -g 15 timelapse1.mp4

avconv version 0.8.6-6:0.8.6-0ubuntu0.12.10.1, Copyright (c) 2000-2013 the Libav developers
built on Apr 2 2013 17:02:16 with gcc 4.7.2
Input #0, image2, from 'image%06d.jpg':
Duration: 00:02:21.20, start: 0.000000, bitrate: N/A
Stream #0.0: Video: mjpeg, yuvj420p, 2592x1944, 10 fps, 10 tbr, 10 tbn, 10 tbc
Unknown encoder 'libx264'

In order to acquire libx264, on Debian based distros (Ubuntu, Mint, Raspbian) install the following package:

 sudo apt-get install libavcodec-extra-53

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