Add note about ffmpeg/libav on Ubuntu

Description

Note that by default Ubuntu and Debian ship libav and installing the `ffmpeg` package from the default repository will not get you FFmpeg. If you are unsure about where to get FFmpeg, please head the the [FFmpeg website](http://ffmpeg.org).

Assignee

Lars Kiesow

Reporter

Lars Kiesow

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None

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Fix versions

Affects versions

Priority

Minor
Configure