Update Ubuntu PPA

Author: njoyard

README.md

@@ -37,7 +37,7 @@ Most features should work when using avconv and avprobe instead of ffmpeg and ff
 
 **Windows users**: most probably ffmpeg and ffprobe will _not_ be in your `%PATH`, so you _must_ set `%FFMPEG_PATH` and `%FFPROBE_PATH`.
 
-**Debian/Ubuntu users**: the official repositories have the ffmpeg/ffprobe executable in the `libav-tools` package, and they are actually rebranded avconv/avprobe executables (avconv is a fork of ffmpeg).  They should be mostly compatible, but should you encounter any issue, you may want to use the real ffmpeg instead.  You can either compile it from source or find a pre-built .deb package at https://ffmpeg.org/download.html (For Ubuntu, the `ppa:jon-severinsson/ffmpeg` PPA provides recent builds).
+**Debian/Ubuntu users**: the official repositories have the ffmpeg/ffprobe executable in the `libav-tools` package, and they are actually rebranded avconv/avprobe executables (avconv is a fork of ffmpeg).  They should be mostly compatible, but should you encounter any issue, you may want to use the real ffmpeg instead.  You can either compile it from source or find a pre-built .deb package at https://ffmpeg.org/download.html (For Ubuntu, the `ppa:mc3man/trusty-media` PPA provides recent builds).
 
 #### flvtool2 or flvmeta