MythTV imports the following external code:

|| '''Library Name''' || '''Upstream Library Location''' || '''Last imported revision (upstream)''' || '''Last imported date''' || '''Changeset''' || '''Comments''' ||
|| external/FFmpeg || http://git.ffmpeg.org/ || release/4.0 branch n4.0-45-g3dc75278a9 || 2018-05-30 || [https://github.com/MythTV/mythtv/commit/9dee6dd8 9dee6dd8] || ||
|| libbluray || http://git.videolan.org/git/libbluray.git || 1.0.2+ (git 8c15fdad) || 2018-05-21 || [https://github.com/MythTV/mythtv/commit/3ea8dda2 3ea8dda2] || ||
|| libdvdnav/libdvdread || http://svn.mplayerhq.hu/ || 1239 || 09/07/12 || [https://github.com/MythTV/mythtv/commit/71869c79 71869c79] || ||
|| ~~libhdhomerun~~ || ~~http://www.silicondust.com/support/hdhomerun/downloads/linux/~~ || ~~20100519beta1~~ || ~~05/19/10~~ || ~~[https://github.com/MythTV/mythtv/commit/baf36e4b baf36e4b]~~ || ||
|| libmpeg2 || http://libmpeg2.sourceforge.net/ || Unknown || 01/21/05 || [https://github.com/MythTV/mythtv/commit/2357c6a7 2357c6a7] || Used in lossless transcoder; See, also, [https://github.com/MythTV/mythtv/commit/28cd7a1c 28cd7a1c] ||
|| ~~minilzo~~ || ~~http://www.oberhumer.com/opensource/lzo/~~ || ~~2.03~~ || ~~08/17/09~~ || ~~[https://github.com/MythTV/mythtv/commit/9a7ca8a2 9a7ca8a2] [https://github.com/MythTV/mythtv/commit/ed7829fe ed7829fe]~~ || ~~Backport in [https://github.com/MythTV/mythtv/commit/9ab98c9f 9ab98c9f] has a typo, mentioning version 2.07~~ ||
|| ~~libsamplerate~~ || ~~http://www.mega-nerd.com/SRC/index.html~~ || ~~0.1.7~~ || ~~10/18/09~~ || ~~[https://github.com/MythTV/mythtv/commit/5f7280d6 5f7280d6]~~ || ||
|| libsoundtouch || http://www.surina.net/soundtouch/ || 1.3.1 || 05/23/06 || [https://github.com/MythTV/mythtv/commit/14a7fbf7 14a7fbf7] || ||
|| FreeFont fonts || http://savannah.gnu.org/projects/freefont/ || 20090104 || 07/20/10 || [https://github.com/MythTV/mythtv/commit/aff5f8eb aff5f8eb] || ||
|| lirc_client || http://www.lirc.org/ || 0.8.6 || 07/23/10 || [https://github.com/MythTV/mythtv/commit/21f80da4 21f80da4] || ||
|| replex || ? || 0.1.4 || ? || ? || Marcus Metzler ||