MythTV imports the following external code:

Library Name	Upstream Library Location	Last imported revision (upstream)	Last imported date	Changeset	Comments
libavcodec/libavfilter/libswscale/libavutil/libpostproc	​http://git.ffmpeg.org/	24880	02/10/10	​25803
libbluray	​http://git.videolan.org/	e12b2a5ddc73e99370d7ad89823e478efc109e35	08/23/10	​25819
libdvdnav/libdvdread	​http://svn.mplayerhq.hu/	1215	07/30/10	​25514
libhdhomerun	​http://www.silicondust.com/support/hdhomerun/downloads/linux/	20100519beta1	05/19/10	​24741
liblivemedia	​http://www.live555.com/liveMedia/	Unknown	06/21/06	​10265
libmpeg2	​http://libmpeg2.sourceforge.net/	Unknown	01/21/05	​5118	Used in lossless transcoder; See, also, ​25461
minilzo	​http://www.oberhumer.com/opensource/lzo/	2.03	08/17/09	​21332 ​21333	Backport in ​21334 has a typo, mentioning version 2.07
libsamplerate	​http://www.mega-nerd.com/SRC/index.html	0.1.7	10/18/09	​22521
libsoundtouch	​http://www.surina.net/soundtouch/	1.3.1	05/23/06	​9996
FreeFont? fonts	​http://savannah.gnu.org/projects/freefont/	20090104	07/20/10	​25382
lirc_client	​http://www.lirc.org/	0.8.6	07/23/10	​25415