При установке пакета rpm:
rpm -i mplayer-1.0-0.90.rc2.lvn8.x86_64.rpm

Происходит следующее:

warning: mplayer-1.0-0.90.rc2.lvn8.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID a109b1ec
error: Failed dependencies:
libSDL-1.2.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libXv.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libXvMC.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libXvMCW.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libXxf86dga.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libaa.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libcaca.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libcdda_interface.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libcdda_paranoia.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libcucul.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libdca.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libdv.so.4()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libdvdnavmini.so.4()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libdvdread.so.3()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libenca.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libfaad.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libfribidi.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libgif.so.4()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
liblirc_client.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
liblzo2.so.2()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libmpcdec.so.5()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libogg.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libpulse.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libpulse.so.0(PULSE_0)(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libspeex.so.1()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libtheora.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libtheora.so.0(libtheora.so.1.0)(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libungif.so.4()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libvorbis.so.0()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64
libxvidcore.so.4()(64bit) is needed by mplayer-1.0-0.90.rc2.lvn8.x86_64

Тоже самое при установке FFMpeg...
Пакет не битый, взятый с официального сайта.