sdcafe@c2d-desktop:/usr/lib$ whereis ffmpeg
ffmpeg: /usr/bin/ffmpeg /usr/bin/X11/ffmpeg /usr/share/ffmpeg /usr/share/man/man1/ffmpeg.1 /usr/share/man/man1/ffmpeg.1.gz
sdcafe@c2d-desktop:/usr/lib$ ldd /usr/bin/ffmpeg
	linux-vdso.so.1 =>  (0x00007ffff3873000)
	libavdevice.so.53 => /usr/lib/x86_64-linux-gnu/libavdevice.so.53 (0x00007f5627988000)
	libavfilter.so.2 => /usr/lib/x86_64-linux-gnu/libavfilter.so.2 (0x00007f5627758000)
	libavformat.so.54 => /usr/lib/libavformat.so.54 (0x00007f562746b000)
	libavcodec.so.54 => /usr/lib/libavcodec.so.54 (0x00007f5626911000)
	libpostproc.so.52 => /usr/lib/x86_64-linux-gnu/libpostproc.so.52 (0x00007f56266ea000)
	libswresample.so.0 => /usr/lib/libswresample.so.0 (0x00007f56264e2000)
	libswscale.so.2 => /usr/lib/x86_64-linux-gnu/libswscale.so.2 (0x00007f562629d000)
	libavutil.so.51 => /usr/lib/x86_64-linux-gnu/libavutil.so.51 (0x00007f562607d000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f5625df8000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f5625bdb000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5625839000)
	libavformat.so.53 => /usr/lib/x86_64-linux-gnu/libavformat.so.53 (0x00007f562553d000)
	libavcodec.so.53 => /usr/lib/x86_64-linux-gnu/libavcodec.so.53 (0x00007f562472d000)
	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f56243f9000)
	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f56241e5000)
	libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f5623fdf000)
	libjack.so.0 => /usr/lib/x86_64-linux-gnu/libjack.so.0 (0x00007f5623d9e000)
	libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2 (0x00007f5623ab0000)
	libdc1394.so.22 => /usr/lib/libdc1394.so.22 (0x00007f562383d000)
	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f56235a1000)
	librtmp.so.0 => /usr/lib/x86_64-linux-gnu/librtmp.so.0 (0x00007f5623386000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f562316f000)
	libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f5622f5f000)
	libva.so.1 => /usr/lib/libva.so.1 (0x00007f5622d48000)
	libxvidcore.so.4 => /usr/lib/x86_64-linux-gnu/libxvidcore.so.4 (0x00007f5622a11000)
	libx264.so.120 => /usr/lib/x86_64-linux-gnu/libx264.so.120 (0x00007f56226cb000)
	libvpx.so.0 => /usr/lib/libvpx.so.0 (0x00007f5622428000)
	libvo-amrwbenc.so.0 => /usr/lib/libvo-amrwbenc.so.0 (0x00007f562220d000)
	libvo-aacenc.so.0 => /usr/lib/libvo-aacenc.so.0 (0x00007f5621fee000)
	libtheoraenc.so.1 => /usr/lib/x86_64-linux-gnu/libtheoraenc.so.1 (0x00007f5621db0000)
	libtheoradec.so.1 => /usr/lib/x86_64-linux-gnu/libtheoradec.so.1 (0x00007f5621b95000)
	libspeex.so.1 => /usr/lib/x86_64-linux-gnu/libspeex.so.1 (0x00007f562197c000)
	libschroedinger-1.0.so.0 => /usr/lib/libschroedinger-1.0.so.0 (0x00007f56216c8000)
	libopenjpeg.so.2 => /usr/lib/libopenjpeg.so.2 (0x00007f56214a8000)
	libopencore-amrwb.so.0 => /usr/lib/libopencore-amrwb.so.0 (0x00007f562128c000)
	libopencore-amrnb.so.0 => /usr/lib/libopencore-amrnb.so.0 (0x00007f5621051000)
	libmp3lame.so.0 => /usr/lib/x86_64-linux-gnu/libmp3lame.so.0 (0x00007f5620dc7000)
	libgsm.so.1 => /usr/lib/libgsm.so.1 (0x00007f5620bb9000)
	libfaac.so.0 => /usr/lib/libfaac.so.0 (0x00007f56209a6000)
	libdirac_encoder.so.0 => /usr/lib/libdirac_encoder.so.0 (0x00007f562071f000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f5627bca000)
	libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007f562024f000)
	libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007f5620023000)
	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f561fe04000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f561fc00000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f561f900000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f561f6f8000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f561f4e1000)
	libraw1394.so.11 => /usr/lib/x86_64-linux-gnu/libraw1394.so.11 (0x00007f561f2d2000)
	libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007f561f0c3000)
	libgnutls.so.26 => /usr/lib/x86_64-linux-gnu/libgnutls.so.26 (0x00007f561ee06000)
	libgcrypt.so.11 => /lib/x86_64-linux-gnu/libgcrypt.so.11 (0x00007f561eb88000)
	libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007f561e980000)
	liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0 (0x00007f561e705000)
	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f561e501000)
	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f561e2fb000)
	libtasn1.so.3 => /usr/lib/x86_64-linux-gnu/libtasn1.so.3 (0x00007f561e0e9000)
	libp11-kit.so.0 => /usr/lib/x86_64-linux-gnu/libp11-kit.so.0 (0x00007f561ded7000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f561dcd3000)