mp3encoder
VirtualBox testing on Fedora 18 (Spherical Cow) via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1304019-FO-MP3ENCODE09&grt.
FFmpeg
H.264 HD To NTSC DV
LAME MP3 Encoding
WAV To MP3
Mencoder
AVI To LAVC
x264
H.264 Video Encoding
Phoronix Test Suite v10.8.4