This test was for multiple reasons: a) to expand my knowledge of DVD video extraction process (heard that CELT did better with 48KHz and figured stereo AC3 converted to WAV would work; b) to test CELT encoding speed in regards to the statement that it was a magnitude faster because of no psy-model and other reasons; c) just another general encoder speed test carried out on a not-so-modern machine. Seems CELT could benefit from optimizations. But anyhow, I ended up putting results here since the OggEnc2 compile (SSE2) above seemed dramatically faster than Venc.
This test focused on lossy encoders aiming for a VBR setting which would result in @100kbps since I figured a DVD commentary track was less complex and needed no 5.1->stereo conversion. I think 100kbps for this material is overkill since there is virtually no audible winner here. Lossless codecs were added to reflect the material was non-complex and easily compressed.
Encoder/Settings File size Bitrate* Speed* TimeThis
_________________________ __________ __________ _______ ___________
Musepack 1.30 -q 4.99 65,978,894 98.8 kbps 23.99x 222.687 sec
AoTuv 6.03 -q 4 65,996,209 98.8 kbps 13.37x 399.593 sec
OggEnc 2.7 SSE2 -q 4 65,996,560 98.8 kbps 26.71x 200.781 sec
CELT 0.11.2 --bitrate 100 66,843,352 [97.8 kbps] [30.49x] 175.156 sec
Nero AAC 1.5.1.0 -q 0.4 67,192,851 [98.9 kbps] [20.86x] 256.093 sec
OggEnc 2.7 SSE2 -q 4.1 67,515,708 101.1 kbps 26.57x 201.078 sec
AoTuv 6.03 -q 4.1 67,516,144 101.1 kbps 13.31x 401.265 sec
LAME 3.99 alpha16 -V 5 68,150,160 102.1 kbps 14.10x 379.500 sec
Musepack 1.16 -q 4.99 68,544,320 102.7 kbps 24.03x 222.281 sec
Helix MP3 5.1 -V90 69,001,032 103.4 Kbps [104.99x] 50.875 sec
Musepack 1.30 -q 5 72,427,994 108.5 kbps 23.73x 225.171 sec
Helix MP3 5.1 -V100 72,959,688 109.3 Kbps [102.59x] 52.062 sec
Musepack 1.16 -q 5 75,120,664 112.5 kbps 23.77x 225.406 sec
WAVE (16bit 48KHz 2ch) 1,025,507,372 1536 kbps - - - - - - - - - -
FLAC 1.2.0 -5 312,449,472 468 kbps [88.90x] 60.078 sec
Monkey's Audio -c2000** 312,394,832 468 kbps [166.22x] 32.328 sec
WavPack 4.60 311,117,884 465 kbps [95.57x] 55.890 sec
TAK 2.1.0 -p 2 281,036,191 421 kbps 122.28x 43.718 sec
* values reported by encoder, brackets indicate user-calculated values
** old/deprecated version of codec used, don't ask