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Notice: This program is PowerPC only and will not work with Lion 10.7 or any later version of Mac OS X.

LAMEVMX: LAME Ain't an MP3 Encoder with VMX

LAMEVMX is a highly PowerPC-optimized build of the LAME MP3 encoder, version 3.100. It is largely based on tmkk's AltiVec/SSE Optimized LAME Encoder with the following changes:

The executable binary (698K, gzipped) is three-headed and selects the proper version for G3, G4 and G5 systems. The G3 version obviously doesn't have AltiVec, but is an optimized and tuned build for that platform. The G5 version has additional optimizations for the PowerPC 970. Run the binary with no arguments to see the selected version. It runs on Mac OS X 10.4 and 10.5. To use, just decompress it and chmod +x.

With Energy Saver set to Highest Performance, my Tiger-based Quad G5 achieves 25x playback speed and up (peaks at around 30x under -V1). The non-AltiVec version only benches at around 8x.

To do:

Source code is available from the repo on Github.
Cameron Kaiser