Tested the different AAC object types supported by faac: LC, Main and LTP. I ran the test on an old HP xw4000 and noted elapsed time as reported by faac. The test-material was a 7:35 long track, sampled from vinyl. It had been processed from WAV to OGG and back to WAV again.
| Type | Time (s) |
|---|---|
| LC | 48.5 |
| Main | 72.7 |
| LTP | 4169.7 |
Are the longer running times worth it? I couldn’t detect any difference with the tested material (not ideal to start with), and the files are slightly larger for Main and LTP. And there’s the matter of compatibility with iPods. The only one that works is LC, so I won’t bother.