Dear forum,

is there a command line encoder, free or not, that has a resample option from 8 kHz to 96 kHz? I aready tested aacenc from psytel, but the only samplingrates that dont cause a crash are 44.1, 48 and 32 kHz.

Another option could be to resample the files by another application after encoding. Not working is Audition with nero plugin:-| Does anybody know a resampler that can resample (ideally aac and mp4 files) in batch processing?

You can't resample an AAC file after encoding. You can decode it to PCM, resample, and after that re-encode to AAC but that would be a stupid thing to do because each time you encode PCM to a lossy format there will be some quality loss.

Ideally you should resample before encoding if resampling is necessary at all.

Could you please explain what you are doing and why you need to resample?

Thanks a lot for the quick reply. I am building a test set that should contain every possible combination of bitrate and samplerate for hardware tests.

Good idea to resample before encoding. I just tried, result is that neroaacenc cannot deal with sampling frequencies of 8, 11.025, 16, 22.05 and 32 kHz; aacenc and faac change sampling rates (8 to 16, 11.025 to 22.05, 16 to 32, 22.05 to 44.1 kHz). Frequencies of 32, 44.1, 48, 88.2 and 96 kHz are treated correctly in faac and aacenc. Any idea what is the problem with faac/aacenc?