opus-tools-0.1.9 can not encode samples with !48000 sample rate.
I have test the opus-tools 1.1 to encode wav to opus(ogg container). But I found that opus-tools output opus just with 48000 sample rate. for example: I give a wav which is 20500 sample rate; in code, I think opus tools will resample it with speex resampler in 24000 sample rate. but the output opus file always is 48000.