2 expected rate >= 0, not -1
3 expected sample size >= 0, not -2
4 nchannels must be 1 or 2, not 3
5 unknown audio encoding: 177
6 for linear unsigned 16-bit little-endian audio, expected sample size 16, not 8
7 for linear unsigned 8-bit audio, expected sample size 8, not 16
