TwoLAME

If i use twolame reading bytes outputted to stdout with
sox, twolame doesn't read all bytes outputted to stdout.
If i use:
mpg321 /mnt/d/sound.mp2 --wav /dev/stdout | sox -t.wav
/dev/stdin -r 44100 -V -t.raw /dev/stdout lowpass 1900
| twolame -r -s 44100 -m s -b 224 -p /dev/stdin
/mnt/c/sound_fixed.mp2

The duration of sound.mp2 and sound_fixed.mp2 it's not
the same.
Seems that the start is ok and cuts off some bytes at
the end.
Using another files, the cutting is different.
I'm using mpg321 version 0.2.10
sox version 12.17.7
twolame version 0.3.8

If using the same commandline and replacing with
toolame(replacing the commandline different between
twolame and toolame) it works ok.