Usage: ggwave-to-file [-vN] [-sN] [-pN] [-lN] -vN - output volume, N in (0, 100], (default: 50) -sN - output sample rate, N in [6000, 96000], (default: 48000) -pN - select the transmission protocol id (default: 1) -lN - fixed payload length of size N, N in [1, 16] Available protocols: 0 - Normal 1 - Fast 2 - Fastest 3 - [U] Normal 4 - [U] Fast 5 - [U] Fastest 6 - [DT] Normal 7 - [DT] Fast 8 - [DT] Fastest Enter a text message: Invalid message: size = 0