On Wed, Oct 14, 2009 at 4:05 PM, Youssef AZZOUZI <sidimoulay2000 at hotmail.fr> wrote: > I thought that if I change the clock rate the problem will be solved, I > launch now pjsua with this command: --clock-rate=8000 , the first is > dispeared and I get an other: > > Master / sound??? Underflow,? buf_cnt=0,? will generate 1 frame > Master / sound??? Underflow,? buf_cnt=0,? will generate 1 frame > Master / sound??? Underflow,? buf_cnt=0,? will generate 1 frame > Master / sound??? Underflow,? buf_cnt=0,? will generate 1 frame > > What to do? If you have no problem with audio (quality), then nothing to do. Your sound device has some (clock) drifts and pjmedia tries to compensate that. If you're still worried about that, try running it on clock rate 48000 or 44100, see if it disappears. Cheers Benny