Hi List, (Sorry if this post appears more than once. But I posted it before and it doesn't appear. So I try again after signing-on) trying to get pjmedia working on a arm-device with mac os x, I first try to record to a file using recfile. But the resulting wav-file has only 44 byte. I am using pa_mac_core_old.c because the mac os x on that device doesn't provide AudioUnit. The problem seems to be (that's my idea, don't know if it is correct) that the stream is not opened correctly. I enabled PA_LOG_API_CALLS to see what's happening and the following logs appear: 11:59:38.844 pasound.c PA message: Pa_OpenStream called: 11:59:38.846 pasound.c PA message: PaStream** stream: 0x0x82948c 11:59:38.849 pasound.c PA message: PaStreamParameters *inputParameters: 0x0x2ffff9ac 11:59:38.851 pasound.c PA message: PaDeviceIndex inputParameters->device: 2 11:59:38.854 pasound.c PA message: int inputParameters- >channelCount: 2 11:59:38.856 pasound.c PA message: PaSampleFormat inputParameters->sampleFormat: 8 11:59:38.859 pasound.c PA message: PaTime inputParameters->suggestedLatency: 0.000476 11:59:38.861 pasound.c PA message: void *inputParameters- >hostApiSpecificStreamInfo: 0x0x0 11:59:38.864 pasound.c PA message: PaStreamParameters *outputParameters: NULL 11:59:38.867 pasound.c PA message: double sampleRate: 44100 11:59:38.869 pasound.c PA message: unsigned long framesPerBuffer: 512 11:59:38.872 pasound.c PA message: PaStreamFlags streamFlags: 0x1 11:59:38.874 pasound.c PA message: PaStreamCallback *streamCallback: 0x0x7d90 11:59:38.877 pasound.c PA message: void *userData: 0x0x829464 the later GetStreamInfo returns: 11:59:38.919 pasound.c PA message: Pa_GetStreamInfo returned: 11:59:38.919 pasound.c PA message: const PaStreamInfo*: 0x0x1150d8: 11:59:38.919 pasound.c PA message: { 11:59:38.919 pasound.c PA message: int structVersion: 0 11:59:38.920 pasound.c PA message: PaTime inputLatency: 0.000000 11:59:38.920 pasound.c PA message: PaTime outputLatency: 0.000000 11:59:38.920 pasound.c PA message: double sampleRate: 0.000000 11:59:38.920 pasound.c PA message: } As one can see the sampleRate is zero this time. What do I do wrong? Is it wrong parameters or is the initialization failing? Thanks for your help! Christian Beer