Hi Shanwei, On Sat, 2003-03-22 at 03:00, Cen, Shanwei wrote: > I'm new to V4L2 and the mailing list. After browsing the V4L2 API spec > in much detail, I still do not see how to capture audio: what device > to use, and how to query/specify sample rate and format etc. You're on the wrong spot here. ;-). V4L2 covers *video*. For audio, you probably want to read the OSS or ALSA docs. You could also use a higher level interface such as Artsd, Esound, MAS or Jack (each of them implements an audio capture interface), or use GStreamer for the job. Ronald -- Ronald Bultje <rbultje@xxxxxxxxxxxxxxxxxxx>