Streamer, Capture Image & Video in Linux
http://linux.about.com/library/cmd/blcmdl1_streamer.htm streamer – record audio and/or video DESCRIPTION streamer reads audio and/or video data from /dev/video0 and /dev/dsp and writes the data to the disk. Various output formats are supported. Start streamer with ‘-h’ for a list of options and supported output formats. streamer will use the file extention of the output file name to figure which format to use. You need the -f/-F options only if the extention allows more than one format. You can safely stop the recording