gstv4l2rc.c:261 'V4L2_PIX_FMT_MJPEG' undeclared(first use in this function) In which header file is the macro V4L2_PIX_FMT_MJPEG defined?Could anybody tell me? thx! Chao Xiang _________________________________________________________ Do You Yahoo!? "是IT精英吗？小试牛刀获时尚大奖！" http://cn.promo.yahoo.com/cgi-bin/udb/u