On Thu, 27 Jun 2002 06:15:29 -0700 (PDT) tony Tong <chaffmanus@xxxxxxxxx> wrote: > I am using v4l capture card on redhat7.1 which has > included the bttv driver. > but I find , in my program if I open and close > /dev/video0 ,and open it again ,I will get open erro > ---device busy . > If I open and close only once in it ,everthing is ok. > > why this happen ? How can I resolve it? Sure it's being properly closed? try "lsof /dev/video0" - you'll need to be root, and it'll help if you have lsof installed. - Eric