Hai all! I am working as research assistant at university o kansas . I have downloaded latest drivers for video for linux -2 and installed them all along with required packages. Got source from bttv-v4l2.sourceforge,net. I tested some sample applications and they work. I have set capture frame rate to 30 frames per second and this is set as default frame rate if capture format is NTSC. Now i calculated number of frames captured per second in another way by keeping a loop count as: startTime = time(NULL); i=0; while(i <= 1000) { read(fd,imagesizeinbytes(for 320x240x24bpp),&buffer); i++ } endTime = time(NULL); framerate = 1000/(endTime-startTime); (start , end times have been declared long ints) But this frame rate comes out to be 10 framespersecond. Why is there such discrepancy. WHats flaw in this?? (By making ioctl call i find framerate of 30fps.) Help will be greatly appreciated. THanks for one and all; bye, SUNIL. __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/