I'm using bttv version 7.68, on linux 2.4.14. I have installed the patches required for v4l2. Now, xawtv and mp1e work with v4l2 interface. I've written a capture program using v4l2 interface. I would like to track the loss of frames during capture. In my capture program following sequence #s are consistently missing 3, 9, 15,21,27,33... every 6th frame is missed. I'm using 1GHz pentiumIII system with a FlyVideo II, capturing interlaced, PAL, only video. I tried printing messages in mp1e-1.9.1 after the DQBUF ioctl. In the first set of printf messages(see below), sequence #s are getting repeated, in the second set where timestamps are also printed, the sequence #s are skipped as in my capture program. Could someone tell me if the sequence # can be used as a reliable field to decide if frame skips occur in the capture program. Sometimes Timestamp fields have negative values, is that o.k? DQ index = 0, length =126976 seq=0 DQ index = 1, length =126976 seq=1 DQ index = 2, length =126976 seq=1 DQ index = 3, length =126976 seq=2 DQ index = 4, length =126976 seq=2 DQ index = 5, length =126976 seq=3 DQ index = 6, length =126976 seq=4 DQ index = 7, length =126976 seq=4 DQ index = 8, length =126976 seq=5 DQ index = 9, length =126976 seq=5 DQ index = 10, length =126976 seq=6 DQ index = 11, length =126976 seq=7 DQ index = 12, length =126976 seq=7 DQ index = 13, length =126976 seq=8 DQ index = 14, length =126976 seq=8 DQ index = 15, length =126976 seq=9 DQ index = 16, length =126976 seq=10 DQ index = 17, length =126976 seq=10 DQ index = 0, length =126976 seq=0 time=1008839756.335295 DQ index = 1, length =126976 seq=1 time=1008839756.368662 DQ index = 2, length =126976 seq=2 time=1008839756.402028 DQ index = 3, length =126976 seq=4 time=1008839756.468762 DQ index = 4, length =126976 seq=5 time=1008839756.502129 DQ index = 5, length =126976 seq=6 time=1008839756.535495 DQ index = 6, length =126976 seq=7 time=1008839756.568862 DQ index = 7, length =126976 seq=8 time=1008839756.602229 DQ index = 8, length =126976 seq=10 time=1008839756.668962 DQ index = 9, length =126976 seq=11 time=1008839756.702329 DQ index = 10, length =126976 seq=12 time=1008839756.735695 DQ index = 11, length =126976 seq=13 time=1008839756.769062 DQ index = 12, length =126976 seq=14 time=1008839756.802429 DQ index = 13, length =126976 seq=16 time=1008839756.869162 DQ index = 14, length =126976 seq=17 time=1008839756.902529 DQ index = 15, length =126976 seq=18 time=1008839756.935896 DQ index = 16, length =126976 seq=19 time=1008839756.969262 DQ index = 17, length =126976 seq=20 time=1008839757.002629 DQ index = 18, length =126976 seq=22 time=1008839757.069363 Thanks in advance, Thenmozhi. -- ---------------------------------------------------------------------------- Thenmozhi Arunan then@xxxxxxxxxxxxxxxxxxxxxxx DV012, Vigyanpura Campus, Multimedia Systems Lab IISc Quarters, (Opp ISRO Headquaters) SuperComputer Educ & Research Centre New BEL Road Indian Institute of Science Bangalore-560094 Bangalore-560012, India. KARNATAKA,India Office Ph: 80-309 2896. Home Ph: 341 1952 ----------------------------------------------------------------------------
