[AG-TECH] vic gui freezes...

[lujian]

We also had the problem before.  we found the problem may comes from the bt8x8 drivers which drive your capture card. 
Because of the problem, the VIC freezes for a long time, and stop sending RTCP Cname data, so the cname data refreshes very slowly in receiver sides.
I remember  we took two metheds:
1. short term solution: put the default Vic sending framerate to 30fps.
or 
2. long term solution: check your capture card, see if it has just one crystal unit 28.6Mhz, then replace it with a new capture card that has the crystal unit of 35.4Mhz. it works. 
p.s.
if your capture card always captures "mis-colored" wrong images, you can edit your /etc/modules.conf, and add the following line:
options bttv pll=1(,1,1, if you have multiple cards).




Hello everybody,

we are trying to fix a problem, that we are facing since the very
beginning of our AG activity, and that stayed with us throughout various
changes in AG software and OS releases:
whenever we start several vic instances on our capture machine with the
AG default frame rate / bandwidth values, the gui freezes after some
seconds. Video transmission is ok, but we have no chance to change the
settings of a specific video stream unless we restart the vic. 
The problem disappears when we start with the low transmission/frame
rates of the ucl-vic defaults.

conflicting interrupts dont seem to be a problem here: 

ag at ag-vin:~>  cat /proc/interrupts 
           CPU0       CPU1       
  0:     200243     199649    IO-APIC-edge  timer
  1:       1035       1003    IO-APIC-edge  keyboard
  2:          0          0          XT-PIC  cascade
  3:      18120      18213   IO-APIC-level  bttv
  4:      18906      18747   IO-APIC-level  bttv
  8:          1          1    IO-APIC-edge  rtc
 10:      21250      21610   IO-APIC-level  bttv
 11:    1011645    1012826   IO-APIC-level  eth0
 12:      78269      77369    IO-APIC-edge  PS/2 Mouse
 14:       3605       3788    IO-APIC-edge  ide0
 15:          2          3    IO-APIC-edge  ide1
NMI:          0          0 
LOC:     399801     399799 
ERR:          0
MIS:          0

We are currently running SuSE. 7.3 on a dual Pentium III 866 MHz, but we
observed the same problems under the AG RedHat Release.

Any help would be greatly appreciated.

Martin


-- 
_______________________________________________________________________
 Martin Sczimarowsky
 Forschungszentrum Juelich / Zentralinstitut fuer Angewandte Mathematik 
 D 52425 Juelich                Tel/Fax  : +49 2461 61 6411/6656
_______________________________ M.Sczimarowsky at fz-juelich.de __________
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