这篇文章需要关注，因为它不符合我们的
维基指南。
如果您想贡献，请阅读此维基的规则，如果您有任何问题，请随时
联系维基团队，我们非常乐意帮助您！:-)
jw, Mon Feb 27 21:47:15 UTC 2012
Using a Canopus Twinpact 100
----------------------------
## on all involved machines do:
osc -Apm in dvswitch
http://pmbs.links2linux.org/download/home:/jnweiger/openSUSE_12.1
dvswitch 0.8.3.6-9.1
## on the twinpact machine, (and on all remote camera capture machines)
## replace 127.0.0.1 with the IP Address of the one machine that runs
## the dvswitch gui (known as the mixer)
sudo vi /etc/dvswitchrc
MIXER_HOST=127.0.0.1
## connect all involved machines to the mixer with dedicated ethernet cables.
## use gigabit, if more than one twinpact machine needs to be connected.
# Check the dipswitches at the bottom of the twinpact.
# A3 must be on to enable the remote control
# B7 (DVCAM/DV) does not seem to matter.
-> switch on twinpact
-> hit [INPUT SELECT] twice to select RGB input.
# twinpact remembers input selection and overscan mode
# across power-loss. nice.
## on the twinpact machine:
dmesg | grep firewire
firewire_ohci: isochronous cycle inconsistent
firewire_core: created device fw1: GUID 002011010f003159, S400
firewire_core: phy config: card 0, new root=ffc1, gap_count=5
firewire_core: IRM is not 1394a compliant, making local node (ffc0) root.
firewire_core: phy config: card 0, new root=ffc0, gap_count=5
# this only succeeds, when the mixer is up and running
sh -c 'while true; do sudo dvsource-firewire -t; sleep 2; done'
## on the storage machine (usually the mixer itself)
sh -c 'while true; do dvsink-files /tmp/dvswitch/test-%F-%T; sleep 2; done'
## on the mixer machine:
dvswitch &
-> if the twinpact video signal shows a fat black border, try the
-> Twinpact remote control
-> [OverScan]
# a gray half-translucent border is okay.
# It is only onscreen, but not recorded.
-> Hit [Record]
-> be happy.
-> regularly check disk space.
## CAUTION:
# dvsink-files just stops writing if it runs out of space.
# no error messages nothing on the gui.
# A dvswitch videostream takes a bandwithd of ca. 3.7 Mbytes/sec.
# Thus one twinpact + one camera + one dvsink-files together
# consume ca. 11Mb/s
# dvswitch itself consumes ca 50% of a 1.6Ghz intel 32bit CPU,
# together with one source and one sink, the load average
# on a Lenovo X60s is ca 0.7 -- (including possile 0.3 from
# a firefox with a bloody flash player showing advertisements).
# -> quite acceptable.