Re: How to grab from multiple DV-Cameras simultaneously?

On Sun, 2003-10-05 at 08:53, Matthias Goerner wrote:
> >
> >
> >You first need to see if your cameras can be told which iso channel to
> >transmit on. Get libavc1394 from cvs at
> >http://sf.net/projects/libavc1394/ and use the program test/plugreport
> >to report on plug control registers where channel may be set. If so,
> >test/plugctl can set the channel.
> >
> >
> >
> I did so, however once I stoped transfer using options "plugctl 0
> stop_tx", plugctl cannot change bcast_connection anymore (only kernel
> modules related to 1394 are ohci1394, raw1394, ieee1394).
> $ test/plugctl 0 start_tx
> start_tx....
> oMPR .plugs=1 .bcast_channel=63
> oPCR .online=1 .bcast_connection=0 .n_p2p_connections=0
> oPCR .data_rate=0 .overhead_id==480?1 .channel=63 .payload=122
> oPCR .online=1 .bcast_connection=0 .n_p2p_connections=0
> oPCR .data_rate=0 .overhead_id==480?1 .channel=63
>
> Then I unpluged and pluged the camera physically to reset it.
>
> After that I added "o_mpr.bcast_channel = 62" before "plug1394_set_oMPR"
> but the camera is still sending on channel 63 (using dvgrab).
> Reseting the camera in the manner mentioned above I tried the same with
> "o_pcr.channel".
> Again no change.
>
> What does this mean?
>

Sorry so late. More than likely your camera can not change its channel.

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Received on Mon Oct 13 15:29:15 2003