Problems with cameras

[jonapachanga]

Hello,
I have a server with:
Intel E3400
2GB of RAM
1.5 TB hard disk
Kodicom plate 4400
Ubuntu Server 11.10
ZoneMinder 1.25

I connect 4 camera and it works perfect, the problem arises when I connect my 5th camera, begins to be swept.

the configuration of bttv.conf is:
alias char-major-81 bttv
options bttv gbuffers = 16 card = 0x85, 0x84, 0x85, 0x85, 0x85, 0x84, 0x85, 0x85 chroma_agc = 1 tuner = 4

how to add cameras to ZoneMinder is:
Monitor-1 / dev/video0 - chanel = 0
Monitor-2 / dev/video1 - chanel = 1
Monitor-3 / dev/video2 - chanel = 2
Monitor-4 / dev/video4 - chanel = 3

Monitor-5 / dev/video0 - chanel = 4
....
I notice is that it divides the fps .. some work at 25fps and those with problems to 10.

from already thank you very much and sorry.
Jonathan Eseiza

[bb99]

start by turning multi buffers off and changing captures per frame to a value of 2.

[jonapachanga]

Thank you. It worked perfectly ...

The other problem that presents itself now is that the expansion module that brings the plate only lets me connect 2 cameras, I have connected 6 and I have to connect 2 more, for a total of 8 ... the two missing not see

[sabaka33]

start by turning multi buffers off and changing captures per frame to a value of 2.

This also fixed my problem. Clean install of Ubuntu 11.10 server with PV-183 - 16 port capture card & zoneminder 1.25. Added 4 cameras but as newer cameras were added into zm, older ones stopped working (blue screen). Video was randomly showing up. /dev/video0 (0) would sometimes turn on, show camera A then turn back to blue screen. Sometimes it would show camera B, but mostly was blue screen. My captures per frame is set to 5 for all 4 cameras.

[jonapachanga]

Fix it already ..
I resolved to change the monitor channel 7 and 8 were in the channel (6) and (7) by (8) and (9) .. what is not is what makes this channel hopping to work ..
Thank you all.