different montage

LordThor · Post by **LordThor** » Thu Oct 13, 2005 4:11 pm

well, i just found ZM on the web and think is a really cool App, the only problem that i can find, is that even in the cameras computer, there is a noticeable delay (from streaming) between what happens and what u see... I just wanted to know, is there any way to create / use the devices directly from linux with VLC player for example (open device feature) i searched teh forums an found nothing about this...

Best Regards.

jameswilson · Post by **jameswilson** » Thu Oct 13, 2005 4:30 pm

Not that i know to. I have had some success with tvtime but it can only show 1 channel at a time. If you have single inputs per chip you may able to use this but its a bodge. There are other posts about pulling the zm images straight out of shared mem but this is mainly to ease the load on the server and give us a more stable live view. Ideally if i was caperble id like to create its own gui that did this but its a huge job as you can imagine. BTW how long is your delay.

LordThor · Post by **LordThor** » Thu Oct 13, 2005 7:28 pm

well, depends on load, but it rounds 5 - 10 secs

1 have 2 BT848 Chipset 4 cam boards and that delay is getting on my nerves!

=(

any comments are prefiated, im noob with ZM and linux in general =P

Blazer · Post by **Blazer** » Thu Oct 13, 2005 7:32 pm

Are you in "High" or "Low" bandwidth mode? Is the ZM server on the same LAN as the PC you are viewing from? What is the load like on your ZM server (check while you are streaming)?

I'm pretty much a Zondminder n00b, but I have setup two Zm servers, one using a USB camera, and the other using normal video inputs to a quad chip card, and see no noticable streaming delay on either one.

jameswilson · Post by **jameswilson** » Thu Oct 13, 2005 7:37 pm

i have written a windows viewer for zm that pulls jpegs off the server. This is pretty live as there is no buffering (causes other issues mind) but there will always be a little delay unless you have a monster zm, gigabit lan and a rapid client

James

Post by **zoneminder** » Thu Oct 13, 2005 8:23 pm

Mpeg streaming usually involves a delay as the player tends to buffer for a while. Jpeg streaming is normally within a second or two max of real time.

Phil

LordThor · Post by **LordThor** » Thu Oct 13, 2005 8:34 pm

heheh, i think i didn't explain myself quite nicely =P
the thing is that i want a montage on the Linux box, to plug a TV into the Video card Tv output to watch them, i don't care about the delay over the net, that "regular" thing but when watching the live cams off the box, i would like to have Video (not jpeg) signal from the board montaged in some way
i have seen in /dev the video0 and video1, but those are still mixed up, and saw loop0 ~ loop7 (thought local video loops for 8 chanels) but them could not be opened (access denied) so i ran out of ideas to dump the local board to screen =P

jameswilson · Post by **jameswilson** » Thu Oct 13, 2005 8:38 pm

dont suppose you know anyone who can make an x app??

James

LordThor · Post by **LordThor** » Thu Oct 13, 2005 8:41 pm

mmm no i don't heheh, but i also think that it's not "necessary" if screens could be sent to a device, then the montage could be made with any player, off course i could be getting all wrong and talking nonsense, but i don't now heheh

jameswilson · Post by **jameswilson** » Thu Oct 13, 2005 8:43 pm

the problem is getting the video into another app while zm is grabbing it. If you use something like tv time it stops zm sqitching between inputs as it tries to grab a realtime image from whatever you select. I tried this a bit ago and gave up, but if you get anywhere please let me know

James

Post by **zoneminder** » Thu Oct 13, 2005 8:58 pm

You can of course use a v4l loopback device. This was developed for Motion (the competition

) but should work with any V4L app. The url is http://motion.sourceforge.net/vloopback/ I think.

Phil

Blazer · Post by **Blazer** » Fri Oct 14, 2005 7:44 pm

Also check out http://www.lavrsen.dk/twiki/bin/view/Mo ... backDevice

LordThor · Post by **LordThor** » Tue Oct 18, 2005 2:20 pm

soory 4 my ignorance, but... how am i suposed to feed the pipe from Zoneminder output?

a little orientation is highly thanked

Post by **zoneminder** » Wed Oct 19, 2005 11:43 am

I can't help you much with that as I've never actually used it I'm afraid.

Phil