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Martin Towner
登録日: 2011.04.12 記事: 5
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日時: Tue Apr 19, 2011 7:49 pm 記事の件名: UFOcapture and IP camera |
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Hello all,
I would like to ask for advice - I am trying to use UFOcapture with an IP camera over ethernet for high accuracy meteor detection; the Arecontvision AV8365DN. It is a very nice all-sky camera with 4 video cameras (1600x1200 each) in one housing (a picture below), but it streams video output over ethernet as RTSP, rather than TV video signals.
So to use it with UFOcapture, I have two problems - I will need 4 copies of Capture running (or 4 computers!). But also I have to get the video feed handled correctly: I have some success, using the WebcamXP video source filters to convert ethernet RTSP into direct video, but the picture is not quite right (see the clipboard picture for my results, looking at my office window!).
So, I was wondering, has anyone else used UFO with IP cameras?
There are some alternative video source filters available (within VLC, or from live555.com, or morgan-multimedia.com but they require more programming skill to use - but maybe they are better)
Also, the video feed from each camera is 1600x1200 at 20fps - I think UFO is OK with this image size?
Many thanks
Martin
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SonotaCo Site Admin
登録日: 2004.08.07 記事: 12653 所在地: 139.67E 35.65N
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日時: Thu Apr 21, 2011 9:23 am 記事の件名: Re: UFOcapture and IP camera |
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Hi Martin
Thank you for introducing a surprising product.
But I am sorry that this device is using H.264 coding.
Current UFOCapture requires un-compressed video so it is hopeless to use this device anyway.(decoding of coded video does not work well for motion detection),
Current UFOCaptureV2 can handle up to 720x576/25fps or 720x480/30fps.
(program itself is logically possible to handle any size and rate,
but actual performance of single logical CPU becomes bottle neck)
It is possible to run multiple instances on one PC simultaneously and
detect multiple video input. It needs one logical CPU and one HDD for
each video. There are many people who run two instances on one PC.
But tree or four may be very difficult because of bandwidth limit of PC.
Recently UFOCaptureHD was developed (released to some special users already)
it uses multi-core parallel processing on multi-core CPU and achieves upto
1920x1080/30i HD un-compressed video. It needs more than 4 core CPU and
raid 0 4HDDs array.
See http://sonotaco.jp/forum/viewtopic.php?t=2391
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Lightningwizard
登録日: 2007.10.19 記事: 165
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日時: Mon Apr 25, 2011 4:25 am 記事の件名: |
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Maybe a awkward kind of solution, but one could use a Watec camera with fisheye lens with UFOCapture as detector, sending a beep or starting a command which triggers a program that saves a few seconds of video stream from the IP?
Or send the IP camera streams to a monitor, and detect events in it by another camera with UFOcapture to find triggers. If there is no monitor flickering/scrolling.
Does the manufacturer not provide any event detection software?
Oscar
_________________ Weather & Photography
http://www.lightningwizard.com
EuroSprite blog:
http://eurosprite.blogspot.com |
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Martin Towner
登録日: 2011.04.12 記事: 5
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日時: Tue May 03, 2011 9:28 pm 記事の件名: |
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Thanks both for your useful suggestions - The Arecont camera can also produce mjpeg coding video, as well as h264, but it is still compressed, so probably not useful. The manufacturer does supply software which has motion detection - also there are also other alternatives I've found: 'blue iris' for windows, and 'zoneminder' for linux - but they are general security surveillance software, and lack many of the nice UFOcapture features for meteor work.
I will test the general software, but I think the best option will be the good idea of the additional Watec camera with fisheye, using UFOcapture, which will then trigger a recording from the IP cameras. It sounds quite possible with simple scripting, as the IP cameras are very easy to record using something like VLC. The difficulty will be storing buffering before the event I think.
Martin
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