Date: Wed, 9 Jul 2003 09:53:12 -0500 (CDT) From: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> To: freebsd-questions@freebsd.org, kopts@astro.psu.edu Cc: on@cs.ait.ac.th Subject: Re: nutball video question Message-ID: <200307091453.h69ErC8K084022@web.cs.ndsu.nodak.edu> In-Reply-To: <Pine.GSO.4.21.0307090318110.10681-100000@gnom.astro.psu.edu>
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> How fast should be the server to be able > to perform this task? For instance, would PII/400MHz/128Mb be enough? depends on the quality of the output and if this a dedicated machine with idle cycles. the multicast vic application does not take to big of a machine Pentium I/100. Realtime MPEG2 takes more power. > Do > different cards (meteor/bktr) consume CPU power differenly, or about the > same? only the original Matrox Meteor is supported, and it cannot run on modern PCI buses without locking up. > What is the video resolution which consumes almost 100Mbps? If a person runs the video on the headless machine, and diplays using X running over ssh, you are also sending all the overhead of X with the video. The original poster, J. Seth Henry, did not need movie quality and should vic and multicast the video stream to the display. vic will send compressed video in UDP multicast packets. If movie quality video is required, I would suggest MPEG compression before sending to network, not displaying the raw video over X. > Is it possible to record video under FreeBSD? Which card should I buy for > that? Is multicasting can be done using combination of available software, > or some programming required? For serious digital recording, I would point you towards hardware MPEG2 compression. FreeBSD does not have a free driver for hardware MPEG2 devices. --Mark Tinguely
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