From owner-freebsd-multimedia Wed Apr 24 23:57:02 1996 Return-Path: owner-multimedia Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id XAA20787 for multimedia-outgoing; Wed, 24 Apr 1996 23:57:02 -0700 (PDT) Received: from rah.star-gate.com (rah.star-gate.com [204.188.121.18]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id XAA20778 for ; Wed, 24 Apr 1996 23:56:58 -0700 (PDT) Received: from rah.star-gate.com (localhost.star-gate.com [127.0.0.1]) by rah.star-gate.com (8.6.12/8.6.12) with ESMTP id XAA00413; Wed, 24 Apr 1996 23:56:54 -0700 Message-Id: <199604250656.XAA00413@rah.star-gate.com> X-Mailer: exmh version 1.6.5 12/11/95 To: Mark Tinguely cc: multimedia@freebsd.org Subject: Re: 30fps with vic? In-reply-to: Your message of "Wed, 24 Apr 1996 09:05:35 CDT." <199604241405.JAA00245@plains.nodak.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 24 Apr 1996 23:56:53 -0700 From: "Amancio Hasty Jr." Sender: owner-multimedia@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >>> Mark Tinguely said: > > > From: "Amancio Hasty Jr." > > > > > > Say has anyone managed to get 30fps with CIF geometry (352x288) ? > > > > > > Tnks, > > > Amancio > > > > > From: "Jim Lowe" > > Sure, if I point my camera at a wall I get 30fps, 40kbps, in h.261 mode > > with vic. If I just do raw frame captures I can get 640x480x4x30fps. > > > > -Jim > > Yep, the compression of moving images causes the lower frame rate and increa sed > bandwidth. Because of this, IMHO, full quality video will require the > compression to be done on the capture board. for internet use, we probably > would want only MPEG 1 quality, but leased/wider bandwidth networks will use > MPEG 2. unfortunately, MPEG 2 capture boards are very expensive ($4-5K). Hi, My next question is: has anyone done a profile analysis on vic / h.261 to see if vic's performance can be improved? Tnks, Amancio