From owner-freebsd-multimedia Thu Feb 13 14:53:18 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA15817 for multimedia-outgoing; Thu, 13 Feb 1997 14:53:18 -0800 (PST) Received: from seagull.rtd.com (seagull.rtd.com [198.102.68.2]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA15806 for ; Thu, 13 Feb 1997 14:53:12 -0800 (PST) Received: (from dgy@localhost) by seagull.rtd.com (8.7.5/8.7.3) id PAA16403; Thu, 13 Feb 1997 15:52:57 -0700 (MST) From: Don Yuniskis Message-Id: <199702132252.PAA16403@seagull.rtd.com> Subject: Re: broadcast video To: hasty@rah.star-gate.com (Amancio Hasty) Date: Thu, 13 Feb 1997 15:52:57 -0700 (MST) Cc: pete@sms.fi, dgy@rtd.com, multimedia@freebsd.org In-Reply-To: <199702130859.AAA08354@rah.star-gate.com> from "Amancio Hasty" at Feb 13, 97 00:59:42 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-multimedia@freebsd.org X-Loop: FreeBSD.org Precedence: bulk It seems that Amancio Hasty said: > >From The Desk Of Petri Helenius : > > Amancio Hasty writes: > > > > > > H.261 or H.263 are great for real time encoding for TV quality > > > you probably would want to use mpeg. So just read a little > > > on H.261, H.263, and mpeg. mpeg is almost tv quality depends > > > on the kind of encoder options that you give to the mpeg > > > encoder. > > > > > > On todays, fast PCs we can do mpeg playback in software. > > > > When you say MPEG above I take it that you were saying MPEG-1 since > > MPEG-2 can go beyond broadcast TV quality and is not that well > > decodable with software (the CPU power is not just there yet) > > Yes, I meant MPEG-1 and MPEG-2 is supposed to HDTV or higher > quality than TV. Yes, I understood that from the limited research I had already done. But, as I dig further into this, it seems like MPEG-*2* is intended for NTSC video. From a FAQ (URL not available off hand, sorry...) "The emphasis for the DVD movie player [a DVD FAQ, obviously :>] is on high quality, 720x480 (NTSC), 60 field per second video encoded from 24 frame per second film..." But, *those* numbers don't "add-up", either. as "480" lines are not displayed at 60Hz (since the display is interlaced) and I think the active video is less than 720 wide... Hmmm... I guess I need to locate some video codec manufacturers and look at some data sheets to get a firmer understanding... --don