Date: Thu, 13 Feb 1997 15:01:27 -0800 From: Amancio Hasty <hasty@rah.star-gate.com> To: Don Yuniskis <dgy@rtd.com> Cc: pete@sms.fi, multimedia@freebsd.org Subject: Re: broadcast video Message-ID: <199702132301.PAA16006@rah.star-gate.com> In-Reply-To: Your message of "Thu, 13 Feb 1997 15:52:57 MST." <199702132252.PAA16403@seagull.rtd.com>
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MPEG-2 is also intended for NTSC, HDTV, and computers You can easily call up Optibase or C-Cube. An mpeg decoder chip shall run you about $40 or less. BTW: Is your box going to run FreeBSD? Amancio >From The Desk Of Don Yuniskis : > 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
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