Date: Wed, 12 Feb 1997 17:37:42 -0800 From: Amancio Hasty <hasty@rah.star-gate.com> To: Don Yuniskis <dgy@rtd.com> Cc: multimedia@freebsd.org Subject: Re: broadcast video Message-ID: <199702130137.RAA06298@rah.star-gate.com> In-Reply-To: Your message of "Wed, 12 Feb 1997 13:01:15 MST." <199702122001.NAA09277@seagull.rtd.com>
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Hi, If the video is "canned" then all you have to do is push the stream onto the network and encapsulate in some sort of protocol. RTP or a similar protocol in which it has packet info such as codec type, packet number, sequence number, etc.. You will have to decide whether this is point to point or ip multicast, it can make a difference if you want to broacast to a set of stations. 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. >From The Desk Of Don Yuniskis : > It seems that Amancio Hasty said: > > > On a fast network lets say 1mbit or more you can get 20 to 30 frames > images possible (since it seems bandwidth isn't an issue, etc.), > I think the platform is far enough away (technologically) from what > I'd be implementing that it wouldn't give me a good feel for > just how much horsepower it *does* take to achieve the goals > I'm after. I respectifully disagree . > Though any authoring tools might be a WIN. > > > o video Matrox Meteor or Intel Smart Video Recorder III > > Is this capable of single field/frame recording? Yes > > o S3 968 based card because it has VRAM and it fast enough for > > video display > > > > o CPU P166 try to avoid PPRO 200Mhz till the PCI chipset gets > > debugged > > Hmmm... I imagine this still wouldn't let me see full screen > video, etc. Can you recommend a video codec vendor? How Thats odd because I can most definitly see full video on my P100 with audio so with my PPROO or a P166 equip with MMX the video would fly but then again I did purchased the systems and I do bother to play with them 8) > sophisticated are the DEcoding algorithms?? (since I'll only be > dealing with canned video) i.e. is it possible implement in an > FPGA, etc.? > > > Well I am well over my .25 cent limit, have fun > > Thanks! I'd send you your "change" but all i've got is a $10 bill ;-) > > --don Not sure what to make out of you yet other than you have to narrow down your hardware requirements a bit more . If you like look around at existing Kiosko implementations which are probably very close to what you are describing. Cumulative invoice 0.50 cents boy you drive a hard bargain 8) Cheers, Amancio
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