[Theora-dev] Re: PC-based video server

Andrey Filippov theora at elphel.com
Wed Jan 26 14:52:00 PST 2005

> So you want to re-encode smaller versions of the camera streams?

Yes, counting that in most cases there will be only one person watching
the cameras so the total data sent out should be approximately one full
computer screen. So form each Theora stream (let's say it is
2048x1536x12fps) DC components are always decoded and sent out as 256x192
preview windows. Then operator can send request for PTZ  - select window
and increase zoom - we could use just discrete settings (1-2-4-8) and use
first AC coefficients with abbreviated versions of IDCT.


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