On Nov 9, 2009, at 10:36 PM, Noam Rathaus wrote:
There are US solutions that are non-Apple to do what I am looking
for, but I
can't find them in Israel.
Apple bases their operating system on BSD and it is open source. Their
GUI is not, but there is a decent port of X Windows, and a user
community supported upgrade to the Apple base product. Open source
software works very well on it and there a lots of things ported to it.
To answer another posting, there will always be a delay switching
channels on a digitial TV system. While analog TV sent a new frame
every 1/25 of a second, digital TV uses the key frame concept. Every
once in a while an entire frame is sent, the rest of the time, the
frames are sent as the difference between the current frame and the
previous one. So you won't get a picture until the next key frame is
received and decoded.
How often a key frame is sent depends upon the boradcaster. Israel
digitial TV is an attempt at squeezing the most you can get out of a
single signal, so the key frames are sent less frequently. I've never
timed it, but it seems like a long time.
The other problelm is a design feature of MythTv. In order to make
live pause and backup work, MythTv always records what you are
watching. The video you see is a playback of the recorded video.
Depending upon the compression you use to record and the speed of your
processors, the delay can be 2-3 seconds (or more).
Geoff.
--
geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendel...@gmail.com
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