[mythtv] detecting activity - not signal.

Steve Daniels steve.p.daniels at googlemail.com
Mon Sep 24 06:44:04 UTC 2007


On 23/09/2007, Peter Hartmann <ascensiontech at gmail.com> wrote:
> My cable company has been in the habit of rebooting my cable box
> literally every day.  As a result a lot of my recorded programs just
> have a black screen.  If anyone has dealt with this could you help?
> I've seen a lot of talk about detecting signal level in the archives.
> I think that the signal level is strong while I'm recording black
> screen, so I don't think that's the issue. If no solution exists, I
> was thinking of running a script from cron to analyze a short sampling
> from /dev/video0 and initiate the correct lirc code to turn on by
> digital video cable box if the right information is gathered .    This
> depends upon being able to sample  /dev/video0 while mythtv may be
> recording.  Not sure if that's gonna work.  Anyway my ideal script
> will either make use of some yet unknown spectrum analyzer or get
> statistics from a an encoder log file from perhaps ffmeg. Anyone care
> to comment?
>
> Thanks,
> Peter

Have you had a look for discrete "on" IR codes for your cable box? You
could just fire one of these on every channel change to ensure the
cable box is on?

HTH

Steve Daniels


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