Chris Pinkham wrote:
I agree, the strict option does help a lot. It's hard to be objective
about it but it seems just about as good as it was when the ALL option
was first introduced. I'm wondering if my picture is confusing it. My
cable box produces light and dark lines that scroll up the picture
constantly. Very subtle, but it might confuse the commercial scanner.
Curtis
Yes, wavy lines or static can play havoc with the detection. If you
have a noisy signal, the "blank" frames won't seem blank since they
may have very dark pixels and a some very light pixels so the code
won't pick them up. I tried to work around this one time by assuming
the frame was blank if only X% was light while the rest was dark,
but that caused false positives as well like for instance a nighttime
scene of people driving in a car where most of the frame is dark but
there are a few light spots. It's definitely an art but getting
better over time I believe.
Is there a chance that those blank detection values for light and dark
could be made to be read from the DB and controlled from setup? I have
a couple channels that suffer from slightly poorer signal than others
and the strict detection only really fails me on those poor channels.
I'd love to see if minor tweaks to the numbers made a difference here
but I'm not 100% sure where in the code to change them and thought maybe
that's a place where configuring them in setup would help people get
better results (which large disclaimers about changing the defaults
affecting commflag reliability)
Kevin
_______________________________________________
mythtv-users mailing list
mythtv-users@mythtv.org
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
