[mythtv-users] PVR350 problems with Myth 0.25.2
Dave Pearson
lists at the-pearsons.co.uk
Mon Sep 24 10:51:12 UTC 2012
-----Original message-----
From:Neil Bird <neil at fnxweb.com>
Sent:Mon 24-09-2012 09:16
Subject:Re: [mythtv-users] PVR350 problems with Myth 0.25.2
To:Discussion about MythTV <mythtv-users at mythtv.org>;
Around about 23/09/12 19:39, George Mari typed ...
> One thing that still remains from before, however, is image ghosting - I
> am still getting 2 faint ghost images to the right of the main image
> being shown on the screen. If you're old enough to remember, it's just
> like what we used to see in analog television. It's actually fainter
> than that, so it's not unwatchable, but you do notice after a minute or so.
Hmm, I've been seeing that as well as the flashing (don't recall both at
the same time, but I stop watching immediately on the flashing). My
ghosting, when it happens, is pretty bad, sometimes enough to bin the
recording and try to catch a repeat.
I'll have to have a look at the ventilation, as (as I've said elsewhere
in the thread) I'm still on older ivtv drivers (CentOS-5) and Myth 0.24-fixes.
--
[neil at fnx ~]# rm -f .signature
[neil at fnx ~]# ls -l .signature
ls: .signature: No such file or directory
[neil at fnx ~]# exit
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I used to have ghosting, I managed to get rid of it by setting up the screen resolution correctly (720x576) in the recording profiles and by running a startup script to set some ivtv parameters whenever I reboot the box. The script is:
#!/bin/sh
### BEGIN INIT INFO
# Provides: set_ivtv_params
# Required-Start: $network
# Required-Stop: $network
# Default-Start: 2 3 5
# Description: Set IVTV Parameters to remove ghosting
### END INIT INFO
case "$1" in
'start')
/usr/bin/v4l2-ctl --set-ctrl temporal_filter=0 -d /dev/video1
/usr/bin/v4l2-ctl --set-fmt-video=width=720,height=576 -d /dev/video1
;;
'stop')
;;
*)
echo "Usage: $0 { start | stop }"
;;
esac
exit 0
This works for me, I'm in a PAL region, you would need to adjust for NTSC.
You can actually test it by running the script while watching a live tv program, when you run the script the ghosting will disappear.
Regards,
Dave.
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