[mythtv-users] pcHDTV-5500 Audio problem
Brad Sawatzky
brad+mythtv at swatter.net
Tue Oct 2 13:34:42 UTC 2007
On Mon, 01 Oct 2007, Colin McGregor wrote:
> On October 1, 2007 12:20:29 am Brad Sawatzky wrote:
> > On Sun, 30 Sep 2007, Colin McGregor wrote:
> > > I am attempting to get a pcHDTV-5500 card up and running in a machine
> > > with two existing analog TV tuner cards The analog cards work fine. The
> > > pcHDTV card is connected to a small rabbit ear style antenna and gets one
> > > channel (CBC-HD in Toronto). The HD picture looks great, but the sound is
> > > just so much static.
> >
> > Any chance you have AC3 (and/or DTS) passthrough set in
> > 'Setup:General:Audio'?
>
> Yes, that was it, thanks. Now the question is, when watching the HD picture
> breaks up every few seconds... I will be shopping shortly for a better TV
> antenna (my analog tuners are on cable), anything else I should be on the
> lookout for?
Hmm, that could be a lot of things. I had no end of trouble getting OTA
signals to display well. I'm only a few miles from the transmitters but my
apartment is located in the worst possible place and I can't get a line of
sight from any window or balcony. I had good signal strength but multipath
reflections killed me.
Some rules of thumb:
- you don't need a special 'HTDV' antenna, anything that will pick up UHF
signals will work
- bigger is better, outdoor is better, higher is better,
- amplified can actually be worse than unamplified (noise gets boosted
too), only go amplified if your signal strength is really low
- if your transmitters are clustered, directional antennas are usually
better than omni antennas (less multipath noise)
- if you're doomed to place the antenna in a location with lots of
reflections, try pointing the (directional) antenna all over the place.
(I was only able to get a decent signal for one channel by pointing my
antenna at a building across the street that was 150degrees away from
the transmitter direction.)
Stuttering can also be caused by a slow video card. If the CPU is pegged
during playback then try getting XvMC working, it makes a huge difference:
<http://www.mythtv.org/wiki/index.php/XvMC>
> Thanks again for the setting info.
Glad I could help,
-- Brad
More information about the mythtv-users
mailing list