[mythtv] Re: Whats wrong with myth
Lincoln Dale
ltd at interlink.com.au
Sun Mar 20 09:04:12 UTC 2005
Hamish,
i know you're in Melbourne - i'm also in Melbourne also.
i wonder how much of this may be related to a less-than-ideal aerial?
i had previously dabbled with Hauppage WinTVs - analog capture cards -
which worked relatively well.
the only channel which wasn't great was Channel 31.
with a DVB-T card, reception was nowhere near as good. signal strngth /
SNR was around 30-40%.
i bought a new "decent" higher-gain antenna from Radio Parts
(http://www.radioparts.com.au/ProdView.aspx?popup=1&Product=00720351) and
replaced existing cabling with quad-shielded cabling and F-type
connectors. this increased the digital signal strength / SNR to around 85-90%.
At 06:11 PM 20/03/2005, Hamish Moffatt wrote:
>Specifically:
>- Seven HD has choppy audio with audio buffer underrun messages to
> the console at a rate of a few per second. I'm using ALSA drivers
> and Myth's ALSA audio support.
SEVEN HD works fine here (Malvern East).
i'm not using ALSA - am using OSS.
>- ABC HD (which is different from ABC in the US, please note!)
> works OK if I go directly to it when starting HDTV, else the audio
> is choppy. I get some ffmpeg errors spit out on the console every
> few seconds even when the audio is working fine; they are ac-tex
> errors and the like.
>
>- SBS HD has breaking picture and audio, with lots of ffmpeg errors.
i get occasional errors with SBS. haven't looked into why.
>I didn't try 9 or 10.
both 9 & 10 work just fine.
>It doesn't appear to be CPU-bound; if anything while watching Seven with
>breaking audio (but OK picture) CPU usage seems lower than other stations.
>I have an XP 2600+, GF4 MX440 video (not using XvMC).
XP2800+ as backend here & part-time frontend. uses a cheap ATI card (R220
based i think).
>I have been content with the digital SD stations until now but recently
>bought an HDTV, so would like to get this going at some point. I can
>help debug but don't know where to start.
while i've found HDTV to "mostly work", its pretty much irrelevant in this
country at present.
while i have now just procedure a lovely 24" Dell LCD monitor (1900 x 1280
resolution), there ain't ever going to be anything better than SD for the
forseeable future in the living room with the trusty 68cm TV. :)
cheers,
lincoln.
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