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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