Audio / TV problem
Bill Davidsen
davidsen at tmr.com
Thu Mar 6 23:47:07 UTC 2008
max bianco wrote:
>
>
> On Thu, Mar 6, 2008 at 11:47 AM, Bill Davidsen <davidsen at tmr.com
> <mailto:davidsen at tmr.com>> wrote:
>
> I have some ATI "HDTV Wonder" cards which I would like to use for video
> capture. The problem is that on all of the systems in which I would like
> to use the card, it somehow interferes with the audio, such that I lose
> the audio capability, and alsamixer only shows the cx88 capture function
> of the card.
>
> I could live with that if the capture were good, but it seems garbled,
> and recording a short section of the content captured gives very low
> quality audio results. I've done capture with xawtv and ffmpeg, and I
> can just play the captured audio over the network to another machine
> with sound, no configuration changes needed.
>
> I can put the card in other machines and it works perfectly, with the
> limitation that the machines in which it works are servers, not
> something I can use for casual things.
>
> If anyone has a thought on making this work, I'll give it a look. Since
> it happens on three machines, I didn't post a lot of dmesg stuff,
> without the TV card the usual sound hardware shows up, with the card
> dmesg shows no indication that normal audio even exists.
>
> All machines, working and not, use the built-in audio on the
> motherboard.
>
>
>
> Do the machines on which it doesn't work have a chipset in common?
Not a bit, mix of Celeron, K7, and early pre-HT P4, various on board
audio chipsets. And all work with other video boards, it's just the HD
board which is a problem. I have three NTSC cards which work just fine.
> What about the machines on which it does work?different chipset?same
> chipset?
One P4 with HT, one E6600 Core Duo.
> It works only on servers? maybe a service that needs to be up and
> running is not or some other service is possibly interfering? Compare
> running services on the servers and workstations?Just some ideas off
> the top of my head.
>
Off hand I'd say thanks for the questions, but the answers aren't all
that revealing.
--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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