Mailing List Archive: bttv / nuppelvideo question

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Hi,

I have a question regarding setting up mythtv on my home system. I have the
WinTV btvv card (bt878), with the msp....something... audio chip.

The btaudio drivers give me an analogue DSP, which is 44.1kHz, 16bit MONO, and
a digital DSP which is 32kHz, 16bit stereo. Unless I missed something though,
the nuppelvideo codec expects only 44.1Khz 16 bit stereo?

Is there a way to specify a different samplerate for nuppel recording
(although from the source it appears it is a fixed sample rate), or should I
use the passthrough audio cable from bttv card to soundcard-in ?

Also, will mythtv only work with the xvideo extension? (I use an old ati card
without xvideo because the nvidia closed source drivers don't work with the
dual head setup, although I haven't used the nivida card now in almost a
year, maybe the drivers work better now :-)

While I am at the question stage :-) .. is the xmltv output only imported into
the SQL database and does mythtv use the SQL for program data? I have some
perl scripts for my tv channels (Finland), but if it's possible I'd much
rather just import it straight to mysql than make it xmltv compliant first.

Thanks for any feedback,
Best regards
Dennis
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On Monday 16 September 2002 03:52 am, Dennis Noordsij wrote:
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>
> Hi,
>
> I have a question regarding setting up mythtv on my home system. I have the
> WinTV btvv card (bt878), with the msp....something... audio chip.
>
> The btaudio drivers give me an analogue DSP, which is 44.1kHz, 16bit MONO,
> and a digital DSP which is 32kHz, 16bit stereo. Unless I missed something
> though, the nuppelvideo codec expects only 44.1Khz 16 bit stereo?
>
> Is there a way to specify a different samplerate for nuppel recording
> (although from the source it appears it is a fixed sample rate), or should
> I use the passthrough audio cable from bttv card to soundcard-in ?

The version of nuppelvideo in mythtv is very much changed from the original.
You should've looked at mythtv's source, not the original nuppelvideo
distribution. =)

So, yes, you can specify different sampling rates in the settings file.

> Also, will mythtv only work with the xvideo extension? (I use an old ati
> card without xvideo because the nvidia closed source drivers don't work
> with the dual head setup, although I haven't used the nivida card now in
> almost a year, maybe the drivers work better now :-)

Yup, only supports xvideo for now. Other output methods are possible, if
someone wants to write them.

> While I am at the question stage :-) .. is the xmltv output only imported
> into the SQL database and does mythtv use the SQL for program data? I have
> some perl scripts for my tv channels (Finland), but if it's possible I'd
> much rather just import it straight to mysql than make it xmltv compliant
> first.

Yup, it's just using xmltv as a source of information, and then dumping it
into the SQL database. If you can bypass xmltv, so much the better.

Isaac