[mythtv-users] PAL AND NTSC Supported Tuner
Brian Wood
beww at beww.org
Mon Oct 16 20:15:48 UTC 2006
On Oct 16, 2006, at 1:06 PM, Daniel Kristjansson wrote:
> On Mon, 2006-10-16 at 08:31 -0600, Brian Wood wrote:
>> You say your TV will only handle NTSC, so tuning a PAL signal and
>> recording it would not be of any help to you.
>>
>> You need to standards convert the PAL signal in order to watch it on
>> an NTSC set, a very different matter from simply recording it, and it
>> has nothing to do with the tuner card.
>
> MythTV will do the conversion for you, you just need to configure your
> video card to only output NTSC. Then MythTV will do the scaling from
> PAL resolutions to NTSC and will convert the framerate on the fly.
> You should configure MythTV to use a deinterlacer though, kernel
> deint is probably your best bet for watching PAL or SECAM recordings
> on an NTSC TV. Don't use bob-deint, the result will look bad.
>
> I don't know if MythTV can convert from NTSC to PAL without hickups,
> but PAL to NTSC is not a problem.
>
> AFAIK most tuners will work with any of the common analog standards,
> but someone on the ivtv or v4l lists can probably help with this
> better than anyone on the MythTV mailing lists. The same model,
> say "PVR-250", usually has many generations which use many
> different tuners. Some tuners are better than others.
>
Wow, I didn't know Myth would do that, but I guess it makes sense
that it could/would.
Any idea how much CPU horsepower this would require? As I said
previously this used to require a $10K device, but most of that cost
was for the frame memory, and that much RAM is very cheap nowadays.
I'm talking about the days when RAM came on DIP chips :-)
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