Mark Vojkovich wrote:
> Most PC video cards can't even come close to outputting HDTV
>on the TV-out. On the TNT, this is a function of which TV encoder
>is used and I've never seen one that could do more than 800x600.
>NVIDIA's Linux drivers don't support modes other than 640x480,
>800x600 and for the few encoders that can do it, 1024x768. I've
>never actually seen anybody do HDTV under Linux. I wouldn't
>be surprised if there weren't any drivers that supported it
>on anybody's hardware.
>
>
> Mark.
>
>
Are you really sure we are talking about the same thing? I am fully
aware of the normal tv-out on nvidia cards, doing 640x480, 800x600, or
1024x768 with the right (btree?) chip doing the *conversion* to NTSC.
This is absolutely, positively NOT what I'm talking about. When I
mentioned getting 640x480 from the TNT to the TV, it was *NOT BEING
CONVERTED TO NTSC FIRST*. It was going straight out the *hd15*
connector (not the tv-out svideo connector), straight into the TV. This
particular TV has 1 hd15 input, and 2 yuv inputs for HDTV.
Also note, that this was done, using *both* the open source, and closed
source nvidia drivers. AFAIK the open source drivers don't even touch
the btree chip and tv-out functions.
So I ask again, and eventually I will defer to your authority, but I
want to make really sure- Are we on the same page here? Actually, I
guess this is the clarifying point -
"Most PC video cards can't even come close to outputting HDTV on the ***TV-out***"
It looks to me as though you didn't read my question closely enough
"I'm talking about treating the hdtv as a fixed frequency monitor,
***taking its input from a standard hd15 monitor cable***"
-dmc
>
>On Thu, 30 May 2002, Doug McClendon wrote:
>
>
>
>>I am astounded by the lack of resources (as reported by google)
>>available regarding using HDTVs with xfree86. The only thing I found
>>was a post long ago to this list. The only person who answered said
>>"this is a question for nvidia, regarding their tv-out support".
>>
>>To cut off similar responses: I'm talking about treating the hdtv as a
>>fixed frequency monitor, taking its input from a standard hd15 monitor
>>cable (or in my case, potentially via an hd15->yuv converter from audio
>>authority).
>>
>>Currently, with my TNT, the default 60HzV 31.5khzH 21.5MHzDC modeline
>>for 640x480 provides reasonable output, except that 10-15% of the pixels
>>of the top and left of screen are not visible (i.e. off screen). Now,
>>reading the handy video mode timings FAQ, it suggests that in such a
>>case you move to a higher dot clock. Personally I don't want to
>>endanger my (brothers) hdtv. Playing around with a multisync monitor,
>>just jacking up the dotclock number in the modeline also ends up
>>increasing the vertrefresh, which I'm _guessing_ could be a bad thing on
>>the hdtv, which I'm _guessing_ is probably only going to be happy at 60hz.
>>
>>Anyway, clearly if I spent even more time than I have researching this
>>issue, and didn't fear destroying a few hdtv's, I could probably run
>>across the right modeline. But what perplexes me is that I can't seem
>>to find any resources on the issue. Its like one of the first things
>>that jumps out in my mind that I would do if I bought an hdtv. I can't
>>believe there isn't more stuff/chatter on the net regarding this.
>>
>>For instance, its a 16/9 1080i hdtv. Clearly this implies(?) that the
>>optimal progressive 60hz resolution would be 960x540(with square
>>pixels). But personally I'd be satisfied at the moment with 640x480@60p
>>or 854x480@60p, or roundabouts there. Just whatever the good dvd
>>players output???
>>
>>Anybody out there doing this? I can't be the only one?
>>
>>Anybody want to enlighten me as to how I'm wrong in my going assumption
>>that 'hdtv support' is completely a software/modeline issue? (unless
>>you care about the convenience of yuv/y-pb-pr cables coming straight out
>>of the video card).
>>
>>Thanks for any help. I'd like to have a good idea what I'm doing, and
>>what the risks to the TV are, before I do anything.
>>
>>Also, the modeline generator web pages out there don't seem to be doing
>>much for me.
>>
>>-dmc
>>
>>
>>_______________________________________________
>>Xpert mailing list
>>[EMAIL PROTECTED]
>>http://XFree86.Org/mailman/listinfo/xpert
>>
>>
>>
>
>_______________________________________________
>Xpert mailing list
>[EMAIL PROTECTED]
>http://XFree86.Org/mailman/listinfo/xpert
>
>
>
_______________________________________________
Xpert mailing list
[EMAIL PROTECTED]
http://XFree86.Org/mailman/listinfo/xpert
