[mythtv-users] pcHDTV and HDTV
Brandon Beattie
bbeattie-maillist at linkexplorer.com
Tue Aug 26 18:38:37 EDT 2003
You are using the wrong input color type. Find an option in your
display device menu that lets you toggle between RGB/Component (It may
be called something besides component) This toggles the display device
into RGB and YCrCb (or whatever that acronym is). DVI-I can be either
RGB(Used for VGA/computers) and YCrCb for component video.
--Brandon
On Tue, Aug 26, 2003 at 03:01:55PM -0700, Steele Price wrote:
> I must have bought the wrong DVI cable because I had all sorts of trouble
> getting DVI out to work. I got only green and blue out using a DVI-I cable.
> I wasn't going to go out and get another $50 cable just to see if it worked
> since I already had the transcoder. But for crispness of display, I saw no
> real difference between the two.
>
> You can set an interlaced 1080i modeline in XFree86 and it will translate it
> to 560 for you so I'm not sure what you mean there.
>
> Here are my active modelines if anyone needs them.
>
> Section "Monitor"
> Identifier "Sony 34XBR800"
> HorizSync 28-75
> VertRefresh 50-72
> # Modeline "1080i" 74.25 1920 1960 2008 2200 1080 1090 1110
> 1125 +vsync -hsync interlace
> ModeLine "720p" 74.25 1280 1328 1384 1666 720 722 728 766
> # nice widescreen gaming resolution
> Modeline "1000x600" 65.880 1000 1176 1216 1464 600 652 657
> 750 -hsync -vsync
> Modeline "540p" 40.806 960 1036 1116 1216 540 550 551 563
> +hsync +vsync
> ModeLine "480p" 32.432 720 736 800 858 480 484 492 525
> EndSection
>
> Section "Screen"
> Identifier "Radeon 7200"
> Device "Generic Video Card"
> Monitor "Sony 34XBR800"
> DefaultDepth 24
> SubSection "Display"
> # replaced all the defaults with custom timings
> #Modes "1024x768" "800x600" "640x480"
> Depth 24
> Modes "720p" "1000x600" "540p" "480p"
> EndSubSection
> EndSection
>
> I have commented out 1080i because I never use it/didn't like it.
> If you use the "interlace" keyword it does the translation for you into 540.
> +-xsync definately make a difference, and you should try making small
> changes with xvidtune, but be very careful and only make small changes, if
> you get some things to over/underscan better for you then take them and
> apply them to your modeline settings.
>
> Steele Price
> CTO
> Digital Dreamshop
> http://xtcp.net
>
>
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org]On Behalf Of Brandon Beattie
> Sent: Tuesday, August 26, 2003 2:43 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] pcHDTV and HDTV
>
>
> Rule 1 for display device/resolution/(interlaced/progressive) is your
> computer should be displaying whatever your true HDTV's native
> resolution is. Most devices are 720P for HDTV's. Also, 1080i HDTV's
> are often 1920x540, not 1920x1080. There are several cards, mostly ATI,
> that allow you to hook component video cables onto them. If your HDTV
> has a 15 D-Sub (VGA) connector just use that and any video card. I know
> of few HDTV's that only have component video connections.
>
> --Brandon
>
> On Tue, Aug 26, 2003 at 03:28:32PM -0500, Brian Foddy wrote:
> > This is encouraging. I've been waiting for a card like this for many
> > months now. Now that is available and a known commodity, I can start
> > planning a machine around it.
> >
> > One question I haven't done much research on, not directly related to
> > the card but never the less very important...
> > What output options are there to drive from a graphics card to a HDTV
> > using component cables? My HDTV doesn't have DVI inputs, so I need
> > either a card or converter with component outputs. If its a native
> > video card, then I assume it has to be running in the native
> > 1920x1080 interlaced mode? Etc, etc, etc. Again, it may not
> > be a big issue, I've just haven't done the research yet.
> >
> > Thanks,
> > Brian
> >
> > On Tue, 26 Aug 2003, Brandon Beattie wrote:
> >
> > > I have a card, but I'm also the one who wrote the basic support so I'm
> > > biast. ;-) You can watch HDTV, change channels, seek backwards (Forward
> > > may have a bug that I'm checking into). The main problem we're facing
> > > is you have to use an NTSC TV program guide for HDTV, and shows do not
> > > always match from NTSC to ATSC/HDTV. Once a grabtv for hdtv is written
> > > to parse html on titantv.com and fill a myth database with information I
> > > consider that most of the final goal. Fixing bugs and handling no/poor
> > > ATSC signals is another feature. But it does work.
> > >
> > > For hardware, I don't like hardware decoding as you can't do video
> > > overlay for OSD. You will need about a 2.4Ghz+ system to be safe
> > > (Although 1.8Ghz is enough to just play a HD stream). If you use
> > > hardware decoding a 1.2-1.4 ghz should be fine. The performance needs
> > > to be improved in MythTV. Another issue at times (How myth does it's
> > > scaling I believe).
> > >
> > > --Brandon
> > >
> > > On Mon, Aug 25, 2003 at 11:18:02PM -0700, Brandon Bremen wrote:
> > > > The new pcHDTV came out just the other day as you guys probably saw. I
> > > > read where mythTV got some preliminary support for it, and I am
> > > > wondering how that is coming. Also, what hardware is need to output at
> > > > HDTV resolutions? I've been lurking for a few days and noticed that
> > > > Jarod has an HDTV. How is the performance? And has anyone had a chance
> > > > to actually try the pcHDTV card?
> > > >
> > > > Thanks,
> > > > Brandon
> > > >
> > >
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> > >
> > >
> >
>
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