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PostPosted: Tue Feb 14, 2006 11:27 am 
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Joined: Fri Sep 09, 2005 11:02 pm
Posts: 38
Location: Gaithersburg,MD
Since I have asked this in other forums and not goten an answer yet, I guess I will try again.

I have a mythtv setup running on a nvidia graphics card via DVI to a 720p Samsung DLP. Knoppmyth RA522 was the install.

What I would like to do is have my Mythbox output native signals via DVI.

I know this means that I need modelines for
720x480i
720x480p
1280x720p (I have one that actually works well.)
1920x1080i

All of wich need to be for DVI output

Nextly I know that I would have to make some adjustments in the myth menus to output the differnet resolutions.

Plus I would need to set things like interlace and deinterlace right?

Could someone please tell me how to do this? Step by step would be awesome!

Like tell me some working modelines and how and where to add them.

I really need this information just layed out for me as weeks and weeks of searches have just let to more annoyance then progress. (Some of the people who chime int o help spend more time being nasty to you thne actually helping.)

Any help would be great.


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PostPosted: Tue Feb 14, 2006 12:52 pm 
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Joined: Mon Jan 02, 2006 9:39 am
Posts: 21
Location: Fort Worth, TX, USA
This is a duplicate thread that was answered in the /Linux/MythTV section.


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PostPosted: Tue Feb 14, 2006 8:08 pm 
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Joined: Fri Sep 19, 2003 7:05 pm
Posts: 5088
Location: Fontana, Ca
Wrong. You don't frelling asking again. Have some fricking patience. If need be, later 'bump' the same thread.

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cesman

When the source is open, the possibilities are endless!


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PostPosted: Tue Feb 14, 2006 9:01 pm 
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location: California
TheGIZ

Below are my notes on my configuration -- might help solve some of your problems.

marc

My general strategy is to play 1920x1080 and 720x480 recordings at the 1080i setting so that my TV will do the de-interlacing. 1280x720 is played at 1280x720 resolution. I don’t use the DVI connector because the Samsung xx67 series will not accept 1920x1080 through the DVI connector.

XVMC off, using libmpeg2: Playback is very stable. CPU utilization averages 80% - 90% during HDTV playback. Insignificant CPU utilization on SDTV playback.

XVMC on, not using libmpeg2: CPU utilization averages 60% during HDTV playback. Stability varies based on content: Very stable playing SDTV; reasonably stable playing 1080i HDTV; very unstable playing 720p HDTV. The issue is the classic “OSD” problem with XVMC enabled.


----------------------------------------------------------------------------------------------------
My configuration:

Knoppmyth version R5A30.2
System: Dell P4-2.4GHZ, 512MB ram
Video card: Powerspec FX5200
Tuner#1: Motorola DCT-6200 connected via firewire
Tuner#2: Hauppauge PVR-250
Video signal source: Comcast cable
Nvidia driver version: 6629
XVMC is turned off
Display: Samsung HLR-5067 50” DLP TV
Connection via VGA, accepts resolutions up to 1920x1080i
Key XF86Config-4 elements:
Code:
Section "Monitor"
        Identifier      "Monitor0"
        Option  "DPMS"  "false"
        Option  "IgnoreEDID"    "True"
        Option "XvmcUsesTextures" "True"
#
# First displaysize is for 1080i; second is for 720p
#
#       DisplaySize     624     351
         DisplaySize     416     234

   -----------
Also in “Section monitor”

        HorizSync 32 - 50
        VertRefresh 50 - 60
        ModeLine        "1920x1080" 74.184 1920 1960 2008 2200 1080 1084 1094 1124 interlace
        ModeLine        "1280x720" 74.176 1280 1320 1376 1652 720 722 728 750
        ModeLine    "1024x768" 65.000 1024 1048 1184 1344 768 771 777 806 -hsync -vsync


   -----------
In “Section Screen”

        SubSection "Display"
                Depth     24
     Modes "1920x1080" "1280x720" "1024x768"
        EndSubSection



Key setup elements under “Utilities/Setup -> Setup->appearance”

1. Screen settings (2nd screen): Width=1232; height=704; x-offset=0; y-offset=8
2. Video mode settings (3rd screen): “Separate video modes for GUI and TV playback” is selected. The GUI display is configured as “GUI=1280x720; video output=1920x1080; rate=any; aspect=16x9”. I have filled in one row under “Overrides for specific video sizes”. The first row is “X=1280; Y=720; Output=1280x720; Rate=any; aspect=default”.

Key setup elements under “Utilities/Setup -> Setup->TV->Playback”

1. General Playback (1st screen): Deinterlace=off; use libmpeg2 for decoding=on; enable realtime priority threads=off; use video as timebase=off; extra audio buffering=on; aspect override=off.
2. Hardware decoding settings (5th screen): Use PVR-350=off; enable openGL vertical sync=off; use hardware XvMC mpeg decoding=off; use HW XVMC VLD decoding (via only)=off.

Recording profiles
1. MPEG2 Encoders->“Default” is used to record all 4x3 material from my PVR-250. Settings: Resolution=720x480; stream-type=mpeg-2 PS; Aspect ratio=4:3; bitrate=3300; audio sampling rate = 48000; audio bitrate-384.

At the bottom of /etc/init.d/bootmisc.sh
Code:
/sbin/hdparm –c3 -d1 -u1 -M254 /dev/hda
/sbin/hdparm –c3 -d1 -u1 -M254 /dev/hdb


Finally, if you are going to use XVMC you should also set the OSD fadeout to zero. This is done by editing /usr/share/mythtv/themes/blueosd/osd.xml and changing
Code:
  <fadeaway>30</fadeaway>


To

Code:
  <fadeaway>0</fadeaway>



----------------------------------------------------------------------------------------------------
Other factoids you may find helpful:

1. Ben Johnson’s post at http://mysettopbox.tv/phpBB2/viewtopic. ... vidia+6629 is an excellent source of useful information.
2. nvidia driver version 7174, 8174 & 8178: All 3 versions failed to work with any of the 1080i modelines I tried, including the modeline that works with 6629.
3. Displaying 720p recordings under 1080i modeline with XVMC enabled results in hyper-jumpy, unwatchable video.
4. Displaying 1080i recordings under 720p modeline with XVMC enabled, while watchable, results in enough interlace/de-interlace artifacts to make it an “annoying” configuration to watch.
5. I was running with the disks in “quiet mode” (“-M128”) for a while, but I had quite a few problems with glitching during playback. I made several configuration changes, including turning off acoustic “quiet” mode and the problems appear to have reduced significantly. Of course, since I made multiple changes, I can’t be certain that “quiet mode” was the true root cause. At some point I will go back and run the experiment to assess if I can use “quiet mode” successfully while simultaneously recording two streams and playing back one.

Marc


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PostPosted: Wed Feb 15, 2006 7:17 am 
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Joined: Fri Sep 09, 2005 11:02 pm
Posts: 38
Location: Gaithersburg,MD
Cesman...

A Farscape Fan?

Actually I have asked this exact question several times over the last couple of months.

I have3 asked it here and I think I worded it to include DVD and I was deleted.

In AVS forum I get lots of rude comments.

Now when I actually figure something out I post the answer...
http://mysettopbox.tv/phpBB2/viewtopic. ... highlight=

That link in the other thread where they point out that thing about the 1080i being 1088. Well that actually helps.. I can use that.

"You already posted this!"
"You don't put enough time on searching!"
"You are a pothetic noob!"

Gee thanks... Did I get right up in your nose and say something that affended you or something?

A little decorum please.


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PostPosted: Wed Feb 15, 2006 8:01 am 
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Joined: Tue Nov 08, 2005 7:31 am
Posts: 195
Location: Secret Lair
Here's a recent post that tries to list Cecil's rules of order: http://mysettopbox.tv/phpBB2/viewtopic.php?t=7919

BTW - It's quite rare for him to cuss like that. That means you managed to annoy him more than all but 1 or 2 people in the last few months...


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PostPosted: Wed Feb 15, 2006 11:27 am 
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Joined: Fri Sep 19, 2003 7:05 pm
Posts: 5088
Location: Fontana, Ca
A little decorum? A little decorum? I'm sorry... I must have lost it all spending a great deal of my time trying to save you a great deal of your's.

_________________
cesman

When the source is open, the possibilities are endless!


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 Post subject:
PostPosted: Wed Feb 15, 2006 3:02 pm 
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Joined: Fri Sep 09, 2005 11:02 pm
Posts: 38
Location: Gaithersburg,MD
What the heck?

Wow.

Well I guess if I have any further questions I will make sure not to ask.

I really did not mean to water anyone off but this is just plain rude.

I appologise for what ever trespass you may have interperted. Seriously. I don't mean for any bad blood.


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