[mythtv-users] Need help with HDTV Out Jitter
steve.frank at bevcore.com
Tue Dec 21 19:52:41 UTC 2004
Thanks Doug. That modeline results in little or no change. Are you doing
960X540p out of DVI? It appears that's where the issue is. The N frame
is about 8 pixels above the N+1 frame. Interlacing and running at 1080i
gets the frames a little closer to each other, but not converged.
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Doug Larrick
Sent: Monday, December 20, 2004 9:20 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Need help with HDTV Out Jitter
Steve Frank wrote:
> Hey gang, I've read Jarod Wilson's guide to HDTV, and currently I'm
> having a dickens of a time with getting X to agree with some of the
> settings I'm passing it.
> I'm using FC1 with XFree86 4.0.3-55. (I'd update, but this puppy is
> really stable and stability is king for MythTV). I have a Gigabyte
> Geforce FX5200 with DVI out, and I'm using a DVI->HDMI interface on a
> Mitsubishi TV that is capable of 480p and 1080i input on the HDMI
> interface. I'm using the Nvidia driver 6629, the latest as of this
> Here's relevant sections from my XF86Config--most of this is verbatim
> from Jarod's Howto.
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Mistubishi"
> ModelName "48515 48inch HDTV"
> Option "dpms"
> HorizSync 33.75
> VertRefresh 59.94
> Mode "960X540p"
> DotClock 37.26
> HTimings 960 976 1008 1104
> VTimings 540 542 548 563
> Flags "+HSync" "+VSync"
Following is the 540p modeline I use... I believe this to be close to
the ATSC standard, and so might work better for you. If not, try using
a modeline generator program.
Modeline "540p" 39.956 960 1020 1100 1184 540 550 551 563 +hsync
+vsync # 39.956 MHz 33.75 kHz 59.94 Hz
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