Re: [mythtv-users] Re: 1000th picture quality question SOLVED?

Mark L. Cukier Fri, 18 Mar 2005 07:05:00 -0800

Howard:

I recompiled with OpenGL and XvMC support last night... no luck. The actual quality of the picture DOES seem to be better... but, the video is extremely jerky. With XvMC ENALBLED, it's totally unwatchably-jerky. With XvMC disabled, it's pretty annoyingly jerky. Basically... no luck on this front.

1) I'm grabbing at 720x480, and about 8500 b/s

2) I'm running and Intel P4 2.4C (with HT). I'll have to check my idle time tonight...

3) I tried that previously, and it did look better... I didn't try it again last night...

What's most annoying of all, is... I setup up X to go out on my PVR350, and TV looks pretty good (almost as good as my TiVo.. definitely comprable and watchable). However, I have that annoying black bar/blue line on the right side of my picture. As of now, no one seems to have a working solution to that issue.

So, that makes me pretty convinced that it is, indeed, an nVidia issue and not a Myth Issue. But how to address it is beyond me....

- Mark

Howard Cokl wrote:

Mark and Chad and anyone else watching this,
No luck. Still having occasional lockups, I'm thinking it's xvmc but if I disable xvmc my CPU shits the bed if I'm watching HDTV. AFAIK the picture quality may have always been sub par and I didn't notice, but now that I have noticed I want to fix it. I got my AA9A60 today and set that up but may do it over again tomorrow and set up an interlaced modeline so I can see if I can get rid of mythtv deinterlace. Some questions: 1. what resolutions are you using? I think my freestyle captures @ 640x480 so myth has to bump that up for me since my resolution is now 720x510. 2. What kind of CPU do you have and what is the load on it when watching live TV? I have an Athlon XP 2700+ and watching live TV using the freestyle puts me at about 87% idle. 3. Have you tried cat /dev/video0 > test.mpg and then watching that?
Thanks
Howard
--- "Mark L. Cukier" <[EMAIL PROTECTED]> wrote:
Howard:
Any Luck?
- Mark
Howard Cokl wrote:
Mark, I may have been too hasty. Couldn't fully test

last

night since my wife is a Survivor freak and had to watch. The little testing I did the picture

quality

is as close as I think I can get it. However now

this
morning I have had 2 hard lockups, can ping the box
but that's all.  I'll keep you posted.
--- "Mark L. Cukier" <[EMAIL PROTECTED]> wrote:
Howard:
I'll have to try recompiling tonight... did you alter any other settings.pro options? (besides XvMC?).
Just so I'm clear, in the end you ended up keeping
MythTV set to use XvMC?
And, you're settings.pro had:
XvMC on, OpenGL on.
Thanks! Looking forward to giving this a try!
- Mark
Howard Cokl wrote:
I've been messing with this most of the day,

benefit of being a stay at home

dad, and I think I have mine figured out. I
turned

off xvmc in MythFrontend

Setup and in my xorg.conf, this caused the a

greater load on the CPU but the

picture in Myth is the same as straight from

DirecTV. I think the reason

that DVD playback looked so good while TV looked

uncrisp is that the default

playback command has mplayer use -vo xv instead

of

-vo xvmc.

But I need xvmc, I don't think my athlon XP 2700+

can handle HDTV without it.

So I followed this thread

http://www.gossamer-threads.com/lists/mythtv/users/116194

all except the modeline, recompiled mythtv with

OpenGL, and added Option

"XvMCUsesTextures" "True" to my

/etc/X11/xorg.conf

. This seems to give me a

picture that is the same as directv and watching

live tv puts the cpu at 86%

idle using encoder 1 which is the freestyle card.

Of course I'm going to have to dick around with

it

some more since my AA 9A60

should be here this week but now it seems that

all

is good.

On Tuesday 15 March 2005 19:32, Chad Delatte

wrote:

Alright, excuse me for my newbness here, but yes

I
meant to say the itvc16 chipset.
I'm trying to establish that the problem we are
having
is with the newer revision of the pvr 250.
So far we have the following list of people with
the

new cards and have the same issue with
sharpness.
hojoloco, You also have a newer design card and maybe the

cause
of the problems.
1. Me        ITVC-16
2. hojoloco  ITVC-15 (but it's a frestyle)
3. dan       ITVC-16
ross.campbell , I did everything in your list
except

for 1. try a different decoder card (my M-179 had
poor

quality compared to my pvr-250) ----Have one on ordser, but think I got ripped off on ebay 2. upgrade/downgrade your video driver and hack

on

the

config files to optimize for the best resolution

and

refresh rate for outputting recorded TV -----

Not

sure
=== message truncated ===
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____________________________ *Mark L. Cukier*, /Design Engineer/ P&E Microcomputer Systems 710 Commonwealth Avenue Boston, MA 02215 _________________________________ e-mail: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> phone : (617) 353-9206 x19 fax : (617) 353-9205 _________________________________

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Re: [mythtv-users] Re: 1000th picture quality question SOLVED?

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