[mythtv-users] frontend for HDTV

[Michael Drons]

----- Original Message ----
From: Justin The Cynical <cynical at penguinness.org>
To: Discussion about mythtv <mythtv-users at mythtv.org>
Sent: Wednesday, May 21, 2008 3:55:39 AM
Subject: Re: [mythtv-users] frontend for HDTV

Michael Drons wrote:
> I am looking to do HDTV with my backend.  I am pulling the HD content from the firewire port currently.  My current backend/frontend is a AMD, here is the cpuinfo:
> user at mythtv:~# more /proc/cpuinfo
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 6
> model           : 8
> model name      : AMD Athlon(tm) XP 1500+

*snip*

> 
> Backend has no issue recording the content, cpu load is around .20 - .30 (from top).  The server can not play it back.  I have it connected to a TV via VGA cable (TV has VGA input).  The CPU goes to 100%, due to X windows.  I have tried to configure XvMC but I cant get it to work.  I believe my nvidia card does not support it.  It is a 
> 04:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2) (prog-if 00 [VGA])

*snip*

> So at minimum I need a new video card, which is about $80.  I am limited in what I can purchase since I only have PCI and AGP slots available in current backend/frontend.  Is a new video card going to solve my problems or should I be looking to purchase a new frontend?  I have on order a homerun to add additional HD recording.  The backend also has a PVR 250 and PVR 500.  

You didn't state where you are located, but going by the IP in the 
headers, I'm guessing around Boston MA.


You have it right, you really should get a newer video card.  I do not 
believe that the GeForce2 series support XvMC.

As for the video card, at the moment, some kind of NVidia card in the 
5000 to 7000 series range (anything higher is useless as NVidia doesn't 
support XvMC under Linux on the 8000 and higher series of cards).  Since 
you are probably running an AGP system, a 5000 or 6000 series are 
probably your only real options, both of which are not that expensive, 
assuming your motherboard can do 8x AGP speeds.

Looking at newegg, the cheapest fanless AGP 8X only card is a MSI 
NX6200AX-TD256H for $33.49 (and currently has a $10 MIR).

The cheapest 4x/8x card is a XFX PVT44AYAJG GeForce 6200 512MB for $54.99

Either card would be silent and support XvMC just fine.

Anther thing to look at is your Linux install.  You didn't say which 
distribution you are using, or desktop environment, if any, window 
manager, etc.  Killing off unneeded daemons or running a lightweight 
window manager will work wonders for freeing up CPU for HD playback.

Myself, I've been able to get HD playback on a 1 ghz T-Bird core AMD and 
a GeForce MX440 using a stripped down custom compiled Linux install (LFS 
for those who might wonder).
_______________________________________________
mythtv-users mailing list
mythtv-users at mythtv.org
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users


I am running Slackware 12 as the distro and blackbox for the window
manger.  I have 1G of RAM in the backend.  When I play th HD content to
a PC using MythTV Player (for Windows) it works great and the backend
load is under .2.  I did notice that during commflag the CPU goes to
.9. 

This is the card I purchased... ZOGIS FX5500 256M AGP GeForce FX 5500 256MB 128-bit DDR AGP 4X/8X Video Card

http://www.newegg.com/Product/Product.aspx?Item=N82E16814131014

Thanks, Mike