[mythtv-users] Jumpy playback with PVR-250?

[Scott Pouliot]

Alright....well it's definitely not a CPU issue then.  I've got a console
window running on Desktop 1 in KDE...and Myth playing Live TV on Desktop 2.
I can hear it skipping, but the CPU usage is as follows:

2.7% user   1.7% system  0.0% nice   0.0% iowait   96.6% idle

150MB of RAM free as well....
0k used on the Swap....

The load average is showing as:  0.05, 0.21, 0.22

Sounds pretty strange to me....LoL  No CPU activity, no memory
issues....still choppy/jumpy/jittery video/audio.   

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of stan
Sent: Friday, January 16, 2004 12:36 PM
To: 'Discussion about mythtv'
Subject: Re: [mythtv-users] Jumpy playback with PVR-250?

On Fri, Jan 16, 2004 at 11:40:18AM -0500, Scott Pouliot wrote:
> Not sure what the problem could be here, but I setup my Myth box 
> probably 2 weeks ago....and everything has been fine thus far.  Now 
> today, while I'm watching either recordings or Live TV.....it starts 
> skipping really badly every 2 or 3 minutes.  The video and audio both 
> start going REAAAAALLLLY slow almost like every other frame is being
played with a pause in between.
> Very odd...
>  
> I know the PVR-250 doesn't have a decoder for playback, but no 
> recording is going on in the background at this point in time (other 
> than the standard live TV buffering).  I've got my Live TV Recording 
> profile set to MPEG2-PS with a bit rate of 2200 (max 4400)...audio set 
> to 48.  Pretty low compared to the defaults (I think?)
>  
> My hardware:
>  
> Dell Dimension 4100 - PIII 933 w/ 384MB RAM 20GB Boot Drive 160GB 
> Video Drive nVidia 32MB Video card (No TV-OUT) Hauppauge PVR-250 OEM 
> ($88 one from eBay)
>  
> If I copy the output files from recorded shows and view them on my 
> Windows XP box....everything is fine.  So it almost sounds like a CPU 
> issue?  Since I'm a Windows guy at heart (but trying to convert) I'm 
> not up on too much task troubleshooting in Linux yet....
>  
Start off by running top on a console while playing back. Look at CPU usage.

This will give you an idae where you are on that.

A freind just puilt a PIII 833MHZ machine, and it won't play back with
jerkiness, and it's naxed out on CPU usage, at that time.

--
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