[mythtv-users] Myth on the Epia M10000

[Curtis Stanford]

On Jan 11, 2005, at 7:29 AM, BARKER, Paul wrote:

> Hello all
>
> If you read my posts of last week you'll remember that I've been 
> trying to build a frontend on an Epia M10K system to replace my 
> current large frontend box that used to be a combined fe/be.
>
> I'm having big problems trying to get live TV and recordings to run 
> without either audio out of sync messages (which results in dropped 
> frames) or prebuffering pauses.
>
> The current fe is an Athlon XP1800 with 512Mb of RAM and my LiveTV 
> recording profile is full PAL res at 720X576. (The b/e uses a PVR250)
>
> On the Epia box if I try to watch live TV or a recording recorded at 
> this resolution I get choppy playback. If I drop the resolution to 
> 360x576 things are pretty smooth. My CPU isn't pegged and I've turned 
> off swap, switched to alsa and upgraded to the latest alsa kernel mods 
> all as suggested in different posts on this list. I'm intending to use 
> MythCVS so I can use the CLE266 h/w mpeg stuff and have tried various 
> builds of the Unichrome drivers and MythCVS with varying results. I've 
> also put another soundcard in and disabled the onboard sound. I'm at a 
> point where I seem close to getting this to fly but it's taking up 
> rather a large amount of time.
>
> I guess my basic questions are 
>
>  1) Is anyone out there running Myth using the Unichrome drivers on an 
> M10K and using native PAL resolution without problems ?
>
> 2) If yes do you use the onboard sound ?
>  3) Am I in overkill land with the 720 x 576 recording profiles ? (I 
> was trying to minimise any filtering or scaling)
>
> If I know this *should* work and is possible I'll keep plugging away 
> but I'd like to know if I should just stop banging my head on the 
> brick wall and switch to a lower resolution ;-)
>
> Cheers
>
> Paul
>
FYI:

1) Yes but I'm NTSC. I'm running 720x480 resolution. Using about 20-25% 
CPU.
2) Yes, I use onboard sound with the ALSA driver built in to kernel 
2.6.10
3) I don't think so.

I'm not sure what the problem is but I don't see any showstoppers to 
using that resolution with an M10K. I guess you have to consider your 
mpeg bit rate as well.

Curtis

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