[mythtvnz] freeview HD on an AMD X2 6000+

[Robert (MythTV)]

Hi Steven,

For the 'picture in picture' effect issue, disable the MHEG support for 
now. From my research and experimentation, there is a bug in the MHEG 
support which is due to the rendering code trying to allocate/draw the 
received content into a buffer. Sometimes this fails, and there is a 
second buffer (erroneously) created, leading to the picture in picture 
effect. I haven't been able to see how/why this happens (no real time to 
debug), but simply disabling it solves the problem. Who needs to know 
the Lotto number results anyways? (30 million and counting ... yikes!).

I'm about to do a full rebuild of my Core 2 Duo E7200 (and an E8400) 
system this weekend with Ubuntu 8.04.1 and Paul's patches - maybe adding 
some extra 'juice' with some performance related code changes I'd 
previously done, and see how it all goes. Using the E7200 I've been able 
to watch TV3 with my own loop filter patches quite happily (barring the 
front-end crashing - *grumble*), without stutter and otherwise without 
issues.

I'd already done the same as you have, limiting the frequency 
scaling/governor to prevent stuttering from the load switching CPU cores 
and frequencies. I found that this already helped markedly in keeping 
the performance constant. Also I'd set up the processing, and 
de-interlacing as I'd specified in a post I made earlier - combination 
system with analog and DVB-T, patched/updated v4l drivers, and all that 
is working well.

I'm using an Abit I-N73H HDMI GeForce7100 (nForce 630i) Motherboard 
($110 is the cheapest on PriceSpy), and a friend is using the comparable 
Asus version. Being a fully integrated solution, it works quite well, 
and I've had few (if any) issues with it. Video performance is excellent 
(given no H.264 hardware assisted acceleration anyways), HDMI, D-Sub, 
Optical SP/DIF, 7.1 Channel Audio, and the performance of the 
board/chipset itself can't be beat for the price.

http://www.abit.com.tw/page/en/motherboard/motherboard_detail.php?fMTYPE=LGA775&pMODEL_NAME=I-N73H

Granted, this is an inexpensive solution, but the only thing it doesn't 
have which you want is Composite/Component/S-Video ... which potentially 
could be served by either a D-Sub converter (hack), or by using a 
different nVidia card with built-in Video Out, since the motherboard has 
a PCI-E x 16 slot available.

Regards,
   Robert.

---

Steven Ellis wrote:
>
> My X2 6000+ was delivered just an hour or so ago and now have working 
> TV3 - subject to a couple of minor niggles below.
>
> I'm running Ubuntu 8.04 with Paul's most recent patched MythTV release 
> and loopfilter disabled in my playback profile. The motherboard is an 
> M2NPV-VM with 2G Ram and a Hauppauge HVR-900 USB tuner.
>
> [snip]
>
> Ok so a lot more speeds to play with but for the purposes of testing I 
> changed the governor to performance which locks the CPU at its fastest 
> speed.
> echo "performance" > 
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 
>
> [snip]
>
> 2. Occasionally I get a picture in picture effect when I switch 
> between 720p and 1080i channels which I have two copies of the same 
> video feed on screen, one of which is in a small box in the top left 
> hand of the screen.
>
> [snip]
>
> So I have something that works, but I wouldn't consider it customer ready.
>
> I think I need to consider an Intel compatible alternative, but can't 
> find a board with integrated Composite/Component/SVideo as well as 
> DVI/HDMI in the Intel space.
>
> Steve
>
> Steven Ellis - Technical Director
> OpenMedia Limited
> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.ourshack.com/pipermail/mythtvnz/attachments/20081014/2472f14a/attachment.htm