no mythtv uses it's own internal video player for playing back tv it's not mplayer or xine. it was written for mythtv, so anytime you use mythtv be it mythdora knoppmyth or mythtv on a regular distribution you are using the built in player for tv.

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Have a question search the forum and have a look at the KnoppMythWiki.

Xsecrets

Hmm - should there be any difference display/picture quality-wise when switching between the via driver and vesa? I would think the only difference would be HW accel or no acceleration - the placement of the image on the screen and color quality I would think would be the same.

Did anyone else have problems when switching to the via driver??

bummer man sorry.. =(

i should state for the record i only use the VGA out on my little box.. The one time i started playing with SVIDEO out it had a bad flicker problem.. And i prefer to use VGA instead of Svideo so i didnt spend more then 5 min trying to figure out the flicker problem. So if anyone gets working TV out either Svideo or Componet.. PLEASE add it to this thread for the sake of other people.

Hmm - I'll keep trying. If I can't get it to work through the Mobo's svid out I can always use the spare vga scan converter I have kicking around.

Thanks!
K

Folks,

Just for clarification I'm using the Epia SP13000 mobo w/CN400-based chip.

S-Video out gives me COMPLETELY garbled picture with anything but the default built-in modelines (which give me a misaligned image with discoloration at the top of the screen).

However, if I switch just the driver to vesa the picture is perfect (however no hw accel) - also if I switch to via and use CRT out instead through my extra scanconverter and dump svideo to my TV that way the picture is perfect as well w/hw accel!

There is obviously some type of isse with CN400s on this board w/openchrome acceleration and s-video out. I found a similar user here on the openchrome mailing list:
http://wiki.openchrome.org/pipermail/openchrome-users/2005-November/000029.html

Hopefully this will be resolved soon - until then I can always scan convert (I just don't like using the ugly external box when the mobo has a built-in port).

Anyone else get this type of configuration working successfully?

Later,
K

Sorry - this is the correct link:
http://wiki.openchrome.org/pipermail/openchrome-users/2006-April/000979.html

FastPlymouth,

Some links I found in my past research:
http://www.kingcot.eclipse.co.uk/unichr ... TvOut.html
http://mythtv.org/pipermail/mythtv-user ... 31526.html
http://ftp.x.org/pub/X11R7.0/doc/html/via.4.html

I think one time I tried the PVR-350 settings, but can't recall the outcome.

Good luck.

Thanks syracuse. I've seen all of those before (except for the middle one but I am using NTSC). I tried the first howto thinking that I just didn't know how to configure X for TV out properly but then realized that switching back to VESA gave me a perfect picture. Perplexing..

Hi all,
I'd like to thank gr8nash for this guide. Although it took much scratching of one's head at times, eventually I got myth to use the XvMC acceleration on my SP13000. Getting usage with 576p of 26% and 720p of 40%. I'd like to add a couple of things that tripped me up so that others might benefit.



A little example of what kind of error is expected here would have helped immensely. I was getting errors like:


Which is not what I was expecting - I though this lib would cause issues with the later XFree86 compile. I didn't think anything was getting installed and thus was trying to debug this issue.



I had to comment out the #include "xorgVersion.h" as I didn't have that file. Looking back, a cleaner way would have been to create the file with XORG_VERSION_MAJOR = 6. The result would have been the same (using the Xfree86 ansi C libs) without the compilation warning.

Once this was done, runnign xine -vo xxmc ran the test file perfectly. It took a while to getting mythtv running as smoothly. I forgot to enable VIA XvMC in TV Settings -> Playback!

So thanks to all that contributed to this and the parent thread. Finally, after nearly a year of trying (on and off), I have a decent video box with my SP13000. Now, in true mythtv style, the audio has stopped working for no reason, but that is a problem for another thread.

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In search of Unichrome Pro salvation

I think I'm getting the same problem as FastPlymouth. I managed to get hardware acceleration to work thanks to gr8nash's howto, but then my tv out stopped working. When I set the driver to "vesa" it works fine, but when I set it to "via" a get a garbled output on S-Video and Composite. I've spent a few days searching for solutions and tried different configurations for XF86Config-4 but still no joy. Has anyone managed to get this working?

Thanks.

Check out http://www.openchrome.org/trac/ticket/33.

Ivor fixed the svideo corruption issue (in theory - I haven't tested the latest cvs release to see if it indeed corrects this issue). I'll be testing it out soon.

K

These are the results of my latest attempt to get TV out working in the hope that my problem is similar to FastPlymouth's and the ticket (33) that has recently been checked in by Ivor (Openchrome) potentially fixes this issue:

svn results:



After recompiling I still get the same problem (NB. I'm using PAL) although that could be due to my XF86Config-4 settings. At the moment the screen appears on the TV too far to the right and just keeps rolling round. No problems with the same config file and the Vesa driver.

I gave up on my little box's Unichrome chip a loooong time ago and threw an Nvidia 5900LE in it instead.

There's a reason this chip is known in the tech world as 'Unicrap'.

Well, my TV is in need of replacing. The one I'm thinking of getting has a VGA socket on it so I think I'll give up on the TV out for now! Pleased to say everything else is working fine. Wife's pleased with it as it catches programme changes while the World Cup's on! Now just need to wait for DVB Radio in 0.20...

The key is pleasing the wife - if she still refers to the box as "experimental crap" you know you've got your work cut out for you

I've been getting a bit of a high-pitch whine every so often (usually a symptom of CRT ready-to-go) so I may be upgrading to a DLP screen very soon. That would alleviate the s-video issues as well as CRT woes. I still haven't tried the fix but I believe recompiling X may be slightly more work than a simple onboard s-video connector is worth.

Besides, I may be able to justify the new TV by using the "this one doesn't work with my 'experimental crap'" excuse

-K