[Openchrome-users] Introduction and first question

[Dave Cohen]

Hi all,

I'm new to this list.  But I've spent some time reading the archives and 
website over the past week.  I'm putting together my first mythtv box.  I'm a 
software guy, not a hardware guy, so this is a learning experience for me.  My 
goal is to build a nice DVR and get rid of this lousy box from Comcast.

Anyway I'm starting with a Commell LV-667 board, because I got a good deal on 
craigslist.  It's got a VIA CN400, with VT1625.  I'm having a hard time making 
it do everything it's supposed to do.  I'll probably have a number of 
questions for this list, but I'll start with one about XvMC.

I've read that openchrome supports XvMC on this board, but I can't get mythtv 
to use it.  I've tried to follow documentation, mostly 
http://www.mythtv.org/wiki/index.php/XvMC.  But instead of an image to the 
screen I get messages like "Desired video renderer 'xvmc-blit' not available" 
from my mythfrontend.

I've also seen this thread: http://wiki.openchrome.org/tikiwiki/tiki-
view_forum_thread.php?comments_parentId=5036&topics_threshold=0&topics_offset=16&topics_sort_mode=title_desc&topics_find=&forumId=1
But I'm not sure exactly what's being said there.  Some sites claim that with 
openchrome and my board I should get XvMC, but I'm not sure anyone's actually 
done it.

I've also compiled the xvmcinfo code from the mythtv.org URL above.  It's 
output is pasted below.  I don't grok all of it, but I'm concerned that it 
lists only MPEG1.  Shouldn't I see MPEG2 as a format?

I appreciate any guidance with this stuff, even if it's "go out and get another 
board".  Let me know if there's changes I can make to the drivers, or patches 
to test.  I'm using the latest openchrome from svn on Arch linux.

-Dave


xvmcinfo output:

Xv version 2.2
XvMC version 1.1

screen number 0
   info for adaptor 0 [XV_SWOV]
      number of XvMC surface types: 2

      info about surface 0:
         max_width=2048
         max_height=2048
         subpicture_max_width=2048
         subpicture_max_height=2048
         chroma_format:
            XVMC_CHROMA_FORMAT_420
         mc_type:
            format                   : MPEG1
            accelaration start from  :
         flags:
            MOCOMP XVMC_OVERLAID_SURFACE XVMC_BACKEND_SUBPICTURE

      info about surface 1:
         max_width=2048
         max_height=2048
         subpicture_max_width=2048
         subpicture_max_height=2048
         chroma_format:
            XVMC_CHROMA_FORMAT_420
         mc_type:
            format                   : MPEG1
            accelaration start from  :
         flags:
            MOCOMP XVMC_OVERLAID_SURFACE XVMC_BACKEND_SUBPICTURE