[mythtv-users] My Perennial Problems with XvMC

Matt Mossholder matt at mossholder.com
Sat Sep 16 12:20:03 UTC 2006

On Sat, 2006-09-16 at 21:02 +0930, Mathew Elliot wrote:
> >Enter GeForce 6200.  Nvidia claims XvMC is fully supported on this model so
> I should see some serious >improvement.  I replace the old 4200 in the >FC4
> box and fire up Myth.  I enter live TV and go to my favorite
> >.HD channel and BAM!  Reacts exactly the same as before--for about 3
> seconds.  Then the picture starts >deteriorating in what some people may
> have described as "tearing."  A few sections of the picture change to a
> >different color (or scene maybe--it's hard to tell).  The sections grow
> until the entire screen is covered >in garbage, and I think the system
> crashes/stalls,  haven't really let it go this far lately, but I'm pretty
> >sure something bad happens.   
> According to the nvidia forums the 6200 is not actually XvMC enabled under
> 8756 – or from what I can gather under 8774 either...  - I know because I’ve
> been struggling to get mine doing XvMC…
> Refer to this thread -
> http://www.nvnews.net/vbulletin/showthread.php?t=68030&highlight=XvmC+6200
> Mine produces the same errors as you've posted later and the same errors
> with mplayer as is in the linked thread.... damnit I bought this card cause
> it was the cheapest supposedly XvMC enabled PCIe card... and now it's not -
> apparently all the cards >6600 work fine with XvMC... ripped off!
While I was unable to get XvMC to work with any regular success on a
6200 under 0.19, I do have it working under 0.20.

2006-09-14 23:57:52.949 VideoOutputXv: XvMC version: 1.1
2006-09-14 23:57:52.949 VideoOutputXv: XvMCTex: Init failed
2006-09-14 23:57:52.950 VideoOutputXv: @ j=1 Looking for flag[s]:
2006-09-14 23:57:52.950 VideoOutputXv: Adaptor#0: NV17 Video Texture has
flag[s]: XvInputMask XvImageMask 
2006-09-14 23:57:52.950 XvMCSurfaceTypes::find(w 720, h 480, chroma 1,
vld 0, idct 1, mpeg2, sub-width 0, sub-height 0, disp, p<= 274, 2740
<=p, port, surfNu
2006-09-14 23:57:52.950 Trying XvMC port 274
2006-09-14 23:57:52.950 Found a suitable XvMC surface 0
2006-09-14 23:57:52.950 VideoOutputXv: Grabbed xv port 274
2006-09-14 23:57:52.950 VideoOutputXv: XvMC surface found with IDCT
support on port 274
2006-09-14 23:57:52.950 VideoOutputXv: XvMC Adaptor Name: 'NV17 Video
2006-09-14 23:57:52.958 Using audio as timebase
2006-09-14 23:57:52.958 Video timing method: SGI OpenGL
2006-09-14 23:57:52.958 Refresh rate: 16644, frame interval: 33366

Not sure what was preventing it from working under .19, but since the
only thing I did was upgrade Myth, I am inclined to rack it up to user
error. Probably messed something up in my build (I build from .deb


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