[mythtv-users] Problems with Bob under XvMC

dean vanden heuvel deanv at cox.net
Sun Sep 12 18:28:40 EDT 2004

the "incredibly annoying vertical jitter" I believe is the "bob" for which bob was named.  Interestingly, it disappears when using XvMC.

I am currently using SW decode with no deinterlace because I am driving a 1080i display, which wants interlace input.  When I switch to 720p, I use SW decode and kerneldeint because of the "bob" issue...


On Sun, 12 Sep 2004 16:39:20 +1000
Rob Hillis <rob at hillis.dyndns.org> wrote:

> john roberts wrote:
> >I was told the 0.16 build of MythTV can do Bob de-interlacing while using XvMC.  So - I went to go try it today and I found it was failing saying it could not due to a refresh rate too low.
> >  
> >
> On a slightly different note, can anyone tell me exactly what the 
> advantages of Bob de-interlacing are?  Yes, the picture here seems to be 
> fairly clear and clear, though it has an incredibly annoying vertical 
> jitter on anything with sharp edges (i.e. the OSD and titles/credits)
> Which de-interlacing methods yeild the best results for people?  
> Currently I'm using Kernel which does the job nicely on my 19" CRT 
> monitor.   Bob did appear to be a bit sharper, but the jitter drove me 
> nuts... :)
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