[mythtv-users] motion blur with Bob, XvMC (nvidia) on 1080i content run at 576i

David Schlenk mythtv at schdav.org
Thu May 15 17:49:33 UTC 2008


On Thu, May 15, 2008 at 12:38 PM, Misty P <mistyp at thekorn.net> wrote:
> David Schlenk wrote:
>> The problem
>> So my crappy TV doesn't really handle 1080i very well. Its blurry and
>> squished due to it being 4:3 not 16:9. (If someone wants to suggest
>> how to unsquish it that's cool, although I'm fine running at 576i).
>
> I believe the answer to that question was just posted to another thread:
>
> http://www.gossamer-threads.com/lists/mythtv/users/334186
>
>> So my questions: Should I be running at a different virtual
>> resolution? How would I do that? Why isn't BOB doing its thing? I've
>> read that if something isn't clocked high enough it won't work but
>> there aren't any errors in the output that would point me in that
>> direction.
>
> Remember that Bob can only run if the display frame rate is 2x the source.
> i.e. if your TV is 60 hz, and the (deinterlaced) signal is 30 hz.  If the
> incoming picture is 60 hz (i.e. 720p) and your tv refreshes at 60 hz, bob
> can't do anything for you.
>
> But if you 'unsquish' your display, and run it at say 1024x768 at 60 hz,
> that may open up a whole raft of possibilities.  (Going to be mostly
> dependent on what your TV will accept.)
>
>
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OK, so, if my TV can't support something that would make bob work, and
onefield isn't supported by XvMC, what can I do? Am I nuts or do I
remember there being other options pre-.21? Or does mythbuntu only
have onefield and bob?


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