[mythtv-users] mythtv+pvr250+pcHDTV and it WORKS

[J. Donavan Stanley]

Doug Larrick wrote:

> John Roberts wrote:
>
>> When I watch ABC (which is 720p) it's fantastic - nothing but a
>> fantastic ATSC signal. BUT - when I watch CBS and NBC I can see (what
>> I think is) an interlace effect.  In other words I can see the scan
>> lines when objects are moving. So - since CBS and NBC are 1080i - I'm
>> thinking it much be the difference between the two ATSC formats. How
>> can I correct this?  I'm using an nVidia 5500 with XvMC enabled
>> feeding my Samsung DLP (Progressive display) at 720p (1280x720p -
>> which is the native mode/size for the TV).
>
>
> Yes, you're seeing interlaced effects.  If you were using normal Xv 
> output you could use one of the deinterlacing filters on your 1080i 
> channels (onefield, linearblend (the default), or kerneldeint 
> (probably too much CPU for HDTV).  But since you're using XvMC, it 
> should automatically be giving you the equivalent of onefield.  If you 
> run 'mythfrontend --verbose playback' do you see a line like this:?


XvMC has never done any sort of deinterlacing on any of my boxes.  It's 
one of the major reasons I don't use it.