[mythtv-users] myth and hdtv questions
Steve Adeff
adeffs at gmail.com
Tue Nov 22 16:45:14 EST 2005
On Tuesday 22 November 2005 16:34, Chris Trown wrote:
> I've been trying to get smooth playback on my myth box. I'm so
> close... I get choppiness and I guess it's called "combing". The image
> is interlaced(-v playback says it's 1080i). The best I can describe it
> is one line of the image is fine, but the next is "smeared" or stretched
> to the right. This only happens when there is motion in the image. I
> also get choppiness.
thats combing. I assume your seeing a 3:2 pattern? (3 progressive, 2
interlaced, etc etc etc)?
this is called telecine and an IVTC filter would be required to get rid of it,
or just deinterlace the combed frames. You end up with a 30fps still but with
1 repeated frame (due to deinterlacing the combed frames). This is most
likeyl what is causing your choppiness as well.
> I've tried various combinations of options and de-interlacing
> filters. I can get one problem to go away, but not both.
see above
> Do I need to use the xine-hd package that's in the Downloads
> section at www.pchdtv.com?
no, and mplayer and VLC will play it fine using their normal releases.
> Is it neccessary to use xrandr to switch video modes? Right now
> my desktop is running at 1280x720. Will it get scaled appropriately?
> If so, would scaling like this obviate XvMC support?
xRandR for switching video modes = yes
will what get scaled? scaled to what?
Steve
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