richardwoelk at yahoo
Oct 20, 2007, 7:09 PM
Post #2 of 2
(363 views)
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Tom Weichmann wrote:
> Hello,
>
> I'm having motion blur problems with a PVR-150 on openSUSE 10.2. The card
> looks OK unless I am watching something like sports where there is lots of
> fast motion. The best example is when you watch sports and there is
> the "crawl" at the bottom of the screen showing scores from other games etc.
> That looks terrible.
>
> I was using ivtv 0.80 but upgraded to ivtv 0.10.6 hoping for a difference to
> no avail. I'm using the default openSUSE 10.2 - 2.6.18 Kernel. I've
> eliminated the possibility of it being a problem with my output card as I
> played the video on two different boxes both on TV out and on the monitor.
> If you don't mind a 3Mb download I posted a 5 second clip of my video at the
> following address:
>
> http://www.weichmann.org/food/output.mpg
>
> and here is a screenshot:
>
> http://www.weichmann.org/food/xine_snapshot-1.png
>
> I am kind of thinking that this is an interlacing issue, but I'm not sure
> where to start. I don't understand deinterlacing that much, but I thought
> that a interlaced video is what I should have for a regular TV or a computer
> monitor?
>
> Can anyone help?
>
> Tom
>
>
Tom,
What you are seeing is interlacing artifacts, sometimes called
combing or mice teeth.
This website explains it well.
http://www.100fps.com/
Another issue, Even if you are outputting to a tv, most of the time you
still have to de-interlace on playback.
most video playback programs can't output fields, and most video cards'
tv out can't sync to the video stream.
so what has to happen, is
captured video ----------------> playback program ------------> video
card ----------------> tv
interlaced
de-interlace
re-interlace
Hope this helps,
- Richard
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