nufan_wfk at yahoo
Feb 26, 2003, 12:29 AM
Post #5 of 6
(1075 views)
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well poo.
Playing the file in mplayer shows the interlacing
pretty bad, and the audio is out of sync
playing on windows (media player), it looks beautiful
and the audio is right on. GRR!
so.. Onwards, upwards.
-tmk
--- kevin thayer <nufan_wfk [at] yahoo> wrote:
> Thanks for the explanation. I'm checking it out :)
>
> I actually know very little about video stuff, I'm
> more of a techie/linux guy.. Any video wisdom you
> wanna pass down is fine with me :)
>
> Looks like I need to de-interlace.. I saw some
> settings relating to that, which i'll check out. The
> audio thing is what's got me right now though...
> (starts out synced, but quickly goes out of sync..
> not
> sure if the audio is going fast or the video going
> slow.. it *sounds* right so i'm blaming the video :)
>
> -tmk
>
> --- cmeyer [at] venus wrote:
> > > * video has lots of field-off-by-1 artifacts..
> by
> > this
> > > i mean that every other frame or so, the next
> > field
> > > finds its way in, leaving a combed look
> onscreen.
> > My
> > > hunch is that this is due to the video clock
> being
> > > slow or slightlyoff (since that would also
> explain
> > the
> > > audio problems too)
> >
> > I'm not sure if this is what you're describing,
> but
> > it's
> > normal for most content on NTSC to have 2 out of 5
> > frames
> > have a combed look. This is because of the 3:2
> > pulldown
> > that's applied to film (24fps) material to make it
> > compatible with the 60 fields a second used on
> NTSC.
> > Does item Nr 3 here:
> >
>
http://www.100fps.com/video_resolution_vs_fluidity.htm
> > explain what you're seeing? You can also search
> for
> > "3:2 pulldown" on
> > Google to get more:)
> >
> > The iTVC15's spec actually claims that it supports
> > inverse 3:2 pulldown,
> > aka inverse telecine, but at least in the windows
> > driver, that doesn't
> > seem to work.
> >
> > btw, if you already knew all this and what you're
> > seeing is something
> > else, ignore me and I'll bow down my head in
> shame:)
> >
> > -Claude
> >
> >
> >
> >
>
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