[MPlayer-users] MENCODER: AuDIO OF SYNC when recording from TV

[D Richard Felker III]

On Mon, Aug 11, 2003 at 08:50:22AM +0200, Fabio Papa wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> On Friday 08 August 2003 19:30, Jindrich Makovicka wrote:
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >
> > D Richard Felker III wrote:
> > >>>No, you don't have to deinterlace since it is exactly half PAL height
> > >>> and the interlacing effect is eliminated automatically then.
> > >>
> > >>Ugh!!?? Wh.. what are you telling me, that I deinterlaced till now,
> > >> loosing much video quality, all for nothing? Godness me, please confirm!
> > >> If this is true, I will have to adjust some scripts...
> > >
> > > No, deinterlacing loses the same quality that dropping to 288 height
> > > does. BTW, if you only want 288 height, why not just capture 288 lines
> > > to begin with??? That way you only get one field, and there's no need
> > > for any resizing. It will make encoding a lot faster.
> >
> > If you have a decent machine, it can be better to capture whole PAL
> > resolution and rescale, just because it's more resistant to noise. The
> > downside of scaling to 1/2 without deinterlacing are the resulting
> > "ghosts" behind moving objects (as with linear blend deint.). If it is a
> > real 50fps interlaced material, median deinterlacer+scale to 1/2 PAL
> > would be my choice.
> That is what I'm doing right now, so it seems to be ok, after all!
> Anyway, while I got the ghosty effect with pp=lb as you suggested, I'm not too 
> sure about it when scaling without deinterlacing. I guess I could give it a 
> go, since median deint gives other stuttering problems with some Voyager 
> shows!
> Thanks anyway!

I dunno about Voyager, but ST:TNG is NOT interlaced but rather
telecined. If the same is true for voyager, you need to inverse
telecine instead of using a deinterlacer of you'll kill quality and/or
make ghosts (depending on which deinterlacer).

BTW, personally I would recommend not going to the trouble to record a
bad show like voyager... ;)

Rich