[MPlayer-users] Digital camcoder

[D Richard Felker III]

On Sat, Nov 29, 2003 at 03:55:19PM +0100, Christian Berger wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
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> Am Freitag, 28. November 2003 20:42 schrieb Grzegorz Borowiak:
> > Do NTSC really suck so much? How do Americans cope with this? Do they have
> > a quality loss when converting to/from mpeg/divx?
> 
> Well I suppose their biggest problem is that bizarre framerate of 29.97 or 
> something. To make it all worse some systems are using 30fps (especially 
> monocrome systems)

No, this doesn't matter at all. The problem is 4:1:1 sampling.

> > > quality loss when converting to/from mpeg/divx). Dealing with
> > > interlaced video really sucks too, so you want a progressive camera.
> >
> > Yes, interlace is bad.
> 
> I wouldn't say so, interlacing is an interresting way of compression, you get 
> twice the framerate for the same data.

You get 60 hideously ugly frames per second instead of 30 nice pretty
ones, and you lose the ability to resample framerate, to rescale
video, to take still pictures, etc. etc. etc. Interlacing is an
abomination.

> Anyhow mencoder can deinterlace 
> interlaced video extremely well.

ROTFL!! None of MEncoder's deinterlacers are at all acceptable. li and
ci just interpolate from even fields, throwing away half the
framerate and wasting space. lb, l5, and fd create horrible blurring
or ghosts. md destroys all local extrema.

> If it's intended to stay "video" then I'd 
> definitely go for interlacing, if you plan to use it for progressive displays 
> then deinterlace it or try to get real progressive equipment.

Never deinterlace, it's just destructive. Always get real progressive
equipment.

Rich