[MPlayer-users] Greyscale "tricks"
Meino Christian Cramer
Meino.Cramer at gmx.de
Thu Jul 15 08:19:13 CEST 2004
From: Jan Knutar <jknutar at nic.fi>
Subject: Re: [MPlayer-users] Greyscale "tricks"
Date: Thu, 15 Jul 2004 07:14:41 +0300
> On Thursday 15 July 2004 07:00, Meino Christian Cramer wrote:
> > My impression was, that there is no kind of colorspace which offers
> > only one channel for brightness and not only have set the rest two
> > channels set constantly set to zero but simply does not store these
> > bunch of zeroes to the file.
>
> Even when using huffyuv, which is a pretty basic form of /lossless/
> compression, the zeroes would get compressed to occupy practically zero
> space :)
>
> > hrrrmmm...my intention was to _avoid_ noise and to raise the PSNR as
> > high as possible...;)
> > Or do I understand something wrong here.
>
> The whole bit about denoising colour only when doing grayscale encoding
> was a bit silly. The lavc option gray strips out all colour, so
> anything you do to mangle colour is 'lost'.
>
> > Currently I am fighting agains blcok artefacts and against another
> > effect, from which I dont know, whether it is a bug (mine or one of
> > mencoder/mplayer) or whether it is a feature:
>
> What -lavcopts are you using?
does my mail with the exerpt from my script arrive the mailing list
???
>
> > When adjusting -- for example -- the volume I get "bars" as an osd
> > display. When finished adjsuting, this bar remains blurred on the
> > screen and will be "taken" by the underlaying movie -- be more and
> > more blurred.
>
> This sounds more like a bug... Same thing when playing with -double?
>
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
> http://mplayerhq.hu/mailman/listinfo/mplayer-users
>
More information about the MPlayer-users
mailing list