[MPlayer-users] RE: 2 pass with lavc, 2nd pass looks a little worse (only a little)
D Richard Felker III
dalias at aerifal.cx
Thu Aug 14 16:35:31 CEST 2003
On Thu, Aug 14, 2003 at 04:04:02PM +0300, Tuukka Toivonen wrote:
> - Use hqdn3d, I use hqdn3d=12:15:15, for good video source decrease the
> values. This greatly removes noise (at least when recording from TV)
Using temporal strength greater than the default (6) will almost
definitely create ghosts! Take a look and see. This is most noticable
with animation, but will be present whenever objects move in a
'discontinuous' fashion, i.e. more than a couple pixels per frame. It
may be a worthwhile tradeoff if your input is horribly noisy, but the
ghosts you get will negatively impact motion estimation too!
> - Use the following lavcopts (tested 25 fps, about 384 kbps, 320x240 size)
Hm? This sounds like it's for TV capture, where as Tuukka is ripping a
DVD. I seriously hope no one rips DVD at 320x240....
> Actually most of the options have almost insignificant change in to the
> image quality, trell probably gives the most increase. Here's my three-pass
And using 2 b frames probably both lowers quality AND makes it take
longer to encode... You should use at most 1 b frame, and imo none...
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