[MPlayer-DOCS] XviD encoding guide

Rich Felker dalias at aerifal.cx
Sat Jun 25 04:41:46 CEST 2005

On Fri, Jun 24, 2005 at 09:07:12PM -0400, The Wanderer wrote:
> Rich Felker wrote:
> >On Thu, Jun 23, 2005 at 03:18:07PM +0200, Guillaume POIRIER wrote:
> >
> >>The Wanderer wrote:
> >>
> >>>Hmp. Looks like I may have been wrong all this time about what
> >>>"vhq" actually means - I took it to be an acronym for "very high
> >>>quality", intended to signify that "this option improves quality
> >>>per unit filesize", but if the description in the XviD section of
> >>>the man page (which I actually hadn't read before) is accurate
> >>>then it appears to stand for something like "vertical/horizontal
> >>>quantizer", which would be much different.
> >>
> >>I'm not sure what it could mean other than Very High Quality. One
> >>guy
> >
> >No. Like all the options starting with v, the v stands for video.
> >This is because -lavcopts has options for both audio and video.
> >Naturally hq stands for high quality.
> Hmm. How does it make sense for it to take a parameter, as XviD's
> version of the option does? I've gone over the man page's description of
> XviD's vhq option again, and this time I think I may understand a little
> better what it actually does (unlike the previous time, which produced
> my comment quoted above), but something about it still seems weird to
> me.
> I find it interesting that XviD's vhq description talks about motion
> vectors, whereas libavcodec's vhq is one possible setting for mbd, whose
> description talks about macroblocks. Do they in fact work differently?
> In any case, thank you for the information.

Forgive me, I was being stupid. I didn't realize this is the xvid vhq
and not the lavc one. I assume they just copied the name from lavc
without any care for what it meant..


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