[MPlayer-DOCS] [PATCH] New and Improved DVD to MPEG4 guide (menc-feat-dvd-mpeg4)

[Diego Biurrun]

Jason Tackaberry writes:
> 
> Let me know if any changes are required before this patch can be merged.

This looks extremely good and I will merge it ASAP if you could make
some slight adjustments.  You use (American style) two spaces after a
period while the rest of the docs use (European style) one space.  I
use two spaces myself, but for consistency reasons I would prefer you
used one as in the rest of the docs.  You also added some trailing
whitespace, but that's really minor, I can also remove it with one
Emacs command.

A few (small) comments below:

> +  When cropping, you'll want to increase the y-offset by
> +  half the difference of the new height so that the resulting video is taken
> +  from the center of the frame.

This is slightly confusing to me.  What exactly is the difference of
the new height?  A difference is always between two things.  Is it new
vs old height?

> +  The <option>softskip</option> filter is only included in very recent
> +  versions of <application>MPlayer</application>.  If your version doesn't
> +  have <option>softskip</option>, you'll want to use the
> +  <option>filmdint</option> filter instead.

This is not necessary IMO since this guide is younger than
vf_softskip.

> +  yields higher quality than the defaults. You might try experimenting with
> +  with this parameter (refer to the man page for the possible values) as

One with should be enough ;-)

> +  source material.  For example, if you find <systemitem
> +  class="library">libavcodec</systemitem> produces too much blocky
> +  artifacting, you could try *cmp=10.  (This comparison function, NSSE, is
> +  currently only available in CVS versions and is experimental.)

Again, this guide is younger than NSSE.

Maybe you could say that setting a *cmp option to 10 selects NSSE as
comparison function, it's not immediately obvious.


A thought that occurred to me now is that it might be interesting to
have a section that explains how to best maximize quality on a fixed
size encode, since it's quite common to target a CD or two as size.

Thanks

Diego