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Fixes better wording. Suggestions by The Wanderer and Josh Varner.

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15032 b3059339-0415-0410-9bf9-f77b7e298cf2
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gpoirier 2005-03-31 22:31:18 +00:00
parent a9cd166c68
commit 537bbfd112
1 changed files with 14 additions and 11 deletions
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23
DOCS/xml/en/mencoder.xml
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@ -592,8 +592,8 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
low enough bitrate that <systemitem class="library">libavcodec</systemitem>
is forced to use a higher quantizer, then you're almost certainly ruining
the quality of your video.
In order to avoid that, you should probably down-scale your video, according
to the method which will be exposed later on that guide.
In order to avoid that, you should probably down scale your video, according
to the method which will be gone over later on that guide.
In general, you should avoid CBR altogether if you care about quality.
</para>
@ -810,7 +810,9 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
You may want to normalize the sound before encoding, as DVD audio tracks
are commonly recorded at low volumes.
You can use the tool <application>normalize</application> for instance,
which is available in most distribution.
which is available in most distributions.
If you're using Windows, a tool such as <application>BeSweet</application>
can do the same job.
You will compress in either Ogg Vorbis or MP3.
For example:
<screen>oggenc -q1 destination_sound.wav</screen>
@ -920,11 +922,13 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
into "high quality" mode and move on.
That would probably be nice, but unfortunately hard to implement as different
encoding options yield different qualities depending on the source material.
Anime and live action are for example two very different materials that
require different care.
That's because compression depends on the visual properties of the video
in question.
For example, anime and live action have very different properties and
thus require different options to obtain optimum encoding.
The good news is that some options should never be left out, like
<option>mbd=2</option>, <option>trell</option>, and <option>v4mv</option>.
See below a detailed description of common encoding options.
See below a for detailed description of common encoding options.
</para>
@ -991,9 +995,8 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
<listitem><para>
<emphasis role="bold">qns</emphasis>: very slow, especially when combined
with qprd.
This option will make the encoder reduce as much as possible noise due to
compression artifacts instead making the encoded video strictly match the
source.
This option will make the encoder minimize noise due to compression
artifacts instead making the encoded video strictly match the source.
Don't use this unless you've already tweaked everything else as far as it
will go and the results still aren't good enough.
</para></listitem>
@ -1048,7 +1051,7 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
<emphasis role="bold">lumi_mask, dark_mask</emphasis>: Psychovisual adaptive
quantization.
You don't want to play with those options if you care about quality.
Reasonable values may be effective in your case, but be warned this is a very
Reasonable values may be effective in your case, but be warned this is very
subjective.
</para></listitem>