mirror of https://github.com/mpv-player/mpv
Fixes suggested by Diego
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15932 b3059339-0415-0410-9bf9-f77b7e298cf2
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@ -2731,7 +2731,7 @@ codec</title>
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<listitem><para>
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<emphasis role="bold">qpel</emphasis>
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Raise the number of candidate motion vectors's by increasing
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Raise the number of candidate motion vectors by increasing
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the precision of the motion estimation from halfpel to
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quarterpel.
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The idea is to find better motion vectors which will in return
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@ -2754,8 +2754,8 @@ codec</title>
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<emphasis role="bold">gmc</emphasis>
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Tries to save bits on panning scenes by using a single motion
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vector for the whole frame.
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This almost always raise PSNR, but significantly slows down
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encoding (significantly slows down encoding).
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This almost always raises PSNR, but significantly slows down
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encoding (as well as decoding).
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Therefore, you should only use it when you have turned
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<option>vhq</option> to the maximum.
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<systemitem class="library">XviD</systemitem>'s GMC is more
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@ -2824,7 +2824,9 @@ codec</title>
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</row>
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<row>
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<entry>NTSC DVD</entry>
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<entry>352x240*</entry>
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<entry>352x240<footnote id='fn-rare-resolutions'><para>
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These resolutions are rarely used for DVDs because
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they are fairly low quality.</para></footnote></entry>
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<entry>MPEG-1</entry>
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<entry>1856 kbps</entry>
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<entry>48000 Hz</entry>
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@ -2868,7 +2870,7 @@ codec</title>
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</row>
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<row>
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<entry>PAL DVD</entry>
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<entry>352x288*</entry>
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<entry>352x288<footnoteref linkend='fn-rare-resolutions'/></entry>
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<entry>MPEG-1</entry>
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<entry>1856 kbps</entry>
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<entry>48000 Hz</entry>
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@ -2902,10 +2904,6 @@ codec</title>
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</tbody>
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</tgroup>
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</informaltable>
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<para>
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* These resolutions are rarely used for DVDs because they are fairly low
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quality.
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</para>
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<para>
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If your movie has 2.35:1 aspect (most recent action movies), you will
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@ -2924,7 +2922,7 @@ codec</title>
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<para>
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DVD, VCD, and SVCD also constrain you to relatively low
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GOP (Group of Pictures) sizes.
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For 30 fps material the largest allows GOP size is 18.
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For 30 fps material the largest allowed GOP size is 18.
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For 25 or 25 fps, the maximum is 15.
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The GOP size is set using the <option>keyint</option> option.
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</para>
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@ -3032,8 +3030,8 @@ codec</title>
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<para>
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If the audio sample rate in the original file is not the same as
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required by the target format, sample rate conversion is required.
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This is acheived using the <option>-srate</option> and
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<option>-af lavcresample</option> options together.
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This is achieved using the <option>-srate</option> and
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-af lavcresample options together.
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</para>
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<para>
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DVD:
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@ -3076,7 +3074,7 @@ codec</title>
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<option>ac3</option> is most commonly used for DVD.
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PCM audio may also be used for DVD, but this is mostly a big waste of
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space.
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Note that mp3 audio is not compliant for any of these formats, but
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Note that MP3 audio is not compliant for any of these formats, but
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players often have no problem playing it anyway.
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</para></listitem>
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@ -3178,7 +3176,7 @@ codec</title>
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options to lavcopts, such as <option>trell</option>,
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<option>mbd=2</option>, and others.
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Note that <option>qpel</option> and <option>v4mv</option>, while often
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useful with MPEG-4, are not usable in MPEG-1 or MPEG-2.
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useful with MPEG-4, are not usable with MPEG-1 or MPEG-2.
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Also, if you are trying to make a very high quality DVD encode, it may
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be useful to add <option>dc=10</option> to lavcopts.
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Doing so may help reduce the appearance of blocks in flat-colored areas.
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@ -3200,11 +3198,11 @@ codec</title>
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<sect2 id="menc-feat-vcd-dvd-audio">
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<title>Encoding Audio</title>
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<para>
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VCD and SVCD supports MPEG-1 layer II audio, using one of
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VCD and SVCD support MPEG-1 layer II audio, using one of
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<systemitem class="library">toolame</systemitem>,
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<systemitem class="library">twolame</systemitem>,
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or <systemitem class="library">libavcodec</systemitem>'s mp2 encoder.
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The libavcodec mp2 is far from being as good as the other two libraries,
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or <systemitem class="library">libavcodec</systemitem>'s MP2 encoder.
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The libavcodec MP2 is far from being as good as the other two libraries,
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however it should always be available to use.
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</para>
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