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Diffstat (limited to 'DOCS/xml/en/mencoder.xml')
| -rw-r--r-- | DOCS/xml/en/mencoder.xml | 112 |
1 files changed, 97 insertions, 15 deletions
diff --git a/DOCS/xml/en/mencoder.xml b/DOCS/xml/en/mencoder.xml index 37d340d003..911fa6ec61 100644 --- a/DOCS/xml/en/mencoder.xml +++ b/DOCS/xml/en/mencoder.xml @@ -109,9 +109,10 @@ mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac copy -o movie.avi <title>Encoding to MPEG format</title> <para> <application>MEncoder</application> can create MPEG (MPEG-PS) format output -files. It's probably useful only with libavcodec's <emphasis>mpeg1video</emphasis> -codec, because players - except <application>MPlayer</application> - expect MPEG1 -video, and MPEG1 layer 2 (MP2) audio streams in MPEG files. +files. It's probably useful only with <link linkend="ffmpeg">libavcodec</link>'s +<emphasis>mpeg1video</emphasis> codec, because players - except +<application>MPlayer</application> - expect MPEG1 video, and MPEG1 layer 2 (MP2) +audio streams in MPEG files. </para> <para> @@ -237,7 +238,7 @@ must not be broken. You may need to fix your input AVI files first, as described <para> <link linkend="ffmpeg">libavcodec</link> provides simple encoding to a lot of interesting video and audio formats (currently its audio codecs are -unsupported). You can encode to the following codecs: +unsupported). You can encode to the following codecs (more or less up to date): <informaltable frame="all"> <tgroup cols="2"> @@ -248,6 +249,9 @@ unsupported). You can encode to the following codecs: <row><entry>mjpeg</entry><entry> Motion JPEG </entry></row> +<row><entry>ljpeg</entry><entry> + Lossless JPEG + </entry></row> <row><entry>h263</entry><entry> H263 </entry></row> @@ -263,18 +267,33 @@ unsupported). You can encode to the following codecs: <row><entry>msmpeg4v2</entry><entry> pre-standard MPEG-4 by MS, v2 (used in old asf files) </entry></row> - <row><entry>wmv1</entry><entry> +<row><entry>wmv1</entry><entry> Windows Media Video, version 1 (aka WMV7) </entry></row> +<row><entry>wmv2</entry><entry> + Windows Media Video, version 2 (aka WMV8) + </entry></row> <row><entry>rv10</entry><entry> an old RealVideo codec </entry></row> <row><entry>mpeg1video</entry><entry> - MPEG1 video :) + MPEG1 video + </entry></row> +<row><entry>mpeg2video</entry><entry> + MPEG2 video </entry></row> <row><entry>huffyuv</entry><entry> lossless compression </entry></row> +<row><entry>asv1</entry><entry> + ASUS Video v1 + </entry></row> +<row><entry>asv2</entry><entry> + ASUS Video v2 + </entry></row> +<row><entry>ffv1</entry><entry> + FFmpeg's lossless video codec + </entry></row> </tbody> </tgroup> </informaltable> @@ -459,16 +478,16 @@ way! <para> MPEG4 has an unique feature: the video stream can contain its needed aspect -ratio. Yes, just like MPEG1/2 files (DVD, SVCD). Regretfully, there are +ratio. Yes, just like MPEG1/2 (DVD, SVCD) and H263 files. Regretfully, there are <emphasis role="bold">no</emphasis> video players outside which support this -attribute. Except <application>MPlayer</application>. +attribute of MPEG4, except <application>MPlayer</application>. </para> <para> -This feature can be used only with <emphasis role="bold">libavcodec</emphasis>'s -<systemitem>mpeg4</systemitem> codec. Keep in mind: although <application>MPlayer</application> -will correctly play the created file, other players will use the wrong aspect -ratio. +This feature can be used only with <link linkend="ffmpeg">libavcodec</link>'s +<systemitem>mpeg4</systemitem> codec. Keep in mind: although +<application>MPlayer</application> will correctly play the created file, +other players will use the wrong aspect ratio. </para> <para> @@ -477,12 +496,75 @@ See the man page for the usage of the <systemitem>cropdetect</systemitem> and <systemitem>crop</systemitem> filters. </para> -<formalpara> -<title>Usage</title> <para> +Usage <screen>mencoder sample-svcd.mpg -ovc lavc -lavcopts vcodec=mpeg4:autoaspect -vf crop=714:548:0:14 -oac copy -o output.avi</screen> </para> -</formalpara> +</sect1> + +<sect1 id="custommatrices"><title>Custom inter/intra matrices</title> + +<para> +With this feature of <link linkend="ffmpeg">libavcodec</link> you are +able to set custom inter (I-frames/key frames) and intra (P-frames/predicted +frames) matrices. It is supported by many of the codecs: +<systemitem>mpeg1video</systemitem> and <systemitem>mpeg2video</systemitem> +are reported as working. +</para> + +<para> +A typical usage of this feature is to set the matrices preferred by the +<ulink url="http://www.kvcd.net/">KVCD</ulink> specifications. +</para> + +<para> +The <emphasis role="bold">KVCD "Notch" Quantization Matrix:</emphasis> +</para> + +<para> +Intra: +<screen> + 8 9 12 22 26 27 29 34 + 9 10 14 26 27 29 34 37 +12 14 18 27 29 34 37 38 +22 26 27 31 36 37 38 40 +26 27 29 36 39 38 40 48 +27 29 34 37 38 40 48 58 +29 34 37 38 40 48 58 69 +34 37 38 40 48 58 69 79 +</screen> + +Inter: +<screen> +16 18 20 22 24 26 28 30 +18 20 22 24 26 28 30 32 +20 22 24 26 28 30 32 34 +22 24 26 30 32 32 34 36 +24 26 28 32 34 34 36 38 +26 28 30 32 34 36 38 40 +28 30 32 34 36 38 42 42 +30 32 34 36 38 40 42 44 +</screen> +</para> + +<para> +Usage: +<screen> +$ mencoder input.avi -o output.avi -oac copy -ovc lavc -lavcopts inter_matrix=...:intra_matrix=... +</screen> +</para> + +<para> +<screen> +$ mencoder input.avi -ovc lavc -lavcopts +vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37, +12,14,18,27,29,34,37,38,22,26,27,31,36,37,38,40,26,27,29,36,39,38,40,48,27, +29,34,37,38,40,48,58,29,34,37,38,40,48,58,69,34,37,38,40,48,58,69,79 +:inter_matrix=16,18,20,22,24,26,28,30,18,20,22,24,26,28,30,32,20,22,24,26, +28,30,32,34,22,24,26,30,32,32,34,36,24,26,28,32,34,34,36,38,26,28,30,32,34, +36,38,40,28,30,32,34,36,38,42,42,30,32,34,36,38,40,42,44 -oac copy -o svcd.mpg +</screen> +</para> </sect1> </chapter> |