diff options
author | diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2008-10-14 22:28:52 +0000 |
---|---|---|
committer | diego <diego@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2008-10-14 22:28:52 +0000 |
commit | 07589781f454a0fa320a2925cc043465b1b512da (patch) | |
tree | 27cc8170e0a18330b85fb7f8198c3a966ab9d82c /DOCS | |
parent | c27f7192370cff9c70b84fed7f6904015db60c34 (diff) |
Remove some pointless and/or outdated codec documentation sections.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27773 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'DOCS')
-rw-r--r-- | DOCS/xml/en/codecs.xml | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/DOCS/xml/en/codecs.xml b/DOCS/xml/en/codecs.xml index 909efa2ef9..057591daba 100644 --- a/DOCS/xml/en/codecs.xml +++ b/DOCS/xml/en/codecs.xml @@ -15,64 +15,6 @@ of our homepage. </para> <para> -The most important ones above all: -</para> - -<itemizedlist> -<listitem><para> - <emphasis role="bold">MPEG-1</emphasis> (<emphasis role="bold">VCD</emphasis>) and - <emphasis role="bold">MPEG-2</emphasis> (<emphasis role="bold">DVD</emphasis>) video -</para></listitem> -<listitem><para> - native decoders for <emphasis role="bold">all DivX variants, - 3ivX, Microsoft MPEG-4</emphasis> v1, v2 and other MPEG-4 variants -</para></listitem> -<listitem><para> - native decoder for <emphasis role="bold">Windows Media Video 7/8</emphasis> - (<emphasis role="bold">WMV1/WMV2</emphasis>), and Win32 DLL decoder - for <emphasis role="bold">Windows Media Video 9</emphasis> - (<emphasis role="bold">WMV3</emphasis>), - both used in <filename>.wmv</filename> files -</para></listitem> -<listitem><para> - native <emphasis role="bold">Sorenson 1 (SVQ1)</emphasis> decoder -</para></listitem> -<listitem><para> - native <emphasis role="bold">Sorenson 3 (SVQ3)</emphasis> decoder -</para></listitem> -<listitem><para> - <emphasis role="bold">3ivx</emphasis> v1, v2 decoder -</para></listitem> -<listitem><para> - Cinepak and <emphasis role="bold">Intel Indeo</emphasis> codecs - (3.1,3.2,4.1,5.0) -</para></listitem> -<listitem><para> - <emphasis role="bold">MJPEG</emphasis>, AVID, VCR2, ASV2 and other hardware - formats -</para></listitem> -<listitem><para> - VIVO 1.0, 2.0, I263 and other <emphasis role="bold">H.263(+)</emphasis> - variants -</para></listitem> -<listitem><para> - FLI/FLC -</para></listitem> -<listitem><para> - <emphasis role="bold">RealVideo 1.0 & 2.0</emphasis> from - <systemitem class="library">libavcodec</systemitem>, and - <emphasis role="bold">RealVideo 3.0 & 4.0</emphasis> codecs using - RealPlayer libraries -</para></listitem> -<listitem><para> - native decoder for HuffYUV -</para></listitem> -<listitem><para> - Various old simple RLE-like formats -</para></listitem> -</itemizedlist> - -<para> If you have a Win32 codec not listed here which is not supported yet, please read the <link linkend="codec-importing">codec importing HOWTO</link> and help us add support for it. @@ -196,103 +138,6 @@ There are also many advanced features in the H.264 specification which have nothing to do with video quality per se; many of these are not yet implemented in <systemitem class="library">x264</systemitem>. </para> - -<itemizedlist> -<title>Encoder features</title> - <listitem><para>CAVLC/CABAC</para></listitem> - <listitem><para>Multi-references</para></listitem> - <listitem><para> - Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions) - </para></listitem> - <listitem><para> - Inter P: all partitions (from 16x16 down to 4x4) - </para></listitem> - <listitem><para> - Inter B: partitions from 16x16 down to 8x8 (including SKIP/DIRECT) - </para></listitem> - <listitem><para> - Ratecontrol: constant quantizer, constant bitrate, single or multipass ABR, - optional VBV - </para></listitem> - <listitem><para>Scene cut detection</para></listitem> - <listitem><para>Adaptive B-frame placement</para></listitem> - <listitem><para> - B-frames as references / arbitrary frame order - </para></listitem> - <listitem><para>8x8 and 4x4 adaptive spatial transform</para></listitem> - <listitem><para>Lossless mode</para></listitem> - <listitem><para>Custom quantization matrices</para></listitem> - <listitem><para>Parallel encoding of multiple slices</para></listitem> - <listitem><para>Interlacing</para></listitem> -</itemizedlist> -</sect3> - - -<sect3 id="codec-h264-whatis"> -<title>What is H.264?</title> - -<para> -H.264 is one name for a new digital video codec jointly developed -by the ITU and MPEG. -It can also be correctly referred to by the cumbersome names of -"ISO/IEC 14496-10" or "MPEG-4 Part 10". -More frequently, it is referred to as "MPEG-4 AVC" or just "AVC". -</para> - -<para> -Whatever you call it, H.264 may be worth trying because it can typically match -the quality of MPEG-4 ASP with 5%-30% less bitrate. -Actual results will depend on both the source material and the encoder. -The gains from using H.264 do not come for free: Decoding H.264 -streams seems to have steep CPU and memory requirements. -For instance, on a 1733 MHz Athlon, a DVD-resolution 1500kbps H.264 -video requires around 35% CPU to decode. -By comparison, decoding a DVD-resolution 1500kbps MPEG-4 ASP stream -requires around 10% CPU. -This means that decoding high-definition streams is almost out of -the question for most users. -It also means that even a decent DVD rip may sometimes stutter on -processors slower than 2.0 GHz or so. -</para> - -<para> -At least with <systemitem class="library">x264</systemitem>, -encoding requirements are not much worse than what you are used to -with MPEG-4 ASP. -For instance, on a 1733 MHz Athlon a typical DVD encode would run -at 5-15fps. -</para> - -<para> -This document is not intended to explain the details of H.264, -but if you are interested in a brief overview, you may want to read -<ulink url="http://www.cdt.luth.se/~peppar/kurs/smd151/spie04-h264OverviewPaper.pdf">The H.264/AVC Advanced Video Coding Standard: Overview and Introduction to the Fidelity Range Extensions</ulink>. -</para> -</sect3> - - -<sect3 id="codec-x264-playback"> -<title>How can I play H.264 videos with - <application>MPlayer</application>?</title> - -<para> -<application>MPlayer</application> uses -<systemitem class="library">libavcodec</systemitem>'s H.264 decoder. -<systemitem class="library">libavcodec</systemitem> has had at -least minimally usable H.264 decoding since around July 2004, -however major changes and improvements have been implemented since -that time, both in terms of more functionality supported and in -terms of improved CPU usage. -Just to be certain, it is always a good idea to use a recent Subversion -checkout. -</para> - -<para> -If you want a quick and easy way to know whether there have been -recent changes to <systemitem class="library">libavcodec</systemitem>'s -H.264 decoding, you might keep an eye on -<ulink url="http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/h264.c?view=log">FFmpeg Subversion repository's web interface</ulink>. -</para> </sect3> @@ -342,55 +187,6 @@ satisfied the requirements for <systemitem class="library">x264</systemitem>. <sect1 id="audio-codecs"> <title>Audio codecs</title> -<itemizedlist> -<title>The most important audio codecs above all:</title> -<listitem><para> - MPEG layer 1/2/3 (MP1/2/3) audio (<emphasis role="bold">native</emphasis> - code, with MMX/SSE/3DNow! optimization) -</para></listitem> -<listitem><para> - Windows Media Audio 7 and 8 (AKA WMAv1 and WMAv2) - (<emphasis role="bold">native</emphasis> code, with - <link linkend="ffmpeg"><systemitem class="library">libavcodec</systemitem></link>) -</para></listitem> -<listitem><para> - Windows Media Audio 9 (WMAv3) (using DMO DLL) -</para></listitem> -<listitem><para> - AC-3 Dolby audio (<emphasis role="bold">native</emphasis> code, with - MMX/SSE/3DNow! optimization) -</para></listitem> -<listitem><para> - AC-3 passing through sound card hardware -</para></listitem> -<listitem><para> - AAC -</para></listitem> -<listitem><para> - Ogg Vorbis audio codec (<emphasis role="bold">native</emphasis> library) -</para></listitem> -<listitem><para> - RealAudio: DNET (low bitrate AC-3), Cook, Sipro and ATRAC3 -</para></listitem> -<listitem><para> - QuickTime: Qualcomm and QDesign audio codecs -</para></listitem> -<listitem><para> - VIVO audio (g723, Vivo Siren) -</para></listitem> -<listitem><para> - Voxware audio (using DirectShow DLL) -</para></listitem> -<listitem><para> - alaw and ulaw, various GSM, ADPCM and PCM formats and other simple old - audio codecs -</para></listitem> -<listitem><para> - Adaptive Multi-Rate (AMR) speech codecs -</para></listitem> -</itemizedlist> - -<!-- ********** --> <sect2 id="swac3"> <title>Software AC-3 decoding</title> |