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Commit c62e2974 authored by bellard's avatar bellard
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autogeneration of html files 


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doc/Makefile
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all: ffmpeg-doc.html faq.html ffserver-doc.html hooks.html
%.html: %.texi
%.html: %.texi Makefile
texi2html -monolithic -number $<
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<HTML>
<HEAD>
<!-- Created by texi2html 1.56k from faq.texi on 28 December 2002 -->
<TITLE>FFmpeg FAQ</TITLE>
</HEAD>
<BODY>
<H1>FFmpeg FAQ</H1>
<P>
<P><HR><P>
<H1>Table of Contents</H1>
<UL>
<LI><A NAME="TOC1" HREF="faq.html#SEC1">1. General Problems</A>
<UL>
<LI><A NAME="TOC2" HREF="faq.html#SEC2">1.1 ffserver doesn't not work.</A>
<LI><A NAME="TOC3" HREF="faq.html#SEC3">1.2 I cannot read this file although this format seems to be suppored by ffmpeg.</A>
<LI><A NAME="TOC4" HREF="faq.html#SEC4">1.3 I get audio/video synchro problems when grabbing.</A>
<LI><A NAME="TOC5" HREF="faq.html#SEC5">1.4 How do I encode jpegs to another format ?</A>
<LI><A NAME="TOC6" HREF="faq.html#SEC6">1.5 FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it ?</A>
<LI><A NAME="TOC7" HREF="faq.html#SEC7">1.6 How can I read from the standard input or write to the standard output ?</A>
</UL>
<LI><A NAME="TOC8" HREF="faq.html#SEC8">2. Development</A>
<UL>
<LI><A NAME="TOC9" HREF="faq.html#SEC9">2.1 Can you support my C compiler XXX ?</A>
<LI><A NAME="TOC10" HREF="faq.html#SEC10">2.2 I want to use ffmpeg or libavcodec under Windows. Can you support my proprietary C compiler XXX ?</A>
<LI><A NAME="TOC11" HREF="faq.html#SEC11">2.3 Can you add automake, libtool or autoconf support ?</A>
</UL>
</UL>
<P><HR><P>
<P>
FFmpeg FAQ
<H1><A NAME="SEC1" HREF="faq.html#TOC1">1. General Problems</A></H1>
<H2><A NAME="SEC2" HREF="faq.html#TOC2">1.1 ffserver doesn't not work.</A></H2>
<P>
ffmpeg development is now concentrated on the codec and format
handling. New developments broke ffserver, so don't expect it to work
correctly. It is planned to fix it ASAP.
<H2><A NAME="SEC3" HREF="faq.html#TOC3">1.2 I cannot read this file although this format seems to be suppored by ffmpeg.</A></H2>
<P>
Even if ffmpeg can read the file format, it may not support all its
codecs. Please consult the supported codec list in the ffmpeg
documentation.
<H2><A NAME="SEC4" HREF="faq.html#TOC4">1.3 I get audio/video synchro problems when grabbing.</A></H2>
<P>
Currently, the grabbing stuff does not handle synchronisation
correctly. You are free to correct it. It is planned to fix it ASAP.
<H2><A NAME="SEC5" HREF="faq.html#TOC5">1.4 How do I encode jpegs to another format ?</A></H2>
<P>
If the jpegs are named img1.jpg, img2.jpg, img3.jpg,..., use:
<PRE>
ffmpeg -i img%d.jpg /tmp/a.mpg
</PRE>
<P>
<SAMP>`%d'</SAMP> is replaced by the image number.
<P>
<TT>`img%03d.jpg'</TT> generates <TT>`img001.jpg'</TT>, <TT>`img002.jpg'</TT>, etc...
<P>
The same system is used for the other image formats.
<H2><A NAME="SEC6" HREF="faq.html#TOC6">1.5 FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it ?</A></H2>
<P>
No. FFmpeg only supports open source codecs. Windows DLLs are not
portable, bloated and often slow.
<H2><A NAME="SEC7" HREF="faq.html#TOC7">1.6 How can I read from the standard input or write to the standard output ?</A></H2>
<P>
Use <TT>`-'</TT> as filename.
<H1><A NAME="SEC8" HREF="faq.html#TOC8">2. Development</A></H1>
<H2><A NAME="SEC9" HREF="faq.html#TOC9">2.1 Can you support my C compiler XXX ?</A></H2>
<P>
No. Only GCC is supported. GCC is ported on most systems available and I
don't see the need to pollute the source code with <CODE>#ifdef</CODE>s
related to the compiler.
<H2><A NAME="SEC10" HREF="faq.html#TOC10">2.2 I want to use ffmpeg or libavcodec under Windows. Can you support my proprietary C compiler XXX ?</A></H2>
<P>
No. Use <CODE>mingw-gcc</CODE> available at <A HREF="http://www.mingw.org/">http://www.mingw.org/</A> to
compile the code. It generates object files fully compatible with other
windows compilers.
<H2><A NAME="SEC11" HREF="faq.html#TOC11">2.3 Can you add automake, libtool or autoconf support ?</A></H2>
<P>
No. These tools are too blowted and they complicate the build. Moreover,
since only <SAMP>`gcc'</SAMP> is supported they would add little advantages in
terms of portability.
<P><HR><P>
This document was generated on 28 December 2002 using
<A HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A>&nbsp;1.56k.
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<HTML>
<HEAD>
<!-- Created by texi2html 1.56k from hooks.texi on 28 December 2002 -->
<TITLE>Video Hook Documentation</TITLE>
</HEAD>
<BODY>
<H1>Video Hook Documentation</H1>
<P>
<P><HR><P>
<H1>Table of Contents</H1>
<UL>
<LI><A NAME="TOC1" HREF="hooks.html#SEC1">1. Introduction</A>
<UL>
<LI><A NAME="TOC2" HREF="hooks.html#SEC2">1.1 null.c</A>
<LI><A NAME="TOC3" HREF="hooks.html#SEC3">1.2 fish.c</A>
<LI><A NAME="TOC4" HREF="hooks.html#SEC4">1.3 imlib2.c</A>
</UL>
</UL>
<P><HR><P>
<P>
Video Hook Documentation
<H1><A NAME="SEC1" HREF="hooks.html#TOC1">1. Introduction</A></H1>
<P>
The video hook functionality is designed (mostly) for live video. It allows
the video to be modified or examined between the decoder and the encoder.
<P>
Any number of hook modules can be placed inline, and they are run in the
order that they were specified on the ffmpeg command line.
<P>
Three modules are provided and are described below. They are all intended to
be used as a base for your own modules.
<P>
Modules are loaded using the -vhook option to ffmpeg. The value of this parameter
is a space seperated list of arguments. The first is the module name, and the rest
are passed as arguments to the Configure function of the module.
<H2><A NAME="SEC2" HREF="hooks.html#TOC2">1.1 null.c</A></H2>
<P>
This does nothing. Actually it converts the input image to RGB24 and then converts
it back again. This is meant as a sample that you can use to test your setup.
<H2><A NAME="SEC3" HREF="hooks.html#TOC3">1.2 fish.c</A></H2>
<P>
This implements a 'fish detector'. Essentially it converts the image into HSV
space and tests whether more than a certain percentage of the pixels fall into
a specific HSV cuboid. If so, then the image is saved into a file for processing
by other bits of code.
<P>
Why use HSV? It turns out that HSV cuboids represent a more compact range of
colors than would an RGB cuboid.
<H2><A NAME="SEC4" HREF="hooks.html#TOC4">1.3 imlib2.c</A></H2>
<P>
This allows a caption to be placed onto each frame. It supports inserting the
time and date. By using the imlib functions, it would be easy to add your own
graphical logo, add a frame/border, etc.
<P><HR><P>
This document was generated on 28 December 2002 using
<A HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A>&nbsp;1.56k.
</BODY>
</HTML>
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