mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
3.8 KiB
139 lines
3.8 KiB
<HTML> |
|
<HEAD> |
|
<!-- Created by texi2html 1.56k from faq.texi on 4 November 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> |
|
</UL> |
|
<LI><A NAME="TOC7" HREF="faq.html#SEC7">2. Development</A> |
|
<UL> |
|
<LI><A NAME="TOC8" HREF="faq.html#SEC8">2.1 Can you support my C compiler XXX ?</A> |
|
<LI><A NAME="TOC9" HREF="faq.html#SEC9">2.2 I want to use ffmpeg or libavcodec under Windows. Can you support my proprietary C compiler XXX ?</A> |
|
<LI><A NAME="TOC10" HREF="faq.html#SEC10">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. |
|
|
|
|
|
|
|
|
|
<H1><A NAME="SEC7" HREF="faq.html#TOC7">2. Development</A></H1> |
|
|
|
|
|
|
|
<H2><A NAME="SEC8" HREF="faq.html#TOC8">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="SEC9" HREF="faq.html#TOC9">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="SEC10" HREF="faq.html#TOC10">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 4 November 2002 using |
|
<A HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A> 1.56k. |
|
</BODY> |
|
</HTML>
|
|
|