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Fabrice Bellard 23642d8e54 add more info about new configure features 
Originally committed as revision 583 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-05-25 22:21:14 +00:00
doc update 2002-05-20 16:22:05 +00:00
libav Change order of extensions and read_probe checking. This gives the read_probe 2002-05-24 02:09:40 +00:00
libavcodec Add an av_abort macro that aborts, but also prints out the location of the abort. 2002-05-24 01:16:08 +00:00
postproc applied 64bit patch from Ulrich Hecht <uli at suse dot de> 2002-05-23 15:40:08 +00:00
tests * cosmetic 2002-05-23 15:58:07 +00:00
.cvsignore * cleanup 2002-04-26 07:18:57 +00:00
bswap.h Fixed one lack 2001-08-02 08:29:52 +00:00
Changelog updated 2002-05-25 22:18:04 +00:00
configure BSD/OS support by Steven M Schultz 2002-05-21 15:43:00 +00:00
ffmpeg.c began to simplify code - use modified API for stream reading 2002-05-20 16:32:49 +00:00
ffserver.c * Added yet more output to the status page to try and track down a problem 2002-05-24 02:06:15 +00:00
INSTALL add more info about new configure features 2002-05-25 22:21:14 +00:00
Makefile added libavtest target 2002-05-20 16:34:07 +00:00
mangle.h Cygwin's mangling by Felix Buenemann <atmosfear@users.sourceforge.net> 2002-01-20 14:30:34 +00:00
README merge 2001-07-22 14:37:44 +00:00
VERSION version info for so too 2002-05-09 06:23:37 +00:00

README 

FFmpeg - (c) 2000,2001 Gerard Lantau.

1) Introduction
---------------

ffmpeg is a hyper fast realtime audio/video encoder, a streaming
server and a generic audio and video file converter. 

It can grab from a standard Video4Linux video source and convert it
into several file formats based on DCT/motion compensation
encoding. Sound is compressed in MPEG audio layer 2 or using an AC3
compatible stream.

What makes ffmpeg interesting ?

- Innovative streaming technology : multiformat, real time encoding,
  simple configuration.

- Simple and efficient video encoder: outputs MPEG1, H263, Real
  Video(tm), MPEG4, DIVX and MJPEG compatible bitstreams using the
  same encoder core.

- Real time encoding (25 fps in 352x288 on a K6 500) using the
  video4linux API.

- Generates I and P frames, which means it is far better than a MJPEG
  encoder.

- Hyper fast MPEG audio layer 2 compression (50 times faster than
  realtime on a K6 500).

- Hyper fast AC3 compatible encoder.

- simple and very small portable C source code, easy to understand and
  to modify. It be may the smallest decent MPEG encoder :-)

- optional non real time higher quality encoding (different motion
  estimators available).

- Audio and Video decoders are in development.

ffmpeg is made of two programs:

* ffmpeg: soft VCR which encodes in real time to several formats. It
  can also encode from any supported input file format to any input
  supported format.

* ffserver: high performance live broadcast streaming server based on
  the ffmpeg core encoders.

2) Documentation
----------------

* Read doc/ffmpeg.txt and doc/ffserver.txt to learn the basic features.

* Read doc/TODO to know what are the know bugs and missing features.

* Read doc/README.dev if you want to contribute or use the codec or
  format libraries.

3) Licensing:
------------

* See the file COPYING. ffmpeg and the associated library are licensed
  under the GNU General Public License. I may change the license of
  libavcodec and libav to LGPL if many people ask it (and if they
  submit good patches!).

* This code should be patent free since it is very simple. I took care
  to use the same video encoder/decoder core for all formats to show
  that they really ARE THE SAME except for the encoding huffman codes.

Gerard Lantau (glantau@yahoo.fr).