ffmpeg

mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-26 01:02:33 +00:00

FFmpeg git repo

Go to file

Philip Gladstone 4e33b83b18 Added Launch, FaviconURL and Redirect examples Originally committed as revision 631 to svn://svn.ffmpeg.org/ffmpeg/trunk		2002-05-30 02:54:25 +00:00
doc	Added Launch, FaviconURL and Redirect examples	2002-05-30 02:54:25 +00:00
libav	Make sure that the http_proxy environment variable starts with http://	2002-05-29 21:18:06 +00:00
libavcodec	* using unrolled loops seems to help to MMX Celerons	2002-05-29 20:00:10 +00:00
postproc	applied 64bit patch from Ulrich Hecht <uli at suse dot de>	2002-05-23 15:40:08 +00:00
tests	* added dependency on dsputil_mmx_rnd.h for dsputil test	2002-05-29 20:55:16 +00:00
.cvsignore	* cleanup	2002-04-26 07:18:57 +00:00
Changelog	updated	2002-05-25 22:18:04 +00:00
configure	bsd fixes	2002-05-26 15:08:53 +00:00
COPYING	added license	2002-05-25 23:01:48 +00:00
ffmpeg.c	* Go faster stripes: don't check to see if the user presses 'q' if stdin	2002-05-30 02:38:57 +00:00
ffserver.c	* New stuff and bug fixes:	2002-05-30 02:49:07 +00:00
INSTALL	add more info about new configure features	2002-05-25 22:21:14 +00:00
Makefile	license/copyright change - use consistent library names	2002-05-25 22:22:57 +00:00
README	license/copyright change	2002-05-25 22:23:19 +00:00
VERSION	version info for so too	2002-05-09 06:23:37 +00:00

README

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 EXCEPT
  liba52 are licensed under the Lesser GNU General Public
  License. liba52 is distributed under the GNU General Public License.

* 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 mostly the same.

Fabrice Bellard.