ffmpeg

FFmpeg git repo

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Michael Niedermayer 7da71a5c68 xvid qpel bug autodetect Originally committed as revision 1064 to svn://svn.ffmpeg.org/ffmpeg/trunk		2002-10-22 19:48:52 +00:00
doc	removed obsolete file	2002-10-15 09:08:42 +00:00
libav	put/get portable for IEEE double - renamed put_native_string/get_native_string	2002-10-22 09:23:14 +00:00
libavcodec	xvid qpel bug autodetect	2002-10-22 19:48:52 +00:00
postproc	avoid multiple init	2002-10-17 00:04:33 +00:00
tests	set low_delay on encoding if no b frames	2002-10-06 17:46:22 +00:00
.cvsignore	…
COPYING	…
Changelog	…
INSTALL	…
Makefile	oggvorbis support patch by (Mark Hills <mark at pogo dot org dot uk>)	2002-09-01 18:07:56 +00:00
README	…
VERSION	…
berrno.h	beos/mov/adpcm patch by François Revol <revol at free dot fr>	2002-07-20 20:05:50 +00:00
configure	cross compiling support	2002-10-14 17:50:42 +00:00
cygwin_inttypes.h	cygwin patch by (Felix Buenemann <atmosfear at users dot sourceforge dot net>)	2002-08-30 19:34:55 +00:00
ffmpeg.c	use new PTS api - corrected AV sync for transcoding - factorized print_report() code	2002-10-21 17:42:47 +00:00
ffserver.c	changed write_packet API - should work as before	2002-10-21 17:44:43 +00:00
ffserver.h	added include for ffserver dynamically loaded modules	2002-07-25 16:15:28 +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.