ffmpeg

FFmpeg git repo

Go to file

Zdenek Kabelac 41568e4a09 * put there more reasnable 15fps speed (though it's probably meaningless) Originally committed as revision 1174 to svn://svn.ffmpeg.org/ffmpeg/trunk		2002-11-06 20:39:17 +00:00
doc	added faq.html	2002-11-04 18:50:27 +00:00
libav	* put there more reasnable 15fps speed (though it's probably meaningless)	2002-11-06 20:39:17 +00:00
libavcodec	cleanup	2002-11-06 11:59:17 +00:00
postproc	dont use fastmemcpy for PIC	2002-11-04 22:45:34 +00:00
tests	fixing another assert q>0.0 issue caused by variance < 0, this fix allso changes the inter/intra decission very slightly -> all regression checksums need to be updated	2002-10-31 00:48:05 +00:00
.cvsignore	* cleanup	2002-04-26 07:18:57 +00:00
COPYING	added license	2002-05-25 23:01:48 +00:00
Changelog	update	2002-10-29 14:32:50 +00:00
INSTALL	add more info about new configure features	2002-05-25 22:21:14 +00:00
Makefile	BeOS Audio ouput patch by (François Revol <revol at free dot fr>)	2002-11-05 00:38:06 +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
berrno.h	beos/mov/adpcm patch by François Revol <revol at free dot fr>	2002-07-20 20:05:50 +00:00
configure	BeOS Audio ouput patch by (François Revol <revol at free dot fr>)	2002-11-05 00:38:06 +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 larger buffer - the size should be calculcated from the bitstream	2002-11-05 12:38:50 +00:00
ffserver.c	MIN/MAX sys/param.h patch by (François Revol <revol at free dot fr>)	2002-11-05 00:56:08 +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.