ffmpeg

FFmpeg git repo

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Arpi a749913f4c verbose can be negative Originally committed as revision 8028 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc		2002-11-01 17:46:45 +00:00
doc	added Michael's page	2002-10-27 22:07:56 +00:00
libav	* always set extradata_size	2002-10-31 12:23:35 +00:00
libavcodec	hopefully fixing sprite_warping_points==0	2002-11-01 13:25:22 +00:00
postproc	verbose can be negative	2002-11-01 17:46:45 +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
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berrno.h	beos/mov/adpcm patch by François Revol <revol at free dot fr>	2002-07-20 20:05:50 +00:00
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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	-vcodec copy fix patch by (mru at users dot sourceforge dot net (Måns Rullgård))	2002-10-30 09:36:33 +00:00
ffserver.c	Added VideoBitRateRange and VideoBitRAteTolerance settings	2002-10-30 02:15:07 +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.