ffmpeg

FFmpeg git repo

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Philip Gladstone cb09b2ed92 * Go faster stripes: don't check to see if the user presses 'q' if stdin returns EOF -- e.g. it is connected to /dev/null * Make the 1MB video buffer only allocated once rather than on each frame. The allocation and deallocation causes significant performance loss as the kernel remaps the address space each time. Originally committed as revision 629 to svn://svn.ffmpeg.org/ffmpeg/trunk		2002-05-30 02:38:57 +00:00
doc	update	2002-05-25 22:26:48 +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
COPYING	added license	2002-05-25 23:01:48 +00:00
Changelog	updated	2002-05-25 22:18:04 +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
configure	bsd fixes	2002-05-26 15:08:53 +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	* Add first cut of code to handle Windows Media Player rate switching	2002-05-26 03:36:34 +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.