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1FFmpeg - (c) 2000,2001 Gerard Lantau.
2
31) Introduction
4---------------
5
6ffmpeg is a hyper fast realtime audio/video encoder, a streaming
7server and a generic audio and video file converter.
8
9It can grab from a standard Video4Linux video source and convert it
10into several file formats based on DCT/motion compensation
11encoding. Sound is compressed in MPEG audio layer 2 or using an AC3
12compatible stream.
13
14What makes ffmpeg interesting ?
15
16- Innovative streaming technology : multiformat, real time encoding,
17 simple configuration.
18
19- Simple and efficient video encoder: outputs MPEG1, H263, Real
20 Video(tm), MPEG4, DIVX and MJPEG compatible bitstreams using the
21 same encoder core.
22
23- Real time encoding (25 fps in 352x288 on a K6 500) using the
24 video4linux API.
25
26- Generates I and P frames, which means it is far better than a MJPEG
27 encoder.
28
29- Hyper fast MPEG audio layer 2 compression (50 times faster than
30 realtime on a K6 500).
31
32- Hyper fast AC3 compatible encoder.
33
34- simple and very small portable C source code, easy to understand and
35 to modify. It be may the smallest decent MPEG encoder :-)
36
37- optional non real time higher quality encoding (different motion
38 estimators available).
39
40- Audio and Video decoders are in development.
41
42ffmpeg is made of two programs:
43
44* ffmpeg: soft VCR which encodes in real time to several formats. It
45 can also encode from any supported input file format to any input
46 supported format.
47
48* ffserver: high performance live broadcast streaming server based on
49 the ffmpeg core encoders.
50
512) Documentation
52----------------
53
54* Read doc/ffmpeg.txt and doc/ffserver.txt to learn the basic features.
55
56* Read doc/TODO to know what are the know bugs and missing features.
57
58* Read doc/README.dev if you want to contribute or use the codec or
59 format libraries.
60
613) Licensing:
62------------
63
64* See the file COPYING. ffmpeg and the associated library are licensed
65 under the GNU General Public License. I may change the license of
66 libavcodec and libav to LGPL if many people ask it (and if they
67 submit good patches!).
68
69* This code should be patent free since it is very simple. I took care
70 to use the same video encoder/decoder core for all formats to show
71 that they really ARE THE SAME except for the encoding huffman codes.
72
73Gerard Lantau (glantau@yahoo.fr).