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Linshizhi
ffmpeg.wasm-core
Commits
4745b5bf
Commit
4745b5bf
authored
Nov 19, 2002
by
Fabrice Bellard
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update
Originally committed as revision 1236 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
fce16586
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README
README
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ffmpeg-doc.html
doc/ffmpeg-doc.html
+6
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ffmpeg-doc.texi
doc/ffmpeg-doc.texi
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README
View file @
4745b5bf
1) Introduction
FFmpeg README
-------------
--
-------------
ffmpeg is a hyper fast realtime audio/video encoder, a streaming
1) Documentation
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 the documentation in the doc/ directory.
* 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
2) Licensing
format libraries.
3) Licensing:
------------
------------
*
See the file COPYING. ffmpeg and the associated library
EXCEPT
*
Read the file COPYING. ffmpeg and the associated libraries
EXCEPT
liba52 are licensed under the Lesser GNU General Public
liba52 are licensed under the Lesser GNU General Public
License. liba52 is distributed under the GNU General Public License.
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.
Fabrice Bellard.
\ No newline at end of file
doc/ffmpeg-doc.html
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4745b5bf
...
@@ -645,6 +645,9 @@ library.
...
@@ -645,6 +645,9 @@ library.
</TR>
</TR>
<TR><TD>
DV
</TD><TD>
</TD><TD>
X
</TD>
<TR><TD>
DV
</TD><TD>
</TD><TD>
X
</TD>
</TR>
<TR><TD>
Huff YUV
</TD><TD>
X
</TD><TD>
X
</TD>
</TR></TABLE>
</TR></TABLE>
<P>
<P>
...
@@ -680,6 +683,9 @@ solutions.
...
@@ -680,6 +683,9 @@ solutions.
<TR><TD>
Vorbis
</TD><TD>
X
</TD><TD></TD>
<TR><TD>
Vorbis
</TD><TD>
X
</TD><TD></TD>
</TD><TD>
encoding is supported thru the external library libvorbis.
</TD><TD>
encoding is supported thru the external library libvorbis.
</TR>
<TR><TD>
WMA V1/V2
</TD><TD>
</TD><TD>
X
</TD>
</TR></TABLE>
</TR></TABLE>
<P>
<P>
...
...
doc/ffmpeg-doc.texi
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4745b5bf
...
@@ -362,7 +362,7 @@ library.
...
@@ -362,7 +362,7 @@ library.
@multitable @columnfractions .4 .1 .1 .7
@multitable @columnfractions .4 .1 .1 .7
@item Supported Codec @tab Encoding @tab Decoding @tab Comments
@item Supported Codec @tab Encoding @tab Decoding @tab Comments
@item MPEG1 video @tab X @tab X
@item MPEG1 video @tab X @tab X
@item MPEG2 video @tab @tab X
@item MPEG2 video @tab @tab X
@item MPEG4 @tab X @tab X @tab Also known as DIVX4/5
@item MPEG4 @tab X @tab X @tab Also known as DIVX4/5
@item MSMPEG4 V1 @tab X @tab X
@item MSMPEG4 V1 @tab X @tab X
...
@@ -372,6 +372,7 @@ library.
...
@@ -372,6 +372,7 @@ library.
@item H263(+) @tab X @tab X @tab Also known as Real Video 1.0
@item H263(+) @tab X @tab X @tab Also known as Real Video 1.0
@item MJPEG @tab X @tab X
@item MJPEG @tab X @tab X
@item DV @tab @tab X
@item DV @tab @tab X
@item Huff YUV @tab X @tab X
@end multitable
@end multitable
@code
{
X
}
means that the encoding (resp. decoding) is supported.
@code
{
X
}
means that the encoding (resp. decoding) is supported.
...
@@ -391,6 +392,8 @@ solutions.
...
@@ -391,6 +392,8 @@ solutions.
@tab liba52 is used internally for decoding.
@tab liba52 is used internally for decoding.
@item Vorbis @tab X @tab
@item Vorbis @tab X @tab
@tab encoding is supported thru the external library libvorbis.
@tab encoding is supported thru the external library libvorbis.
@item WMA V1/V2 @tab @tab X
@end multitable
@end multitable
@code
{
X
}
means that the encoding (resp. decoding) is supported.
@code
{
X
}
means that the encoding (resp. decoding) is supported.
...
...
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