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Ganesh Ajjanagadde 1d4af04adf avutil/attributes: add av_warn_unused_result GCC 3.4 introduced an attribute warn_unused_result to warn when a programmer discards the return value. Applying this judiciously across the codebase can help in fixing a lot of problems. At a high level, functions which return error codes should always be checked. More concretely, consider the functions ff_add_format and the like in avfilter/formats.h. A quick examination shows that a large portion of libavfilter fails to handle the associated errors, usually AVERROR(ENOMEM). The above example was where I observed the utility of this, but it should be useful in many places across the code base. Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>		2015-10-05 19:30:20 +02:00
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doc	avfilter: add displace video filter	2015-10-04 21:44:57 +02:00
libavcodec	dnxhd: add better support for CIDs 1270 to 1274	2015-10-05 13:08:20 +02:00
libavdevice	…
libavfilter	avfilter: add displace video filter	2015-10-04 21:44:57 +02:00
libavformat	isom: add support for DNxHR codec family	2015-10-05 12:44:05 +02:00
libavresample	…
libavutil	avutil/attributes: add av_warn_unused_result	2015-10-05 19:30:20 +02:00
libpostproc	…
libswresample	x86/audio_convert: fix clobbering of xmm registers	2015-10-01 22:40:50 -03:00
libswscale	all: add _DEFAULT_SOURCE locally wherever needed	2015-10-04 12:15:16 -04:00
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tests	checkasm: Fix compilation with --disable-avcodec	2015-10-04 15:35:16 +02:00
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Changelog	avfilter: add displace video filter	2015-10-04 21:44:57 +02:00
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LICENSE.md	…
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arch.mak	…
cmdutils.c	cmdutils: silence unused warnings under --disable-swscale, --disable-swresample	2015-10-03 19:26:09 +02:00
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cmdutils_common_opts.h	…
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configure	lavf: add chromaprint muxer	2015-10-04 01:37:31 +02:00
ffmpeg.c	…
ffmpeg.h	…
ffmpeg_dxva2.c	…
ffmpeg_filter.c	…
ffmpeg_opt.c	…
ffmpeg_vdpau.c	…
ffmpeg_videotoolbox.c	…
ffplay.c	ffplay: more robust mutex creation	2015-10-05 00:16:42 +02:00
ffprobe.c	…
ffserver.c	ffserver: avoid leaking pathname at exit	2015-10-04 22:31:22 -07:00
ffserver_config.c	ffserver: fix line wrapping on function decls	2015-10-04 15:58:35 -07:00
ffserver_config.h	…
library.mak	…
version.sh	…

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

libavcodec provides implementation of a wider range of codecs.
libavformat implements streaming protocols, container formats and basic I/O access.
libavutil includes hashers, decompressors and miscellaneous utility functions.
libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
libavdevice provides an abstraction to access capture and playback devices.
libswresample implements audio mixing and resampling routines.
libswscale implements color conversion and scaling routines.

Tools

ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
ffplay is a minimalistic multimedia player.
ffprobe is a simple analysis tool to inspect multimedia content.
ffserver is a multimedia streaming server for live broadcasts.
Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process. Few developers follow pull requests so they will likely be ignored.