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Ganesh Ajjanagadde cc37b31ad3 lavfi/vf_colorchannelmixer: replace round by lrint 
lrint is faster here on -ftree-vectorize with GCC. This is likely simply
an artifact of GCC's rather terrible auto-vectorizer, since as per the
instruction set manuals cvtsd2si and cvttsd2si (or their vector equivalents)
have identical cycle timings.

Anyway, regardless of above, lrint is superior to round accuracy wise.

Safety guaranteed as long int has at least 32 bits.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
2015-12-21 08:15:31 -08:00
compat os2threads: Add pthread_once() 2015-11-12 22:31:46 +01:00
doc avfilter/avf_showfreqs: make it possible to split channels 2015-12-20 19:52:51 +01:00
libavcodec lavc: add text encoder 2015-12-21 11:14:02 +01:00
libavdevice
libavfilter lavfi/vf_colorchannelmixer: replace round by lrint 2015-12-21 08:15:31 -08:00
libavformat lavf/img2enc: add atomic_writing option 2015-12-21 11:19:51 +01:00
libavresample
libavutil lavu/libm: add copysign hack 2015-12-19 14:05:49 -08:00
libpostproc
libswresample swresample: use AV_OPT_TYPE_BOOL for linear_interp and cheby options 2015-12-04 15:43:33 +01:00
libswscale swscale/arm/yuv2rgb: add ff_yuv420p_to_{argb,rgba,abgr,bgra}_neon_{16,32} 2015-12-19 22:09:28 +01:00
presets
tests lavc: add text encoder 2015-12-21 11:14:02 +01:00
tools patcheck: Fix false detection of 'mergeable calls' when line is removed 2015-11-23 00:34:14 +01:00
.gitattributes
.gitignore
.travis.yml Merge commit 'eda183287489b2c705843aa373a19c4e46fb2fec' 2015-11-22 17:12:24 +00:00
arch.mak mips: rename mipsdspr1 to mipsdsp 2015-12-04 02:35:42 +01:00
Changelog movenc: support cenc (common encryption) 2015-12-15 14:16:28 +01:00
cmdutils_common_opts.h
cmdutils_opencl.c
cmdutils.c cosmetics: Fix weird indentations 2015-12-07 10:43:43 -08:00
cmdutils.h
common.mak Merge commit '9f57f134c19773d54269b6cb9ee455ff87c2e9e1' 2015-12-05 12:21:33 +01:00
configure lavu/libm: add copysign hack 2015-12-19 14:05:49 -08:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c ffmpeg_dxva2: support vp9 hwaccel 2015-12-07 09:47:51 +01:00
ffmpeg_filter.c ffmpeg_filter: remove redundant null ptr check 2015-11-11 01:51:52 +01:00
ffmpeg_opt.c ffmpeg: Allow specifying the program number for created programs 2015-12-16 14:03:57 +01:00
ffmpeg_qsv.c
ffmpeg_vdpau.c
ffmpeg_videotoolbox.c
ffmpeg.c Merge commit 'e63e3797a1ed9346f529848e6ba3d27fd2d2cc8d' 2015-12-17 13:20:37 +01:00
ffmpeg.h ffmpeg: Add basic support to mux multiple programs 2015-12-11 22:27:25 +01:00
ffplay.c ffplay: remove existing AVPicture usage 2015-12-19 14:09:26 +01:00
ffprobe.c ffprobe: use print_val to print the frame pkt_size value 2015-12-16 18:59:23 +01:00
ffserver_config.c
ffserver_config.h
ffserver.c ffserver: refactor build_feed_streams() 2015-12-19 01:52:20 -08:00
INSTALL.md
library.mak
LICENSE.md
MAINTAINERS
Makefile mips: rename mipsdspr1 to mipsdsp 2015-12-04 02:35:42 +01:00
README.md
RELEASE
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.