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a141948a8b
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Muhammad Faiz a141948a8b avfilter/avf_showcqt: optimize gamma calculation 
benchmark (on intel core2 duo, gcc 4.9.1)
input samples duration 00:03:39.59
command: time -p ffmpeg -f f32le -ac 2 -ar 44100 -i input.pcm \
         -filter_complex showcqt=fullhd=0:gamma=$gamma \
         -f rawvideo -y /dev/null
gamma  previous  modified
  1    48.49 s   45.38 s
  2    49.33 s   48.11 s
  3    80.86 s   59.80 s
  4    80.84 s   51.25 s
  5    80.75 s   61.06 s
  6    80.93 s   61.80 s
  7    80.03 s   61.56 s

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-05-03 11:53:04 +02:00
compat
doc ffprobe: support printing AVStream and AVPacket side data 2015-05-03 00:53:19 +02:00
libavcodec avcodec/nvenc: Make pix_fmts_nvenc const 2015-05-03 04:14:01 +02:00
libavdevice Merge commit 'e8c4db0d4d07738fed716b1d2f20c85aac944641' 2015-04-30 22:15:22 +02:00
libavfilter avfilter/avf_showcqt: optimize gamma calculation 2015-05-03 11:53:04 +02:00
libavformat avformat/matroskadec: Mark static tables as const 2015-05-02 13:27:45 +02:00
libavresample Merge commit '0ac8ff618c5e6d878c547a8877e714ed728950ce' 2015-04-29 05:46:35 +02:00
libavutil avutil/cast5: Make iv array static 2015-05-02 14:37:48 +02:00
libpostproc postproc: Made QP, nonBQP, and pQPb arrays 2015-04-22 23:59:03 +02:00
libswresample swresample/swresample-test: Randomly wipe out channel counts 2015-04-12 22:21:53 +02:00
libswscale swscale/ppc/swscale_altivec.c: POWER LE support in yuv2planeX_8() delete macro GET_VF() it was wrong 2015-04-27 12:59:05 +02:00
presets
tests vp9: add fate test for 422. 2015-05-01 08:45:55 +02:00
tools
.gitattributes
.gitignore
arch.mak makefile: add Loongson-3 support 2015-04-27 14:10:28 +02:00
Changelog Merge commit '16302246b1fcb7ad4e6f7bd31c49956a455336d2' 2015-05-02 22:39:00 +02:00
cmdutils_common_opts.h
cmdutils_opencl.c OpenCL: Avoid potential buffer overflow in cmdutils_opencl.c 2015-04-28 12:18:23 +02:00
cmdutils.c Merge commit 'c253340ae6f74ffd8798bbd476e46d1b33a2d56e' 2015-04-20 02:48:19 +02:00
cmdutils.h
common.mak
configure configure: prepend avfilter_deps for *_rect filters 2015-05-03 01:42:51 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c Merge commit '16302246b1fcb7ad4e6f7bd31c49956a455336d2' 2015-05-02 22:39:00 +02:00
ffmpeg_opt.c ffmpeg_opt: remove rotate metadata in case of autorotate 2015-05-02 23:04:00 +02:00
ffmpeg_vda.c vda: Cast to not discard constant qualifier and silence compiler warning 2015-04-09 01:23:33 +02:00
ffmpeg_vdpau.c
ffmpeg.c Merge commit '16302246b1fcb7ad4e6f7bd31c49956a455336d2' 2015-05-02 22:39:00 +02:00
ffmpeg.h Merge commit '16302246b1fcb7ad4e6f7bd31c49956a455336d2' 2015-05-02 22:39:00 +02:00
ffplay.c Merge commit 'e2d50fc2f5f3600e13055acf1a10fec35e941f37' 2015-05-02 22:31:20 +02:00
ffprobe.c ffprobe: support printing AVStream and AVPacket side data 2015-05-03 00:53:19 +02:00
ffserver_config.c
ffserver_config.h
ffserver.c
INSTALL.md
library.mak
LICENSE.md LICENSE.md: add *_rect filters 2015-05-03 01:43:30 +02:00
MAINTAINERS
Makefile makefile: add Loongson-3 support 2015-04-27 14:10:28 +02:00
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.