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FFmpeg git repo
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Ganesh Ajjanagadde 6f520ce1a6 avutil/common: add av_rint64_clip 
The rationale for this function is reflected in the documentation for
it, and is copied here:

Clip a double value into the long long amin-amax range.
This function is needed because conversion of floating point to integers when
it does not fit in the integer's representation does not necessarily saturate
correctly (usually converted to a cvttsd2si on x86) which saturates numbers
> INT64_MAX to INT64_MIN. The standard marks such conversions as undefined
behavior, allowing this sort of mathematically bogus conversions. This provides
a safe alternative that is slower obviously but assures safety and better
mathematical behavior.
API:
@param a value to clip
@param amin minimum value of the clip range
@param amax maximum value of the clip range
@return clipped value

Note that a priori if one can guarantee from the calling side that the
double is in range, it is safe to simply do an explicit/implicit cast,
and that will be far faster. However, otherwise this function should be
used.

avutil minor version is bumped.

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
2015-11-13 21:48:16 -05:00
compat os2threads: Add pthread_once() 2015-11-12 22:31:46 +01:00
doc avformat/mxfenc: Only store user comment related tags when needed 2015-11-10 23:27:51 +01:00
libavcodec avcodec/ivi: Check image dimensions 2015-11-14 02:37:12 +01:00
libavdevice avdevice/dshow_enummediatypes: check return of av_malloc 2015-11-06 09:36:57 -05:00
libavfilter Merge commit '1339009c4924a20e872aa62897097bf5d071157c' 2015-11-11 15:01:15 +01:00
libavformat avformat/async: Fix bug where async could not recover after seek to eof 2015-11-13 12:43:22 +01:00
libavresample Merge commit 'e2854e731f843906d9a9a5b882bed872341999fd' 2015-11-10 18:07:41 +01:00
libavutil avutil/common: add av_rint64_clip 2015-11-13 21:48:16 -05:00
libpostproc
libswresample swresample/resample: increase precision for compensation 2015-11-11 18:17:18 +01:00
libswscale swscale: rename sws_rgb2rgb_init to ff_sws_rgb2rgb_init 2015-10-29 23:49:46 +01:00
presets
tests swresample/resample: increase precision for compensation 2015-11-11 18:17:18 +01:00
tools Replace remaining occurances of av_free_packet with av_packet_unref 2015-10-27 14:35:30 +01:00
.gitattributes
.gitignore
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Changelog avfilter: add anoisesrc 2015-11-08 18:50:26 +01:00
cmdutils_common_opts.h
cmdutils_opencl.c all: use FFDIFFSIGN to resolve possible undefined behavior in comparators 2015-11-03 16:28:30 -05:00
cmdutils.c all: use FFDIFFSIGN to resolve possible undefined behavior in comparators 2015-11-03 16:28:30 -05:00
cmdutils.h
common.mak
configure mmaldec: add vc1 decoding support 2015-11-07 19:24:49 +01:00
COPYING.GPLv2
COPYING.GPLv3
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COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c ffmpeg_filter: remove redundant null ptr check 2015-11-11 01:51:52 +01:00
ffmpeg_opt.c
ffmpeg_qsv.c
ffmpeg_vdpau.c
ffmpeg_videotoolbox.c
ffmpeg.c ffmpeg: Fix integer overflow with cur_dts being AV_NOPTS_VALUE 2015-11-11 17:46:19 +01:00
ffmpeg.h ffmpeg: set muxer packet duration based on framerate only for CFR 2015-11-11 15:04:21 +01:00
ffplay.c Replace remaining occurances of av_free_packet with av_packet_unref 2015-10-27 14:35:30 +01:00
ffprobe.c ffprobe: add support for printing packet strings metadata as packet tags 2015-10-30 20:47:43 +01:00
ffserver_config.c
ffserver_config.h
ffserver.c ffserver: Replace one malloc(AVStream) by avformat_new_stream() 2015-11-11 21:26:50 +01:00
INSTALL.md
library.mak
LICENSE.md
MAINTAINERS lavfi: remove astreamsync. 2015-11-07 16:43:36 +01:00
Makefile
README.md
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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.