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FFmpeg git repo
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Alfred E. Heggestad d550a28560 dashenc: check pts to prevent division by zero error 
this usecase will cause a division by zero trap:

1. dashenc has received one frame
2. os->max_pts and os->start_pts have same value
3. delta between max_pts and start_pts is 0
4. av_rescale_q(0, x, y) returns 0
5. this value is used as denominator in division
6. Bang! -> segfault

this fix checks that max_pts > start_pts.
the fix has been tested and works.

Signed-off-by: Alfred E. Heggestad <alfred.heggestad@gmail.com>
Reviewed-by: Jeyapal, Karthick <kjeyapal@akamai.com>
Signed-off-by: James Almer <jamrial@gmail.com>
 		2020-01-31 10:15:37 -03:00
compat avutil/thread: Add pthread_cond_timedwait function 2020-01-21 22:34:15 +01:00
doc avfilter/vf_xfade: add smooth transitions 2020-01-31 13:14:13 +01:00
ffbuild build: add support for building CUDA files with clang 2019-08-04 19:08:08 +02:00
fftools cmdutils: fix crash if no name for "ffmpeg -h protocol" 2020-01-30 12:50:22 -03:00
libavcodec avcodec/x86/diracdsp: Fix high bits on Windows x86_64 2020-01-31 00:04:22 +01:00
libavdevice avdevice/xcbgrab: check if frame size fits in INT_MAX 2020-01-24 01:17:14 +01:00
libavfilter avfilter/vf_xfade: add smooth transitions 2020-01-31 13:14:13 +01:00
libavformat dashenc: check pts to prevent division by zero error 2020-01-31 10:15:37 -03:00
libavresample
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libavutil avutil/common: warn about possible move of the data pointer after the last 0 byte in GET_UTF8 2020-01-31 00:15:13 +01:00
libpostproc Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale swscale/input: Fix several invalid shifts related to rgb2yuv constants 2020-01-22 21:50:49 +01:00
presets
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tests tests/fate/lavf-video.mak: fix fate-lavf-gif dependencies 2020-01-30 20:30:36 +01:00
tools tools/target_dec_fuzzer: limit per frame samples for APE 2020-01-30 19:59:10 +01:00
.gitattributes
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.gitignore
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.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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Changelog avfilter: add xfade filter 2020-01-30 16:35:33 +01:00
INSTALL.md
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LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add myself as libxavs2 maintainer 2019-12-07 19:34:57 +01:00
Makefile tools: add a fuzzer tool for bitstream filters 2019-12-05 20:49:15 -03:00
README.md
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RELEASE RELEASE: Update value for post 4.2 branch 2019-07-21 18:37:32 +02:00
configure configure: Check for GetStdHandle in addition to SetConsoleTextAttribute 2020-01-23 18:30:09 +02:00

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.
  • 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 and will be ignored.