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Andreas Rheinhardt e66185eaef avformat/matroskaenc: Check for reformatting errors 
This is needed especially for AV1: If a reformatting error happens (e.g.
if the length field of an OBU contained in the current packet indicates
that said OBU extends beyond the current packet), the data pointer is
still NULL, yet the size is unchanged, so that writing the data leads
to a segmentation fault.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 58428bef4b)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-07-02 23:44:51 +02:00
compat compat/cuda/ptx2c: strip CR from each line 2017-08-30 11:20:34 +02:00
doc Update for 3.4.7 2019-11-15 17:19:45 +01:00
ffbuild build: prevent SDL2 from polluting global cflags and extralibs 2017-10-09 21:41:11 -03:00
fftools fftools/ffmpeg: Fix integer overflow in duration computation in seek_to_start() 2020-07-02 19:55:09 +02:00
libavcodec avcodec/ra144enc: Fix invalid left shift of negative number 2020-07-02 23:44:51 +02:00
libavdevice avdevice/decklink_dec: Fix ;; 2018-06-18 01:16:03 +02:00
libavfilter avfilter/vf_aspect: Fix integer overflow in compute_dar() 2020-07-02 19:55:09 +02:00
libavformat avformat/matroskaenc: Check for reformatting errors 2020-07-02 23:44:51 +02:00
libavresample Bump minor versions for branching 3.4 2017-10-11 01:23:47 +02:00
libavutil avutil/common: Fix integer overflow in av_ceil_log2_c() 2020-07-02 19:55:10 +02:00
libpostproc postproc/postprocess_template: remove FF_REG_sp from clobber list 2019-03-24 10:38:51 +01:00
libswresample swresample/swresample: Fix input channel count in resample_first computation 2018-10-28 02:22:42 +02:00
libswscale swscale/yuv2rgb: Fix vertical dither offset with slices 2020-07-02 19:55:09 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests avcodec/vp56rac: delay signaling an error on truncated input 2019-11-15 12:25:46 +01:00
tools tools/ismindex: remove unused header 2017-10-01 18:19:14 -03:00
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.gitignore build: add support for building .cu files via nvcc 2017-05-15 11:46:50 +02:00
.travis.yml build: Prefer NASM assembler over YASM 2017-06-21 17:00:30 -03:00
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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 and will be ignored.