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Andreas Rheinhardt 42df71d0c5 avformat/flvenc: Avoid unnecessary seek 
When shifting the already written data in order to write the keyframe
index, the flv muxer would first store the pre-shift size, then
calculate how big the index will be eventually, then perform some seeks
to update some size fields, then seek back to the end of the file to get
the new position, followed by a seek to the position where writing will
really start. Seeking back to the (already known) end position (that is
actually used to perform this seek) to get the end position is of course
unnecessary. It has been removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-01-17 20:17:55 +01:00
compat compat/avisynth: Fix unicode compilation. 2020-01-01 16:38:28 +01:00
doc avfilter/vf_v360: add cylindrical output projection 2020-01-17 10:46:31 +01:00
ffbuild build: add support for building CUDA files with clang 2019-08-04 19:08:08 +02:00
fftools cmdutils: Fix compilation on cygwin wrt SetDllDirectory and GetModuleHandle 2020-01-08 13:53:31 +02:00
libavcodec avcodec/libx264: export Producer Reference Time as packet side data 2020-01-15 23:34:20 -03:00
libavdevice Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libavfilter avfilter/f_metadata: correct check for existing metadata 2020-01-17 17:35:31 +05:30
libavformat avformat/flvenc: Avoid unnecessary seek 2020-01-17 20:17:55 +01:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/avstring: Fix warning: ISO C90 forbids mixed declarations and code 2020-01-14 19:19:30 +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 Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
presets
tests avformat/movenc: add a flag to enable CMAF compatability 2020-01-15 23:34:21 -03:00
tools tools/target_dec_fuzzer: Adjust threshold for RASC 2020-01-11 23:31:18 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore tools/python: add script to convert TensorFlow model (.pb) to native model (.model) 2019-07-01 10:23:47 -03:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog avfilter: add freezeframes video filter 2020-01-11 19:05:17 +01:00
configure configure: Change the configure check for tonemap_vaapi 2020-01-07 00:04:50 +00:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
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 Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: Update value for post 4.2 branch 2019-07-21 18:37:32 +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.