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Marton Balint 3414115cd4 avformat: convert some avio_flush() calls to avio_write_marker(AVIO_DATA_MARKER_FLUSH_POINT) 
Converting explicit avio_flush() calls helps us to buffer more data and avoid
flushing the IO context too often which causes reduced IO throughput for
non-streamed file output.

The user can control FLUSH_POINT flushing behaviour using the -flush_packets
option, the default typically means to flush unless a non-streamed file output
is used, so this change should have no adverse effect on streaming even if it
is assumed that after an avio_flush() the output buffer is clean so small
seekbacks within the output buffer will work even when the IO context is not
seekable.

Signed-off-by: Marton Balint <cus@passwd.hu>
2020-01-07 21:51:45 +01:00
compat compat/avisynth: Fix unicode compilation. 2020-01-01 16:38:28 +01:00
doc vf_dnn_processing: add support for more formats gray8 and grayf32 2020-01-07 10:51:38 -03:00
ffbuild build: add support for building CUDA files with clang 2019-08-04 19:08:08 +02:00
fftools ffmpeg: don't force source-tracked keyframes for duplicates 2020-01-05 12:01:46 +05:30
libavcodec avcodec/libvpxenc,cosmetics: prefer sizeof(var) 2020-01-06 22:35:38 -08:00
libavdevice Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libavfilter vf_dnn_processing: add support for more formats gray8 and grayf32 2020-01-07 10:51:38 -03:00
libavformat avformat: convert some avio_flush() calls to avio_write_marker(AVIO_DATA_MARKER_FLUSH_POINT) 2020-01-07 21:51:45 +01:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +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 presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests avformat/matroskadec: Fix lzo decompression 2019-12-28 22:40:13 -03:00
tools tools/target_dec_fuzzer: Stop negative block_align and sampling rate 2019-12-31 12:37:47 +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 '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog avfilter: add thistogram video filter 2019-12-29 15:33:55 +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 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
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.