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Andreas Rheinhardt 6a1bf8634a avformat/matroskaenc: Fix ReferenceBlock timestamp 
In order to indicate that the frames in a BlockGroup are not keyframes,
one has to add a ReferenceBlock element containing the timestamp of a
referenced Block that has already been written. The timestamp ought to be
relative to the timestamp of the Block it is attached to. Yet the
Matroska muxer used the relative timestamp of the preceding Block of the
track, i.e. the timestamp of the preceding block relative to the
timestamp of the Cluster containing said block (that need not be the
Cluster containing the current Block). This has been fixed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2020-01-11 11:18:58 -03:00
compat compat/avisynth: Fix unicode compilation. 2020-01-01 16:38:28 +01:00
doc doc/general: update table AV1 entry for librav1e 2020-01-11 11:01:17 +05:30
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/utils: replace avctx->internal with avci for better readability 2020-01-10 17:52:14 +01:00
libavdevice Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libavfilter avfilter/af_dynaudnorm: use better limits for maximal amplification 2020-01-11 14:08:52 +01:00
libavformat avformat/matroskaenc: Fix ReferenceBlock timestamp 2020-01-11 11:18:58 -03:00
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
tests fate: Don't use depreceated keepside option 2020-01-10 12:28:18 -03:00
tools tools/target_dec_fuzzer: Stop negative block_align and sampling rate 2019-12-31 12:37:47 +01:00
.gitattributes
.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
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.