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Andreas Rheinhardt 8370c9c206 avformat/matroskaenc: Simplify writing buffer 
If one already has the contents of a master elements in a buffer of
known size, then writing a EBML master element is no different from
writing an EBML binary element. It is overtly complicated to use
start/end_ebml_master() as these functions first write an unkown-length
size field of the appropriate length, then write the buffer's contents,
followed by a seek to the length field to overwrite it with the real
size (obtained via avio_tell() although it was already known in
advance), followed by another seek to the previous position. Just use
put_ebml_binary() instead.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-05-06 10:38:53 +02:00
compat compat/avisynth: remove avisynth headers 2020-04-05 01:17:55 +02:00
doc doc/muxers: remove hls_fmp4_init_resend parameter 2020-05-04 13:39:44 +08:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools ffmpeg: Don't require a known device to pass a frames context to an encoder 2020-05-03 16:04:27 +01:00
libavcodec lavc/bsf: add an Opus metadata bitstream filter 2020-05-05 22:25:33 +01:00
libavdevice avfoundation: Fix building on iOS 2020-04-30 14:21:47 +02:00
libavfilter s->target_i and global are in dB but s->target_tp and true_peak are 2020-05-01 21:36:07 -07:00
libavformat avformat/matroskaenc: Simplify writing buffer 2020-05-06 10:38:53 +02:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/opt: only skip evaluation for rational options 2020-05-01 17:22:58 +02:00
libpostproc libavcodec, libpostproc: Remove outcommented START/STOP_TIMER 2020-03-14 18:24:04 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale libswscale: add output support for AV_PIX_FMT_GBRAPF32 2020-05-05 20:06:58 +02:00
presets
tests avformat/url: check url root node when rel include double dot and trim double dot 2020-05-06 12:00:26 +08:00
tools tools: fix const specifier for AVInputFormat 2020-04-30 10:25:32 +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
.mailmap mailmap: fix 3-address entries 2020-03-31 04:14:14 -05:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog avformat: add demuxer for Pro Pinball Series' Soundbanks 2020-05-05 20:07:19 +02:00
configure configure: enable ffnvcodec, nvenc, nvdec for aarch64 2020-04-23 12:44:42 +02:00
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 to the general developers list 2020-04-29 16:39:16 +02:00
Makefile Makefile: Delete more created files when running "make distclean". 2020-03-11 11:43:01 +01:00
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.