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FFmpeg git repo
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Jun Zhao 60d79b1df9 lavc/aac_ac3_parser: improve the raw AAC file bit rate calculation 
Now we just use one ADTS raw frame to calculate the bit rate, it's
lead to a larger error when get the duration from bit rate, the
improvement cumulate Nth ADTS frames to get the average bit rate.

e,g used the command get the duration like:
ffprobe -show_entries format=duration -i fate-suite/aac/foo.aac

before this improvement dump the duration=2.173935
after this improvement  dump the duration=1.979267

in fact, the real duration can be get by command like:
ffmpeg -i fate-suite/aac/foo.aac -f null /dev/null with time=00:00:01.97

Also update the fate-adtstoasc_ticket3715.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2020-06-26 09:53:36 +08:00
compat compat/cuda/ptx2c: remove shell loop; fix BSD sed compat 2020-06-01 22:10:41 -05:00
doc avfilter/zoompan: add in_time variable 2020-06-25 10:27:07 +02:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools fftools/ffmpeg_filter: add -autoscale to disable/enable the default scale 2020-06-18 16:31:09 +08:00
libavcodec lavc/aac_ac3_parser: improve the raw AAC file bit rate calculation 2020-06-26 09:53:36 +08:00
libavdevice lavdevice: Add AudioToolbox output device. 2020-06-15 15:09:33 +02:00
libavfilter avfilter/zoompan: add in_time variable 2020-06-25 10:27:07 +02:00
libavformat avformat/microdvddec: skip malformed lines without frame number. 2020-06-25 12:50:22 +02:00
libavresample
libavutil lavu/internal: Fix comment for avpriv_dict_set_timestamp 2020-06-14 12:27:10 +08:00
libpostproc Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswresample Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswscale swscale: cosmetic fixes 2020-06-14 16:34:07 +01:00
presets
tests lavc/aac_ac3_parser: improve the raw AAC file bit rate calculation 2020-06-26 09:53:36 +08:00
tools dnn_backend_native_layer_mathunary: add atan support 2020-06-25 08:41:50 +08:00
.gitattributes
.gitignore
.mailmap mailmap: add entry for myself 2020-06-17 22:11:34 +08:00
.travis.yml
Changelog avformat: add MCC demuxer 2020-06-18 21:31:13 +02:00
configure lavdevice: Add AudioToolbox output device. 2020-06-15 15:09:33 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS oggdec: remove the oggparsedaala subdemuxer 2020-05-23 19:07:20 +01:00
Makefile Makefile: Delete more created files when running "make distclean". 2020-03-11 11:43:01 +01:00
README.md
RELEASE RELEASE: We are after the 4.3 branch point, update for that 2020-06-10 00:20:24 +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.