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Karsten Otto 6cc6b619b9 aadec: add chapters and seeking 
read_packet reads content in chunks. Thus seek must be clamped to valid
chunk positions in the file, which in turn are relative to chapter start
positions.

So in read_header, scan for chapter headers once by skipping through the
content. Set stream time_base based on bitrate in bytes/s, for easy
timestamp to position conversion.

Then in read_seek, find the chapter containing the seek position, calculate
the nearest chunk position, and reinit the read_seek state accordingly.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-07-09 03:25:53 +02:00
compat compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
doc avfilter/setpts: add FR shorthand for FRAME_RATE 2018-07-07 21:08:08 +05:30
ffbuild Merge commit '17b6c7efb471e8ff1b8a7271f6531ba1d52bf69c' 2017-11-12 01:02:02 -03:00
fftools ffmpeg: fix -stream_loop with multiple inputs 2018-07-02 11:58:08 +02:00
libavcodec libavcodec/mpegaudiodecheader.h : detect reserved mpeg id 2018-07-09 03:25:53 +02:00
libavdevice avdevice/v4l2enc: add video4linux2 name alias 2018-06-18 16:26:23 -08:00
libavfilter lavfi/minterpolate: fix blending calc issue. 2018-07-08 23:05:34 +08:00
libavformat aadec: add chapters and seeking 2018-07-09 03:25:53 +02:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil hwcontext_opencl: remove an unused variable 2018-06-29 05:23:49 +08:00
libpostproc Bump minor versions after release/4.0 branching 2018-04-16 12:35:12 +02:00
libswresample swresample/arm: rename labels to fix xcode build error 2018-04-28 18:08:52 +02:00
libswscale lsws/rgb2rgb_template: Do not compile unneeded shuffle functions on big-endian. 2018-06-10 03:22:59 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests tests/fate/demux: Add test for d25c945247 2018-07-07 12:09:34 +02:00
tools tools/target_dec_fuzzer: set parser codec id to avoid assertion failure 2018-07-07 12:09:34 +02:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml Merge commit '4809781586d1c956005f72946a2aab5915eab350' 2017-10-28 15:08:31 -03:00
Changelog lavc: implement an ATRAC9 decoder 2018-07-03 20:15:01 +01:00
configure configure: toolchain-tsan does not need -fPIE. 2018-07-06 00:41:59 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2 Rename COPYING.GPL --> COPYING.GPLv2 and COPYING.LGPL --> COPYING.LGPLv2.1. 2009-06-05 09:51:31 +00:00
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: add markdown syntax 2014-05-28 22:38:38 +02:00
LICENSE.md Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: add myself to qsv section 2018-06-07 23:57:27 +01:00
Makefile Revert "lavd: add new API for iterating input and output devices" 2018-03-31 23:26:31 +01:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: update for git after 3.4 branchpoint 2017-10-11 02:46:23 +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.