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FFmpeg with custom patches for LAV Filters
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Andreas Rheinhardt 25e0e087c4 configure: Disable linker warnings for common symbols
Common symbols are not part of ISO-C and therefore not used
by FFmpeg at all. Yet linker warnings to ensure it stays
that way are nevertheless wrong, because the existence of
common symbols does not imply that there is a bug in our code.

More precisely, Clang's ASAN implementation uses a common symbol
___asan_globals_registered when used on Elf targets with
the -fsanitize-address-globals-dead-stripping option;
said option is the default since Clang 17 [1].
This leads to 1883 warnings about ___asan_globals_registered
when linking here.
(Even without that option there were warnings like
_ZN14__interception10real_vforkE being overridden.)

Said warning is also unnecessary: The proper way to ensure
that our code is free of common symbols is to let the compiler
enforce this. But this is already the default since GCC 10
and Clang 11, so there is no risk of introducing our own
common symbols.

[1]: https://reviews.llvm.org/D152604

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-02-26 22:09:19 +01:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avformat/mov: add support for tile HEIF still images 2024-02-26 12:21:12 -03:00
ffbuild riscv: test for assembler support 2023-12-08 17:21:09 +02:00
fftools fftools/ffmpeg_mux: Fix use of uninitialized variable 2024-02-25 13:41:56 +01:00
libavcodec avcodec/x86/hevc: fix luma 12b overflow 2024-02-26 12:29:58 +01:00
libavdevice all: use designated initializers for AVOption.unit 2024-02-14 14:53:41 +01:00
libavfilter avfilter/tonemap_vaapi: Remove duplicate format check 2024-02-26 14:52:06 +08:00
libavformat avformat/mov: add support for tile HEIF still images 2024-02-26 12:21:12 -03:00
libavutil avutil/hwcontext: Don't check before av_buffer_unref() 2024-02-25 02:42:04 +01:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswresample all: use designated initializers for AVOption.unit 2024-02-14 14:53:41 +01:00
libswscale libswscale/utils: Fix bayer to yuvj 2024-02-21 18:24:17 +01:00
presets
tests fate/mov: add tests for HEIF samples with derived images 2024-02-26 12:21:12 -03:00
tools tools: Add target_sws_fuzzer.c 2024-02-21 18:24:17 +01:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap .mailmap: Update my mailmap entry 2024-02-23 00:17:21 +01:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog Require compilers to support C11. 2024-02-18 07:38:28 +01:00
configure configure: Disable linker warnings for common symbols 2024-02-26 22:09:19 +01:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +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: remove myself from here 2024-02-04 22:22:42 +01:00
Makefile tools: Add target_sws_fuzzer.c 2024-02-21 18:24:17 +01:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +02:00

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 means to alter decoded audio and video through a directed graph of connected 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.