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Martin Storsjö 2bb6264105 aarch64: hevcdsp: Make returns match the call site 
For cases when returning early without updating any pixels, we
previously returned to return address in the caller's scope,
bypassing one function entirely. While this may seem like a neat
optimization, it makes the return stack predictor mispredict
the returns - which potentially can cost more performance than
it gains.

Secondly, if the armv9.3 feature GCS (Guarded Control Stack) is
enabled, then returns _must_ match the expected value; this feature
is being enabled across linux distributions, and by fixing the
hevc assembly, we can enable the security feature on ffmpeg as well.

(cherry picked from commit 1f7ed8a78d)
2026-03-20 13:12:04 +02:00
.forgejo .forgejo/workflows: Test hardcoded tables 2026-02-14 20:15:13 +01:00
compat compat: Fix .def file generation for ARM64EC builds on Windows 2025-12-19 10:01:16 +00:00
doc doc/Doxyfile: set version to 8.1 2026-03-16 17:24:34 +01:00
ffbuild configure: add detection of assembler support for SME2 2026-03-04 23:52:36 +02:00
fftools fftools/ffprobe: Initialize data_dump_format_id 2026-03-15 00:49:55 +01:00
libavcodec aarch64: hevcdsp: Make returns match the call site 2026-03-20 13:12:04 +02:00
libavdevice Bump versions for release/8.1 2026-03-08 02:29:20 +01:00
libavfilter lavfi/bwdif: fix heap-buffer-overflow with small height videos 2026-03-15 00:49:57 +01:00
libavformat avformat/wsddec: Use ffio_read_size() in get_metadata() 2026-03-16 17:23:47 +01:00
libavutil avutil: attributes: fix AV_HAS_STD_ATTRIBUTE checks 2026-03-16 18:46:24 +01:00
libswresample Bump versions for release/8.1 2026-03-08 02:29:20 +01:00
libswscale swscale/output: fix integer overflows in chroma in yuv2rgba64_X_c_template() 2026-03-15 00:49:55 +01:00
presets
tests lavfi/bwdif: fix heap-buffer-overflow with small height videos 2026-03-15 00:49:57 +01:00
tools tools/target_dec_fuzzer: Adjust threshold for G2M 2026-02-23 23:45:14 +01:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore vulkan: support shader compression 2026-01-12 17:28:41 +01:00
.mailmap mailmap: add entry for myself 2025-08-08 21:51:15 +00:00
Changelog Changelog, remove "version <next>" 2026-03-16 03:42:03 +01:00
configure configure: warn about excessive stack usage 2026-03-05 16:02:04 +00:00
CONTRIBUTING.md CONTRIBUTING.md: Add Forgejo 2026-02-22 04:39:22 +00:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 all: fix whitespace/new-line issues 2025-08-03 13:48:47 +02:00
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
FUNDING.json Add FUNDING.json 2025-06-23 14:48:40 +02:00
INSTALL.md all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS MAINTAINERS: add myself as whip maintainer 2026-01-11 04:24:55 +00:00
Makefile configure: add detection of assembler support for SME2 2026-03-04 23:52:36 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: prepare for 8.1 2026-03-16 03:42:03 +01:00
RELEASE_NOTES RELEASE_NOTES: Based on the version from 8.0 2026-03-16 03:42:03 +01:00

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 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.