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Neko Asakura bc8df3afc5
avformat/rtpenc: use unsigned type for ssrc option 
The ssrc option used AV_OPT_TYPE_INT with range [INT_MIN, INT_MAX],
but the underlying struct field is uint32_t and RFC 3550 defines SSRC
as a 32-bit identifier covering the full [0, UINT32_MAX] range. This
caused ffmpeg to reject any SSRC value above INT_MAX (~2.1 billion),
which is roughly half of all valid values.

The auto-generated fallback path (av_get_random_seed()) already
returns uint32_t and can produce values above INT_MAX, creating an
inconsistency where the automatic path succeeds but the explicit
-ssrc option rejects the same value.

Change the option to AV_OPT_TYPE_UINT with range [0, UINT32_MAX]
to match the field type and allow the full identifier space.

Fixes ticket #9080.

Signed-off-by: Neko Asakura <neko.asakura@outlook.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 69568479a9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2026-05-04 15:57:12 +02:00
.forgejo forgejo: backport CI job names 2026-01-02 20:02:52 +01:00
compat compat: Fix the fallback definition of stdc_trailing_zeros 2024-09-24 14:00:27 +03:00
doc doc/mailing-list-faq.texi: Fix typo in link anchor 2026-05-04 15:57:01 +02:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffmpeg_opt: limit recursion of presets 2026-05-04 15:57:09 +02:00
libavcodec avcodec/imm5: Dont pass EAGAIN on as is 2026-05-04 15:57:12 +02:00
libavdevice avdevice/gdigrab: suppress int to pointer cast warning 2026-05-04 15:56:58 +02:00
libavfilter vfilter/vf_find_rect: Clamp x/y min/max to valid values 2026-05-04 15:57:05 +02:00
libavformat avformat/rtpenc: use unsigned type for ssrc option 2026-05-04 15:57:12 +02:00
libavutil avutil/dovi_meta: Document valid range for index of av_dovi_get_ext() 2026-05-04 15:57:05 +02:00
libpostproc postproc/postprocess_template: fix dering with a 16x16 image 2025-06-11 17:29:46 +02:00
libswresample swresample: Check ch layouts in swr_alloc_set_opts2() 2026-05-04 15:57:09 +02:00
libswscale swscale/rgb2rgb_template: fix signed shift into sign bit 2026-05-04 15:57:09 +02:00
presets
tests tests: Fix fate-run.sh to handle busybox-w32 absolute paths 2026-02-03 20:56:48 +00:00
tools forgejo: backport CI to release/7.1 2025-12-07 15:54:59 +00:00
.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: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog Changelog: update 2025-11-21 00:07:39 +01:00
configure configure: Recognize uname "Windows_NT" as using an .exe suffix 2026-02-03 20:56:48 +00:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 all: apply linter fixes 2025-12-07 15:54:59 +00:00
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md INSTALL: explain the circular dependency issue and solution 2025-01-03 18:28:37 +01:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Add entry for samples-request 2025-06-11 17:29:48 +02:00
Makefile add tools/target_swr_fuzzer 2024-08-08 15:26:52 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE updatze for 7.1.3 2025-11-19 16:46:44 +01:00
RELEASE_NOTES RELEASE_NOTES: Based on the version from 5.1 2024-09-29 18:47:04 +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 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.