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Jonathan Baudanza 6b3f9c2e92 avformat/rtpdec: fix integer overflow in start_time_realtime calculation 
I encountered this problem with NTP timestamps that are extremely old,
like from January, 1990.

Although RFC3550 suggests that the timestamps in the RTCP packets use
the actual wallclock, some implementations use other clocks, such as
the CLOCK_MONOTONIC on linux.

I'm my case, I'm dealing with packets from mediasoup.

Without this patch, start_time_realtime shows up in the distance future
instead of around Jan 1900.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2024-09-23 17:08:33 +02:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc avcodec: add an export_side_data flag to export picture enhancement layers 2024-09-23 10:07:37 -03:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffmpeg_filter: ensure that the inserted filters exist 2024-09-23 09:02:23 -03:00
libavcodec avcodec: add LCEVC decoding support via LCEVCdec 2024-09-23 10:20:47 -03:00
libavdevice avdevice/jack: use av_err2str to simplify code 2024-09-13 00:30:48 +02:00
libavfilter nlmeans_vulkan: split up descriptor sets, rename buffer offset vars 2024-09-23 13:42:34 +02:00
libavformat avformat/rtpdec: fix integer overflow in start_time_realtime calculation 2024-09-23 17:08:33 +02:00
libavutil vulkan: use push descriptors where possible 2024-09-23 13:41:07 +02:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample swresample/swresample: Rectify invalid function in the documentation 2024-07-02 21:57:17 +02:00
libswscale swscale/output: Fix undefined integer overflow in yuv2rgba64_2_c_template() 2024-09-19 00:24:26 +02:00
presets
tests fftools/cmdutils: extend stream specifiers to match by disposition 2024-09-18 11:01:02 +02:00
tools tools/target_swr_fuzzer: Check av_samples_fill_arrays() for failure 2024-08-28 16:27:55 +02:00
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.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog avfilter: add an LCEVC decoding filter 2024-09-19 10:06:05 -03:00
configure avcodec: add LCEVC decoding support via LCEVCdec 2024-09-23 10:20:47 -03:00
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MAINTAINERS MAINTAINERS: add myself as vf_xfade_vulkan maintainer 2024-09-19 21:28:11 +02:00
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README.md
RELEASE RELEASE: update after 7.0 branch 2024-04-02 13:02:39 -03:00

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.