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Andreas Rheinhardt b18aaf209f fftools/ffmpeg_dec: Always receive frames from decoder 
Up until now if avcodec_send_packet() returned an error,
no attempt to receive a frame from the decoder would be made.
Instead the decoder was presumed to be drained, so that more
packets could be sent to it. Yet this need not be so:
It can happen that a packet would decode to multiple frames
and that decoding the first of these (the one that is decoded
during the avcodec_send_packet() call) returns an error,
in which case the decoder is not yet ready to receive more
input as the remaining parts of the packet have not been decoded
yet. In this case, an AERROR_BUG is triggered.

This happens in ticket #11553 with VP9 (which uses a BSF
to split VP9 superframes and is therefore affected by this).

Fix this by always calling avcodec_receive_frame() unless
xerror is set.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-05-15 01:23:41 +02:00
compat compat/cuda: add device side printf function 2025-05-14 22:08:33 +02:00
doc Remove libpostproc 2025-05-07 15:35:47 +02:00
ffbuild ffbuild: fix include path for uninstalled .pc files 2025-04-22 21:04:36 +02:00
fftools fftools/ffmpeg_dec: Always receive frames from decoder 2025-05-15 01:23:41 +02:00
libavcodec x86/vvcdec: sao, add avx2 support 2025-05-14 20:55:39 +08:00
libavdevice avfoundation: Fix compilation for OSes other than macOS and iOS 2025-04-04 17:12:33 +03:00
libavfilter Remove libpostproc 2025-05-07 15:35:47 +02:00
libavformat avformat/av1dec: Avoid branch for setting position 2025-05-15 01:20:46 +02:00
libavutil Remove libpostproc 2025-05-07 15:35:47 +02:00
libswresample libs: bump major version for all libraries 2025-03-28 14:44:34 -03:00
libswscale swscale/x86/rgb2rgb: Deduplicate ASM constants 2025-04-13 22:49:21 +02:00
presets
tests checkasm: hevc sao, use checkasm_check_padded 2025-05-14 20:55:39 +08:00
tools Remove libpostproc 2025-05-07 15:35:47 +02:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore ffmpeg/repo: Add dot-folders in the repository root to .gitignore 2025-04-19 17:29:12 +02:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog avcodec: add APV encoder using liboapv 2025-05-04 16:21:35 -03:00
configure Remove libpostproc 2025-05-07 15:35:47 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
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: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS Remove libpostproc 2025-05-07 15:35:47 +02:00
Makefile configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +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.