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Andreas Rheinhardt f0be9129ad avcodec/iff: Split extract_header into extradata and packet part 
183132872a made the iff demuxer
output extradata and made the decoder parse said extradata.
To make this extradata extensible, it came with its own internal
length field (containing the offset of the palette at the end
of the extradata). Furthermore, in order to support mid-stream
extradata changes, the packets returned by the demuxer also have
such a length field (containing the offset of the actual packet
data). Therefore the packet parsing the extradata accepted its
input from both AVPackets as well as from ordinary extradata.

Yet the demuxer never made use of this "feature": The packet's
length field always indicated that the packet data starts
immediately after the length field.

Later, commit cb928fc448 stopped
appending the length field to the packets' data; of course,
it also stopped searching for extradata in this data.

Instead it added code to parse the packet's header to the function
that parses extradata. This made this function consist of two disjoint
parts, one of which is only reachable if this function is called
from init (when parsing extradata) and one of which is reachable
when parsing packet headers.

Therefore this commit splits this function into two.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-09-15 21:29:59 +02:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc libavfilter: add vf_colorrange_cuda, CUDA-accelerated color conversion filter 2022-09-13 22:59:30 +02:00
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools fftools/ffplay: fix rotation incorrect when frame contains the displaymatrix 2022-09-15 16:16:16 +08:00
libavcodec avcodec/iff: Split extract_header into extradata and packet part 2022-09-15 21:29:59 +02:00
libavdevice avutil/internal: Move avpriv-file API to a header of its own 2022-09-03 15:41:44 +02:00
libavfilter avfilter/vf_colorspace_cuda: mark fall-through 2022-09-15 19:35:30 +02:00
libavformat avformat/dump: Avoid unnecessary implicit calculation of strlen 2022-09-14 15:03:59 +02:00
libavutil avutil/lfg: fix comment typo 2022-09-15 20:56:23 +05:30
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample swsresample/swresample: error out on invalid layouts 2022-09-14 09:52:33 -03:00
libswscale swscale/la: Add output_lasx.c file. 2022-09-10 22:56:39 +02:00
presets
tests fate/spdif: Add spdif tests 2022-09-13 14:50:01 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for UTVIDEO 2022-09-10 17:32:47 +02:00
.gitattributes
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap
.travis.yml
Changelog avformat: add bonk demuxer 2022-09-12 11:35:43 +02:00
configure libavfilter: add vf_colorrange_cuda, CUDA-accelerated color conversion filter 2022-09-13 22:59:30 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: Add ED25519 key for signing my commits in the future 2022-08-09 21:57:31 +02:00
Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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.