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Jonas Karlman bb10d3d5a1 avutil/hwcontext: Add hwdevice type for V4L2 Request API 
Add a hwdevice type for use with V4L2 Request API stateless decoding.

AVV4L2RequestFramesContext is expected to be filled with a V4L2 coded
pixel format and optional codec-specific extended controls before an
AVHWFramesContext is initialized.

Once initialized AVV4L2RequestFramesContextInternal describe the opened
V4L2 stateless decoder session, with details about media/video file
descriptors, formats of CAPTURE/OUTPUT queues and buffer pools for
creating CAPTURE/OUTPUT buffers.

AVHWFramesContext.pool defaults to create frame descriptors around a
CAPTURE buffer, and frames are returned with AVFrame.data[0] pointing
to a AVDRMFrameDescriptor and AVFrame.data[1] the CAPTURE buffer index.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
2025-12-20 23:45:35 +00:00
.forgejo avutil/hwcontext: Add hwdevice type for V4L2 Request API 2025-12-20 23:45:35 +00:00
compat compat: Fix .def file generation for ARM64EC builds on Windows 2025-12-19 10:01:16 +00:00
doc fate.sh: Allow specifying --ar through a separate variable 2025-12-19 18:41:23 +00:00
ffbuild configure: add detection of assembler support for SME 2025-12-09 21:38:38 +00:00
fftools ffprobe: Include the RFC 4281 "mime codec string" in show_stream output 2025-12-12 18:40:01 +02:00
libavcodec avcodec/exif: parse additional EXIF IFDs 2025-12-20 11:53:23 -05:00
libavdevice avdevice/gdigrab: suppress int to pointer cast warning 2025-12-03 23:45:44 +00:00
libavfilter lavfi/vf_blackdetect: R-V V count_pixels_16 2025-12-16 17:30:29 +02:00
libavformat avformat/whip: Fix leak of dtls_fingerprint 2025-12-19 21:45:24 +01:00
libavutil avutil/hwcontext: Add hwdevice type for V4L2 Request API 2025-12-20 23:45:35 +00:00
libswresample swresample/soxr_resample: pass initialized data to soxr_process() in flush() 2025-12-08 21:31:13 +00:00
libswscale swscale/ops: update comment on SWS_COMP_EXACT 2025-12-20 13:52:45 +00:00
presets
tests avcodec/exif: parse additional EXIF IFDs 2025-12-20 11:53:23 -05:00
tools tools/sofa2wavs: fix build on Windows 2025-11-29 21:43:12 +00:00
.gitattributes
.gitignore .gitignore: Add config_components.asm 2025-11-02 13:10:58 +00:00
.mailmap mailmap: add entry for myself 2025-08-08 21:51:15 +00:00
Changelog avformat: add a raw JPEG-XS muxer and demuxer 2025-12-13 19:03:36 -03:00
configure avutil/hwcontext: Add hwdevice type for V4L2 Request API 2025-12-20 23:45:35 +00:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 all: fix whitespace/new-line issues 2025-08-03 13:48:47 +02:00
COPYING.LGPLv3
CREDITS
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
MAINTAINERS MAINTAINERS: Update the entries for AMF 2025-10-28 21:06:37 +00:00
Makefile configure: add detection of assembler support for SME 2025-12-09 21:38:38 +00:00
README.md
RELEASE RELEASE: update to 8.0 2025-08-14 08:42:29 -04:00

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.