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Frank Plowman dfcf5f828d lavc/vvc: Fix check whether QG is in first tile col 
The second part of this condition is intended to check whether the
current quantisation group is in the first CTU column of the current
tile.  The issue is that ctb_to_col_bd gives the x-ordinate of the first
column of the current tile *in CTUs*, while xQg gives the x-ordinate of
the quantisation group *in samples*.  Rectify this by shifting xQg by
ctb_log2_size to get xQg in CTUs before comparing.

Fixes FFVVC issues #201 and #203.
2024-03-20 22:27:19 +08:00
compat
doc doc/muxers/gif: apply consistency fixes 2024-03-19 17:23:20 +01:00
ffbuild makefile: Clean up missed object files with "make clean" 2024-03-10 23:45:51 +02:00
fftools ffmpeg: set extra_hw_frames to account for frames held in queues 2024-03-19 22:56:56 +00:00
libavcodec lavc/vvc: Fix check whether QG is in first tile col 2024-03-20 22:27:19 +08:00
libavdevice avdevice/alldevices: Mark iterators as av_cold 2024-03-17 15:10:05 +01:00
libavfilter libavfi/dnn: add LibTorch as one of DNN backend 2024-03-19 14:48:58 +08:00
libavformat avformat/codec2: Don't allocate Codec2Context for muxer 2024-03-20 12:46:23 +01:00
libavutil lavu/hwcontext_vulkan: check PCI ID if possible 2024-03-19 09:37:39 +08:00
libpostproc libs: bump major version for all libraries 2024-03-07 11:29:43 -03:00
libswresample libs: bump major version for all libraries 2024-03-07 11:29:43 -03:00
libswscale avutil/x86util: Fix broken pre-SSE4.1 PMINSD emulation 2024-03-17 13:52:27 +01:00
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tests fate/atrac: Add atrac->aea, atrac->matroska remux tests 2024-03-19 03:17:12 +01:00
tools tools/target_dec_fuzzer: adjust threshold for AV_CODEC_ID_IFF_ILBM 2024-03-19 04:10:48 +01:00
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Changelog Changelog: Add Support PacketTypeMetadata of PacketType in enhanced flv 2024-03-18 18:38:48 +08:00
configure libavfi/dnn: add LibTorch as one of DNN backend 2024-03-19 14:48:58 +08:00
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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.