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Niklas Haas 9fd88bd092 avcodec/h2645_sei: loosen up min luminance requirements 
The H.265 specification is quite clear on this case:

> When min_display_mastering_luminance is not in the range of 1 to
> 50000, the nominal maximum display luminance of the mastering display
> is unknown or unspecified or specified by other means not specified in
> this Specification.

And so the current code is correct in marking luminance data as invalid
if min luminance is set to 0. However, this breaks playback of at least
several real-world Blu-ray releases, for example La La Land, Planet of
the Apes, and quite possibly a lot more. These come with ostensibly
valid max_luminance tags (1000 nits), but min_luminance set to 0.

Loosen up this requirement by guarding it behind FF_COMPLIANCE_STRICT.
We still reject blatantly invalid metadata (wrong value range on
luminance, max set to 0, max below min, min above 50 nits etc.), so this
shouldn't cause any unintended regressions.

Fixes: https://github.com/mpv-player/mpv/issues/14177
2024-05-28 18:11:57 +02:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc doc/ffmpeg: document -channel_layout/ch_layout options 2024-05-27 21:46:47 +02:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffplay: allow unused format options which are also codec options 2024-05-27 21:46:47 +02:00
libavcodec avcodec/h2645_sei: loosen up min luminance requirements 2024-05-28 18:11:57 +02:00
libavdevice avdevice/dshow: fix badly indented line 2024-05-28 03:48:04 +02:00
libavfilter avfilter/af_atempo: Fix indentation 2024-05-23 10:45:55 +02:00
libavformat avformat/hls: update current segment reference before use 2024-05-28 15:02:02 +02:00
libavutil avutil/tests/opt: Check av_set_options_string() for failure 2024-05-28 03:48:05 +02:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswscale swscale/yuv2rgb: Use 64bit for brightness computation 2024-05-28 03:48:06 +02:00
presets
tests checkasm: add h263dsp.{h,v}_loop_filter 2024-05-27 22:42:07 +03:00
tools tools/decode_simple: Check avcodec_send_packet() for errors on flushing 2024-05-28 03:48:06 +02:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap .mailmap: Update my mailmap entry 2024-02-23 00:17:21 +01:00
Changelog Changelog: add DVB compatible information for VVC decoder 2024-05-21 20:20:25 +08:00
configure configure: enable ffnvcodec, nvenc, nvdec for FreeBSD 2024-05-26 19:25:51 -04:00
CONTRIBUTING.md
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.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add myself as *BSD maintainer 2024-05-13 03:40:16 +02:00
Makefile riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
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.