RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-29 02:42:21 +00:00
Code Issues Projects Releases Wiki Activity
FFmpeg git repo
97,482 Commits 37 Branches 400 Tags 246 MiB
C 90.3%
Assembly 7.8%
Makefile 1.3%
C++ 0.2%
Objective-C 0.2%
Other 0.1%
f4d8fad802
Go to file
Martin Storsjö f4d8fad802 dnn-layer-mathbinary-test: Fix tests for cases with extra intermediate precision 
This fixes tests on 32 bit x86 mingw with clang, which uses x87
fpu by default.

In this setup, while the get_expected function is declared to
return float, the compiler is (especially given the optimization
flags set) free to keep the intermediate values (in this case,
the return value from the inlined function) in higher precision.

This results in the situation where 7.28 (which actually, as
a float, ends up as 7.2800002098), multiplied by 100, is
728.000000 when really forced into a 32 bit float, but 728.000021
when kept with higher intermediate precision.

For the multiplication case, a more suitable epsilon would e.g.
be 2*FLT_EPSILON*fabs(expected_output), but just increase the
current hardcoded threshold for now.

Signed-off-by: Martin Storsjö <martin@martin.st>
2020-04-24 14:41:06 +03:00
compat compat/avisynth: remove avisynth headers 2020-04-05 01:17:55 +02:00
doc doc/APIChanges: add AV_PKT_DATA_DOVI_CONF entry 2020-04-23 08:06:42 +08:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools fftools/ffprobe: support DOVI sidedata 2020-04-23 08:06:07 +08:00
libavcodec avcodec/mjpeg2jpeg_bsf: Remove unnecessary header 2020-04-24 05:00:15 +02:00
libavdevice lavd/avfoundation.m: Do not use transport controls for screen capture devices. 2020-04-22 16:52:36 +02:00
libavfilter scale_vulkan: take frame cropping parameters in account when scaling 2020-04-23 18:23:45 +01:00
libavformat avformat/mux: Remove unnecessary headers 2020-04-24 04:44:14 +02:00
libavresample
libavutil lavutil: add DOVI related header 2020-04-23 08:05:15 +08:00
libpostproc libavcodec, libpostproc: Remove outcommented START/STOP_TIMER 2020-03-14 18:24:04 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale swscale: aarch64: Don't clobber callee-saved registers v8-v15 2020-04-21 23:41:13 +03:00
presets
tests dnn-layer-mathbinary-test: Fix tests for cases with extra intermediate precision 2020-04-24 14:41:06 +03:00
tools dnn/native: add native support for divide 2020-04-22 13:15:00 +08:00
.gitattributes
.gitignore
.mailmap mailmap: fix 3-address entries 2020-03-31 04:14:14 -05:00
.travis.yml
Changelog avformat/mpegtsenc: use the correct stream_types and write HDMV descriptors for m2ts 2020-04-21 21:28:42 +02:00
configure configure: enable ffnvcodec, nvenc, nvdec for aarch64 2020-04-23 12:44:42 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: add my gpg fingerprint 2020-03-23 23:37:19 +01:00
Makefile Makefile: Delete more created files when running "make distclean". 2020-03-11 11:43:01 +01:00
README.md
RELEASE RELEASE: Update value for post 4.2 branch 2019-07-21 18:37:32 +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 a mean to alter decoded Audio and Video through chain of 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.