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Michael Niedermayer f64c0dffa1 avutil/imgutils: Optimize memset_bytes() by using av_memcpy_backptr() 
This is strongly based on code by Marton Balint, and depends on the previous commit

Fixes: Timeout
Fixes: 11502/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5664893810769920
Before: Executed clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5664893810769920 in 11209 ms
After:  Executed clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WCMV_fuzzer-5664893810769920 in  4104 ms

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2019-01-20 21:42:20 +01:00
compat additional math.h functions for djgpp 2018-11-28 22:16:07 +11:00
doc avutil: add ROI (Region Of Interest) data struct and bump version 2019-01-17 21:47:11 +00:00
ffbuild Merge commit '17b6c7efb471e8ff1b8a7271f6531ba1d52bf69c' 2017-11-12 01:02:02 -03:00
fftools ffmpeg_opt: Print a warning if more than one -vf/-af option was specified. 2019-01-15 00:27:05 +01:00
libavcodec avcodec/mips: [loongson] optimize put_hevc_pel_bi_pixels_8 with mmi. 2019-01-20 00:44:02 +01:00
libavdevice lavd/iec61883: Fix the include path for poll.h. 2019-01-16 00:13:49 +01:00
libavfilter avfilter/vf_paletteuse: don't constantly free and realloc internal frames 2019-01-17 13:24:14 -03:00
libavformat lavc/hls: Cosmetics: Fix indentation for free_segment_list 2019-01-19 10:13:19 +08:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/imgutils: Optimize memset_bytes() by using av_memcpy_backptr() 2019-01-20 21:42:20 +01:00
libpostproc postproc/postprocess_template: remove FF_REG_sp from clobber list 2018-12-22 17:41:44 +01:00
libswresample Bump minor version for master after 4.1 branchpoint 2018-11-02 00:53:07 +01:00
libswscale swscale/yuv2rgb: Return a more specific error code from ff_yuv2rgb_c_init_tables() 2019-01-01 21:11:47 +01:00
presets
tests api-h264-slice-test: fix arguments and help 2019-01-14 17:16:55 +01:00
tools tools/target_dec_fate: Add entries from around issue 500 to 700 2019-01-04 20:32:03 +01:00
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.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml Merge commit '4809781586d1c956005f72946a2aab5915eab350' 2017-10-28 15:08:31 -03:00
Changelog avformat: add HCOM demuxer 2019-01-15 10:57:29 +01:00
configure configure: Fix hymt decoder standalone compilation. 2019-01-10 19:59:01 +01:00
CONTRIBUTING.md
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MAINTAINERS MAINTAINERS: remove myself as hls demuxer maintainer 2018-10-16 01:18:00 +03:00
Makefile Makefile: Allow "make clean" to delete compat/atomics/pthread/stdatomic.o 2018-12-28 14:04:10 +01:00
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RELEASE RELEASE: bump to 4.1.git 2018-11-02 00:55:49 +01:00

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.