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Andreas Rheinhardt 59f7d68514 avcodec/magicyuv: Fix edge case of building Huffman table The MagicYUV format stores Huffman tables in its bitstream by coding the length of a given symbol; it does not code the actual code directly, instead this is to be inferred by the rule that a symbol is to the left of every shorter symbol in the Huffman tree and that for symbols of the same length the symbol is ascending from left to right. With one exception, this is also what our decoder did. The exception only matters when there are codes of length 32, because in this case the first symbol of this length did not get the code 0, but 1; e.g. if there were exactly two nodes of length 32, then they would get assigned the codes 1 and 2 and a node of length 31 will get the 31-bit code 1 which is a prefix of the 32 bit code 2, making the Huffman table invalid. On the other hand, if there were only one symbol with the length 32, the earlier code would accept this un-Huffman-tree. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>		4 years ago
compat	compat/cuda/ptx2c: remove shell loop; fix BSD sed compat	5 years ago
doc	avdevice/decklink_dec: add support for querying RP188 High Frame Rate timecode	4 years ago
ffbuild	ffbuild: Refine MIPS handling	4 years ago
fftools	fftools/ffprobe: use av_timecode_make_smpte_tc_string2	4 years ago
libavcodec	avcodec/magicyuv: Fix edge case of building Huffman table	4 years ago
libavdevice	avdevice/lavfi: av_malloc -> av_malloc_array	4 years ago
libavfilter	dnn: add a new interface DNNModel.get_output	4 years ago
libavformat	avformat/http: fix memleak	4 years ago
libavresample	…
libavutil	avutil/pixfmt: improve definition of AVColorRange	4 years ago
libpostproc	Bump minor versions after branching 4.3	5 years ago
libswresample	swresample/rematrix: handle 22.2 as a 9 channel layout	4 years ago
libswscale	swscale/x86/output: add missing AVX2 support preprocessor wrappers	4 years ago
presets	…
tests	avformat/movenc: use more fall-back values for average bit rate fields	4 years ago
tools	tools/target_dec_fuzzer: Adjust VQA threshold	4 years ago
.gitattributes	…
.gitignore	tools/python: add script to convert TensorFlow model (.pb) to native model (.model)	5 years ago
.mailmap	mailmap: add entry for myself	4 years ago
.travis.yml	Merge commit '899ee03088d55152a48830df0899887f055da1de'	6 years ago
CONTRIBUTING.md	…
COPYING.GPLv2	…
COPYING.GPLv3	…
COPYING.LGPLv2.1	…
COPYING.LGPLv3	…
CREDITS	…
Changelog	lavc/qsvdec: Add QSV AV1 decoder	4 years ago
INSTALL.md	…
LICENSE.md	avfilter/vf_geq: Relicense to LGPL	5 years ago
MAINTAINERS	MAINTAINERS: remove my public key fingerprint	4 years ago
Makefile	tools:target_dem_fuzzer: Split into a fuzzer fuzzing at the protocol level and one fuzzing a fixed demuxer input	4 years ago
README.md	…
RELEASE	RELEASE: We are after the 4.3 branch point, update for that	5 years ago
configure	lavc/qsvdec: Add QSV AV1 decoder	4 years ago

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.