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Andreas Rheinhardt 11ff9cb5e9 avcodec/put_bits: Add functions for amount of bytes written/left Often a caller doesn't want the amount of bits written via a PutBitContext, but the amount of bytes. This in particular happens after one has flushed the PutBitContext (e.g. at the end of encoding, when one wants to know the actual packet size). The current way of doing this is with put_bits_count(pb)/8 (or (put_bits_count(pb) + 7)/8). Yet this has some issues: It contains implicit multiplications and divisions by 8 with a cast in between; it obscurs the intent; and it restricts the size of the buffer to (currently) INT_MAX/8 (or to 1/8 of the maximum of whatever put_bits_count() returns), although said restriction is not really necessary for users that don't need a bitcount. Corresponding functions for the amount of bytes left have also been addded. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>		4 years ago
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doc	avcodec/dvbsubdec: Support computing clut only once	4 years ago
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libavcodec	avcodec/put_bits: Add functions for amount of bytes written/left	4 years ago
libavdevice	Bump minor versions after release branch	4 years ago
libavfilter	avfilter/vf_paletteuse: Fix left shift outside of range of int	4 years ago
libavformat	avformat/wtvdec: Check size in SBE2_STREAM_DESC_EVENT / stream2_guid	4 years ago
libavresample	…
libavutil	avutil/frame: Deprecate av_get_colorspace_name()	4 years ago
libpostproc	Bump minor versions after release branch	4 years ago
libswresample	Bump minor versions after release branch	4 years ago
libswscale	Bump minor versions after release branch	4 years ago
presets	…
tests	tests/dnn/dnn-layer-mathunary-test: add unit test for exp	4 years ago
tools	tools/target_dec_fuzzer: Adjust threshold for H264	4 years ago
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MAINTAINERS	MAINTAINERS: add myself as adpcm maintainer	4 years ago
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configure	configure: select child muxers for rtp_mpegts	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.