It uses the int64_t instead of the double member. (This code can currently not be reached: av_opt_get() calls av_opt_find2() with NULL as unit in which case AV_OPT_TYPE_CONST options are never returned, leading av_opt_get() to always return AVERROR_OPTION_NOT_FOUND when searching for AV_OPT_TYPE_CONST*. For the same reason the code read_number() will never be called from get_number() when searching for an option of type AV_OPT_TYPE_CONST. The other callers of read_number() also only call it with types other than AV_OPT_TYPE_CONST.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
…
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
andqt-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.
Description
Languages
C
90.6%
Assembly
7.5%
Makefile
1.3%
C++
0.2%
Objective-C
0.1%
Other
0.1%