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Andreas Rheinhardt bf4909f0a3 avformat/asfdec_o: Export metadata that applies to the whole file 
The ASF specification of Metadata Objects' stream number is as follows:

"Specifies whether the entry applies to a specific digital media stream
or whether it applies to the whole file. A value of 0 in this field
indicates that it applies to the whole file; otherwise, the entry
applies only to the indicated stream number and must be between 1 and
127."

Yet the asf_o demuxer (the one originating from Libav) has always
treated such metadata as if it applied to a stream even though no stream
with a stream number may exist in a valid ASF file. This is fixed in
this commit; it affected e.g. the file
wma_with_metadata_library_object_tag_trimmed.wma from the FATE suite.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
 		2020-11-15 18:20:54 +01:00
compat avfilter/scale_cuda: add lanczos algorithm 2020-11-04 01:43:21 +01:00
doc avfilter: add speechnorm filter 2020-11-15 12:59:40 +01:00
ffbuild ffbuild: Refine MIPS handling 2020-07-23 16:30:02 +02:00
fftools fftools/ffmpeg: fix the wrong bitrate and speed stats 2020-10-31 09:49:10 +08:00
libavcodec avcodec/cbs_av1: remove dead code 2020-11-13 20:36:06 -03:00
libavdevice avdevice/xcbgrab: Add select_region option 2020-11-06 23:25:13 -05:00
libavfilter avfilter: add speechnorm filter 2020-11-15 12:59:40 +01:00
libavformat avformat/asfdec_o: Export metadata that applies to the whole file 2020-11-15 18:20:54 +01:00
libavresample
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libavutil avutil/hwcontext_cuda: fix edge case with non-even frame heights 2020-11-04 01:36:48 +01:00
libpostproc
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libswresample swresample/audioconvert: Fix left shift of negative value 2020-09-30 10:50:45 +02:00
libswscale lsws/x86/yuv2rgb: Fix compilation with mmxext or ssse3 disabled. 2020-11-14 15:37:57 +01:00
presets
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tests aviobuf: Increase the default SHORT_SEEK_THRESHOLD to 32 KB 2020-11-12 14:05:43 +02:00
tools tools/target_dem_fuzzer: Consider it an EIO when reading position wraps around 64bit 2020-11-07 20:50:33 +01:00
.gitattributes
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.gitignore
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.mailmap mailmap: add entry for myself 2020-07-13 11:24:04 +08:00
.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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Changelog avfilter: add speechnorm filter 2020-11-15 12:59:40 +01:00
INSTALL.md
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LICENSE.md
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MAINTAINERS avformat: add amv muxer 2020-11-09 14:58:38 +10:00
Makefile Add support for building fuzzer tools for an individual demuxer 2020-10-12 21:01:48 +02:00
README.md
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RELEASE
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configure avcodec/dxva2: add AV1 decode support 2020-11-12 15:55:16 +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.