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Matt Wolenetz 133ddd3875 avformat/mov: Initialize a potential gap in ctts_data in mov_build_index 
mov_read_ctts ignores ctts entries having count <= 0. Generally, the
aggregate of all ctts entries' count fields resulting from mov_read_ctts
can be less than the corresponding sample_count.

mov_build_index attempts to normalize any existing ctts_data counts to
be 1, to make a 1-1 mapping of a ctts_data entry to a sample.

That 1-1 mapping left a tail of uninitialized ctts_data entries when the
aggregate, normalized ctts_count < sample_count.

Even more generally, later usage of ctts_data may depend on the entire
ctts_allocated_size having been initialized.

This change memsets the entire allocation of the normalized ctts_data in
mov_build_index, to prevent use of uninitialized data later.

BUG=816787

Change-Id: I7fd7db255e3aeed076ee32c90cb2df211741c052
Reviewed-on: https://chromium-review.googlesource.com/947110
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-03-05 01:16:34 +01:00
compat compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
doc doc/bitstream_filters: correct dump_extra bsfs docs. 2018-03-03 23:01:41 +01:00
ffbuild Merge commit '17b6c7efb4' 2017-11-12 01:02:02 -03:00
fftools fftools/ffmpeg: replace call to av_strerror with av_err2str 2018-02-27 08:34:35 +01:00
libavcodec avcodec/vaapi: mask unused bits in bitplane_present.value 2018-03-04 22:17:33 +00:00
libavdevice avdevice: add android_camera indev 2018-02-22 00:29:27 +01:00
libavfilter avfilter/avf_concat: add next command 2018-03-01 12:54:06 +01:00
libavformat avformat/mov: Initialize a potential gap in ctts_data in mov_build_index 2018-03-05 01:16:34 +01:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil parseutils: add support for ms and us suffix for AV_OPT_TYPE_DURATION 2018-03-02 22:57:08 +01:00
libpostproc postproc: Drop deprecated qp typedef 2017-10-22 00:35:23 -03:00
libswresample swresample/rematrix: fix update of channel matrix if input or output layout is undefined 2018-02-19 08:32:25 +01:00
libswscale swscale: Introduce a helper to identify semi-planar formats 2018-03-03 15:20:19 -08:00
presets
tests swscale: Add p016 output support and generalise yuv420p1x to p010 2018-03-02 14:52:48 -08:00
tools fftools, tools, examples: migrate to AVFormatContext->url 2018-01-28 23:06:43 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml Merge commit '4809781586' 2017-10-28 15:08:31 -03:00
Changelog compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
configure compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md Merge commit '4fef648d10' 2017-03-15 22:07:47 +01:00
MAINTAINERS Add myself as codec2 maintainer 2018-02-24 17:06:31 +01:00
Makefile lavd: add new API for iterating input and output devices 2018-02-06 18:57:42 +00:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: update for git after 3.4 branchpoint 2017-10-11 02:46:23 +02:00

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.