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Michael Niedermayer a4fec9a7ea rtmppkt: Check for packet size mismatches 
When receiving fragmented packets, the first packet declares the size,
and the later ones normally are small follow-on packets that don't repeat
the size and the other header fields. But technically, the later fragments
also can have a full header, declaring a different size than the previous
packet.

If the follow-on packet declares a larger size than the initial one, we
could end up writing outside of the allocation.

This fixes out of bounds writes.

Found-by: Paul Cher <paulcher@icloud.com>
Reviewed-by: Paul Cher <paulcher@icloud.com>

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
 		2016-12-15 15:45:59 +02:00
compat compat/atomics: add typecasts in atomic_compare_exchange_strong() 2016-12-08 15:53:58 -05:00
doc lavc: add a bitstream filter for splitting VP9 superframes 2016-12-14 09:06:45 +01:00
libavcodec arm64: replace 'bic' with immediate with 'and' with inverted immediate 2016-12-14 21:53:05 +01:00
libavdevice build: Fix dependencies for alsa/jack/sndio support 2016-12-09 08:42:34 +01:00
libavfilter lavfi: Add VAAPI deinterlacer 2016-12-10 16:55:44 +00:00
libavformat rtmppkt: Check for packet size mismatches 2016-12-15 15:45:59 +02:00
libavresample Fix some mismatches between function parameter and doxygen parameter names. 2016-11-21 14:29:10 +01:00
libavutil ppc: Merge types_altivec.h into util_altivec.h 2016-12-14 14:08:43 +01:00
libswscale ppc: Centralize compiler-specific altivec.h #include handling in one place 2016-12-14 14:08:43 +01:00
presets
…
tests fate: Add h264 test for frame num gaps 2016-12-14 11:01:50 +01:00
tools build: Move entries related to building TOOLS to a subdirectory Makefile 2016-12-07 11:02:31 +01:00
.gitattributes
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.gitignore build: Ignore generated mapfile and remove it on distclean 2016-05-27 11:27:24 +02:00
.travis.yml travis: Enable OSX integration 2015-11-17 16:51:00 +01:00
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 mov: Export spherical information 2016-12-07 14:35:06 -05:00
INSTALL
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LICENSE Remove the legacy X11 screen grabber 2016-07-29 19:03:10 +02:00
Makefile build: Use _extralibs variable names instead of _libs everywhere 2016-12-09 18:57:03 +01:00
README
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README.md doc: Add travis badge 2015-09-14 00:19:08 +02:00
RELEASE Make the RELEASE file match with the most recent tag 2016-10-14 13:52:51 -04:00
arch.mak ppc: vsx: Implement float_dsp 2015-05-31 12:07:11 +02:00
avconv.c avconv: Fix the audio next dts computation 2016-11-29 10:38:01 +01:00
avconv.h avconv: support parsing bitstream filter options 2016-11-02 10:08:28 +01:00
avconv_dxva2.c avconv_dxva2: add a profile check for hevc 2016-07-20 16:33:09 +02:00
avconv_filter.c avconv: make sure the filtergraph is freed on init failure 2016-10-02 11:41:45 +02:00
avconv_opt.c avconv_opt: Consistently iterate through hwaccels array in all cases 2016-11-13 19:06:38 +01:00
avconv_qsv.c avconv_qsv: use the actual pixel format provided by lavc 2016-07-22 19:08:12 +02:00
avconv_vaapi.c avconv_vaapi: Convert to use hw_frames_ctx only 2016-08-30 22:16:01 +01:00
avconv_vda.c avconv: vda: Unlock the pixel buffer once it is accessed 2015-07-09 00:10:13 +02:00
avconv_vdpau.c avconv_vdpau: use the hwcontext device creation API 2016-05-26 15:40:34 +02:00
avplay.c avplay: Correct function pointer assignments in options array 2016-11-08 17:20:30 +01:00
avprobe.c avprobe: Allow specifying multiple stream entries to be shown 2016-12-07 14:35:08 -05:00
cmdutils.c avconv: switch to the new BSF API 2016-03-20 08:15:01 +01:00
cmdutils.h avconv: use read_file() for reading the 2pass stats 2015-07-19 09:37:11 +02:00
cmdutils_common_opts.h
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common.mak build: Rename host_libs/HOSTLIBS variables to host_extralibs/HOSTEXTRALIBS 2016-12-09 18:51:23 +01:00
configure vp9: split superframes in the filtering stage before actual decoding 2016-12-14 09:06:45 +01:00
library.mak build: Drop support for configuring library name suffixes 2016-12-03 09:15:01 +01:00
version.sh build: remove hardcoded name of version header 2016-09-15 21:59:15 +02:00

README.md

Libav

Build Status

Libav 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.
  • libavresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • avconv is a command line toolbox to manipulate, convert and stream multimedia content.
  • avplay is a minimalistic multimedia player.
  • avprobe is a simple analisys 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

Conding examples are available in the doc/example directory.

License

Libav codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.