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Ganesh Ajjanagadde d59bfcd112 avformat/mov: fix integer overflow 
Partially fixes Ticket 4727.

-duration is not a safe expression, since duration can be INT_MIN.
One might ask how it can become INT_MIN.
Although it is true that line 2574 is no longer reached with INT_MIN due
to commit 053e80f6ea (which fixed another
integer overflow issue), mov_update_dts_shift is called on line 3549 as
well, right after a read of untrusted data.
One can do the fix locally there, but that function is already a huge
mess. Changing mov_update_dts_shift is likely better.

This changes duration to INT_MIN + 1 in such cases. This should not make any
practical difference since such streams are anyway fuzzer files.

Tested with FATE.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
2015-10-13 19:41:07 -04:00
compat
doc
libavcodec x86/vp9itxfm: fix register clobbering in ff_vp9_idct_idct_4x4_add_12_sse2 2015-10-13 20:21:33 -03:00
libavdevice
libavfilter avfilter/af_sidechaincompress: replace FFABS with fabs 2015-10-13 09:37:18 +02:00
libavformat avformat/mov: fix integer overflow 2015-10-13 19:41:07 -04:00
libavresample
libavutil avutil/fifo: Fix thread saftey of av_fifo_generic_peek() 2015-10-13 19:08:42 +02:00
libpostproc
libswresample
libswscale swscale: fix ticket #4881 2015-10-13 13:43:39 -03:00
presets
tests vp9: add itxfm_add eob shortcuts to 10/12bpp functions. 2015-10-13 11:06:01 -04:00
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ffmpeg_vdpau.c
ffmpeg_videotoolbox.c
ffmpeg.c
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ffserver_config.c ffserver_config: check for INT_MIN before doing FFABS 2015-10-13 19:40:09 -04:00
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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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • 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. Few developers follow pull requests so they will likely be ignored.