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wm4 816577716b avcodec/dvdsubdec: fix accessing dangling pointers 
dvdsub_decode() can call append_to_cached_buf() 2 times, the second time
with ctx->buf as argument. If the second append_to_cached_buf() reallocs
ctx->buf, the argument will be a pointer to the previous, freed block.
This can cause invalid reads at least with some fuzzed files - and
possibly with valid files.

Since packets can apparently not be larger than 64K (even if packets are
combined), just use a fixed size buffer. It will be allocated as part of
the DVDSubContext, and although some memory is "wasted", it's relatively
minimal by modern standards and should be acceptable.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-01-08 17:45:32 +01:00
compat compat/avisynth/avxsynth_c: Clear all unused fields in returned structs 2014-12-11 16:12:47 +01:00
doc Merge commit '71ec3d36fa6122b3b6c5c68a21b9c70cb2e668e8' 2015-01-08 17:13:38 +01:00
libavcodec avcodec/dvdsubdec: fix accessing dangling pointers 2015-01-08 17:45:32 +01:00
libavdevice avdevice/lavfi: Use avio_closep() to avoid leaving stale pointers in memory 2015-01-08 14:11:44 +01:00
libavfilter lavfi/boxblur: Readd 8bit colour spaces on big-endian. 2015-01-08 15:24:59 +01:00
libavformat avformat/hlsenc: Use avio_closep() to avoid leaving stale pointers in memory 2015-01-08 14:51:04 +01:00
libavresample Merge commit '963f76144897d3f7684d82ec21e51dd50ea1106e' 2014-10-18 22:53:23 +02:00
libavutil Merge commit '07a0c0f0005072d115ace61e60f46be68582cc3a' 2015-01-06 21:37:48 +01:00
libpostproc Add FFMPEG_VERSION into the binary libs 2014-12-19 19:32:40 +01:00
libswresample x86/swr: disable pack_8ch functions on msvc/icl x86_32 2014-12-31 16:38:33 -03:00
libswscale Merge commit '1dd797e3c9f179f957316a0becbec048b42df8aa' 2015-01-06 21:44:50 +01:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests tests/regression-funcs: Remove hardcoded threads 1 2015-01-03 15:09:12 +01:00
tools tools/ismindex.c: Use av_realloc_array() 2015-01-06 21:08:33 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore gitignore: add test_copy.ffmeta 2014-10-17 15:57:12 +02:00
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cmdutils_common_opts.h opts: add list device sources/sinks options 2014-10-25 20:20:31 +02:00
cmdutils_opencl.c cmdutils_opencl: Use av_malloc_array() 2014-07-01 03:49:36 +02:00
cmdutils.c cmdutils.c: Use av_realloc_array() 2015-01-06 17:52:54 +01:00
cmdutils.h opts: add list device sources/sinks options 2014-10-25 20:20:31 +02:00
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CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
ffmpeg_dxva2.c Merge commit 'a7c5fddac8137654cb503295c4dfb6492df43643' 2014-04-30 00:46:38 +02:00
ffmpeg_filter.c ffmpeg: fix accurate seeking with -copyts 2014-11-24 17:31:26 +01:00
ffmpeg_opt.c ffmpeg_opt: Use avio_closep() to avoid leaving stale pointers in memory 2015-01-08 14:10:23 +01:00
ffmpeg_vda.c Merge commit '1839fafa951308237c4672ffd9a94f927b26eac7' 2014-05-12 02:44:28 +02:00
ffmpeg_vdpau.c Merge commit '1f9237f2ac46dfbed1bfa1f4f0f1314c2a1d62ec' 2014-12-27 13:26:38 +01:00
ffmpeg.c ffmpeg: Use avio_closep() to avoid leaving stale pointers in memory 2015-01-08 14:10:58 +01:00
ffmpeg.h ffmpeg: add sdp_file option 2014-12-28 02:05:34 +01:00
ffplay.c ffplay: dump format before selecting streams 2015-01-01 14:38:12 +01:00
ffprobe.c ffprobe: Support extracting the number of reference frames 2014-12-30 17:55:20 +01:00
ffserver_config.c ffserver_config: reflow add_codec() 2014-12-09 01:03:01 -03:00
ffserver_config.h ffserver: dont leak child arguments 2014-11-26 23:32:33 +01:00
ffserver.c ffserver: Use avio_closep() to avoid leaving stale pointers in memor 2015-01-08 14:11:12 +01:00
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
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LICENSE.md lavfi: port mp=fspp to a native libavfilter filter 2014-12-24 16:29:18 +01:00
MAINTAINERS avcodec: Add NVENC encoder 2014-12-11 01:06:27 +01:00
Makefile Makefile: add dependencies which require ffversion.h 2014-12-20 04:17:03 +01:00
README.md README: fix 2 typo in the doc/examples sentence 2014-11-03 09:21:45 +01:00
RELEASE RELEASE: Bump 2014-12-04 11:44:35 +01:00
RELEASE_NOTES avformat/mov: Disable XMP metadata by default 2014-12-11 21:47:37 +01:00
version.sh version.sh: Print versions based on the last git tag for release branches 2014-07-28 15:44:59 +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 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

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.