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Andreas Rheinhardt 19a6b51fe6 avformat/cafenc: Don't segfault upon allocation error 
If an array for the packet sizes could not be successfully reallocated
when writing a packet, the CAF muxer frees said array, but does not
reset the number of valid bytes. As a result, when the trailer is
written later, avio_write tries to read that many bytes from NULL,
which segfaults.

Fix this by not freeing the array in case of error; also, postpone
writing the packet data after having successfully (re)allocated the
array, so that even on allocation error the file can be correctly
finalized.

Also remove an unnecessary resetting of the number of size entries
used at the end.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 		2021-09-27 07:08:58 +02:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc avfilter/vf_blend: add softdifference blend mode 2021-09-26 23:34:47 +02:00
ffbuild avfilter: compress CUDA PTX code if possible 2021-06-22 14:05:44 +02:00
fftools ffmpeg_filter: don't try to autorotate frames with hwaccel pixel formats 2021-09-21 10:41:16 -03:00
libavcodec avcodec/apedec: Fix integer overflow in filter_fast_3320() 2021-09-26 17:22:42 +02:00
libavdevice libavdevice/avfoundation.m: fix potential unreleased lock issue 2021-09-17 15:31:40 +02:00
libavfilter avfilter/audio, video: Remove references to avfilter_unref_buffer() 2021-09-27 06:10:57 +02:00
libavformat avformat/cafenc: Don't segfault upon allocation error 2021-09-27 07:08:58 +02:00
libavutil avutil/tests/opt: Set AVClass.version 2021-09-27 05:51:44 +02:00
libpostproc postproc/postprocess: Remove legacy cruft 2021-07-29 22:02:06 +02:00
libswresample swresample/aarch64: fix relocation out of range error 2021-09-25 21:55:29 +03:00
libswscale swscale: add input/output support for X2BGR10LE 2021-09-26 16:26:10 +02:00
presets
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tests fate/caf: Add remux tests 2021-09-27 07:08:53 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for WMV2 2021-09-26 17:22:22 +02:00
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.gitignore avfilter: compress CUDA PTX code if possible 2021-06-22 14:05:44 +02:00
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CONTRIBUTING.md
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COPYING.GPLv2
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CREDITS
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Changelog avfilter: add audio psychoacoustic clipper 2021-09-11 16:19:40 +02:00
INSTALL.md
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LICENSE.md
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MAINTAINERS avformat: add Argonaut Games CVG demuxer 2021-05-12 20:25:50 +10:00
Makefile FATE: add a test for sliced scaling 2021-08-08 19:26:05 +02:00
README.md
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RELEASE Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00
configure configure: arm: Don't add -march= to the compiler if no preference was passed 2021-09-21 14:04:28 +03:00

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.