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Andreas Rheinhardt 8b5d155301 avformat/hevc: Fix crash on allocation failure, avoid allocations 
The HEVC code currently uses an array of arrays of NALUs; one such array
contains all the SPS NALUs, one all PPS NALUs etc. The array of arrays
is grown dynamically via av_reallocp_array(), but given that the latter
function automatically frees its buffer upon reallocation error,
it may only be used with PODs, which this case is not. Even worse:
While the pointer to the arrays is reset, the counter for the number
of arrays is not, leading to a segfault in hvcc_close().

Fix this by avoiding the allocations of the array of arrays altogether.
This is easily possible because their number is bounded (by five).
Furthermore, as a byproduct we can ensure that the code always
produces the recommended ordering of VPS-SPS-PPS-SEI (which was
not guaranteed before).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-09-02 11:40:45 +02:00
compat compat: add msvc windres wrapper 2022-08-13 14:42:52 +02:00
doc doc/git-howto.texi: Document commit signing 2022-08-28 22:06:45 +02:00
ffbuild
fftools fftools/ffmpeg_opt: Check creation of new program 2022-09-01 14:26:01 +02:00
libavcodec avcodec/bink: disallow odd positioned scaled blocks 2022-09-02 10:44:28 +02:00
libavdevice configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libavfilter avfilter/af_silenceremove: do not trim non-silence from start 2022-08-23 22:18:02 +02:00
libavformat avformat/hevc: Fix crash on allocation failure, avoid allocations 2022-09-02 11:40:45 +02:00
libavutil lavc/vaapi: Switch preferred 8bit 444 format to VUYX 2022-08-25 19:04:10 -07:00
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample lswr: take const AVChannelLayout* in swr_alloc_set_opts2() 2022-08-24 18:31:05 -05:00
libswscale libswscale: add support for VUYX format 2022-08-25 19:03:49 -07:00
presets
tests libswscale: add support for VUYX format 2022-08-25 19:03:49 -07:00
tools tools/target_dec_fuzzer: Adjust threshold for MVDV 2022-08-28 22:06:45 +02:00
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Changelog lavc/vaapi_encode: enable 8bit 4:4:4 encoding for HEVC and VP9 2022-08-09 09:22:49 -07:00
configure configure: enable the av1_frame_split bsf for the av1 decoder 2022-08-23 14:30:28 +02:00
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MAINTAINERS MAINTAINERS: Add ED25519 key for signing my commits in the future 2022-08-09 21:57:31 +02:00
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RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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 means to alter decoded audio and video through a directed graph of connected 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.