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Andreas Rheinhardt 2cf1eefae5 avformat/apngdec: Return error for incomplete header 
If avio_read() could read anything, it returns the number of bytes read,
even if it could not read as much as the caller desired.
apng_read_header() only checked the return value of its avio_read() calls
for being negative and this meant that it was possible for an incomplete
header to not be detected. The return value of the last successfull call
has been returned instead. This commit changes this.

Fixes: OOM
Fixes: 26608/clusterfuzz-testcase-minimized-ffmpeg_dem_APNG_fuzzer-4839491644424192

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-11-03 14:27:25 +01:00
compat compat/cuda/ptx2c: remove shell loop; fix BSD sed compat 2020-06-01 22:10:41 -05:00
doc avfitler/af_asoftclip: add hard type 2020-11-03 12:30:19 +01:00
ffbuild ffbuild: Refine MIPS handling 2020-07-23 16:30:02 +02:00
fftools fftools/ffmpeg: fix the wrong bitrate and speed stats 2020-10-31 09:49:10 +08:00
libavcodec avcodec/utils: add adpcm_ima_alp to av_get_exact_bits_per_sample() 2020-11-03 12:25:01 +10:00
libavdevice avdevice/alldevices: stop using deprecated linked list API 2020-10-19 11:54:45 -03:00
libavfilter avfilter/af_asoftclip: add asserts in default switch cases 2020-11-03 12:30:19 +01:00
libavformat avformat/apngdec: Return error for incomplete header 2020-11-03 14:27:25 +01:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/mathematics: Use av_sat_add64() for the last addition in av_add_stable() 2020-10-25 09:49:21 +01:00
libpostproc Bump minor versions after branching 4.3 2020-06-08 22:49:04 +02:00
libswresample swresample/audioconvert: Fix left shift of negative value 2020-09-30 10:50:45 +02:00
libswscale swscale/x86/yuv2rgb: fix crashes when loading alpha from unaligned buffers 2020-11-02 00:31:34 +01:00
presets
tests fate: Add test for Musepack SV8 decoding 2020-10-31 12:44:16 +01:00
tools tools/target_dec_fuzzer: adjust threshold for wmalossless 2020-10-25 09:49:56 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore tools/python: add script to convert TensorFlow model (.pb) to native model (.model) 2019-07-01 10:23:47 -03:00
.mailmap mailmap: add entry for myself 2020-07-13 11:24:04 +08:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog avcodec: add av1 VAAPI decoder 2020-11-02 22:57:23 +00:00
configure avcodec: add av1 VAAPI decoder 2020-11-02 22:57:23 +00:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: remove my public key fingerprint 2020-09-20 15:08:18 -08:00
Makefile Add support for building fuzzer tools for an individual demuxer 2020-10-12 21:01:48 +02:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: We are after the 4.3 branch point, update for that 2020-06-10 00:20:24 +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 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.