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Andreas Rheinhardt 6fa967810d tests/checkasm/svq1enc: Use proper range for input 
ssd_int8_vs_int16 is only called from encode_block()
in svq1enc.c; it calls it in stages: At stage 0,
the int16_t array contains the difference of two
uint16_t. At each of the following stages, the
int16_t array is filled by subtracting an int8_t from
the current stage's int16_t array. The maximum stage
is five, so the int16_t are in the range
(-255 - 5 * 127)..(255 + 5 * 128).

This commit modifies the checkasm test to only use
values from this range, fixing (undefined) integer overflow
in the test.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-05-09 13:40:18 +02:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc avfilter/f_select.c: add support for iw and ih variables 2024-05-08 21:33:32 +02:00
ffbuild ffbuild/libversion.sh: add shebang 2024-04-09 15:34:53 +02:00
fftools fftools/ffprobe: Avoid overflow when calculating DAR 2024-05-05 11:56:29 +01:00
libavcodec avcodec/evc: Reference to ISO_IEC_23094-1-2020 document section for EVC_MAX_APS_COUNT enum has been fixed 2024-05-08 21:15:05 -03:00
libavdevice lavd/v4l2: Use proper field type for second parameter of ioctl() with BSD's 2024-05-08 21:33:32 +02:00
libavfilter avfilter/af_volume: Don't free options manually 2024-05-09 13:18:32 +02:00
libavformat avformat/avi: Added EVC codec tag to the list of supported codec_id-codec_tag pairs for AVI muxer 2024-05-08 21:15:05 -03:00
libavutil lavu/riscv: fix build without <sys/hwprobe.h> 2024-05-08 18:26:32 +03:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswscale swscale/output: Fix integer overflow in yuv2rgba64_full_1_c_template() 2024-05-06 03:00:40 +02:00
presets
tests tests/checkasm/svq1enc: Use proper range for input 2024-05-09 13:40:18 +02:00
tools tools: add target_enc_fuzzer.c 2024-04-24 02:52:16 +02:00
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Changelog lavc/qsvenc: add support for oneVPL string API 2024-05-07 11:06:37 +08:00
configure configure: Add missing identity filter->scene_sad dependency 2024-05-07 23:53:26 +02:00
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MAINTAINERS MAINTAINERS: add myself as dvdvideo demuxer, rcwt muxer maintainer 2024-03-10 15:21:23 +01:00
Makefile tools: add target_enc_fuzzer.c 2024-04-24 02:52:16 +02:00
README.md
RELEASE RELEASE: update after 7.0 branch 2024-04-02 13:02:39 -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 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.