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Andreas Rheinhardt 0a06f5aca5 avcodec/wmv2dec: Zero mb_type array for I pictures 
Up until now, ff_wmv2_decode_secondary_picture_header() only
set the mb_type array for non I-pictures, so that the decoding
process uses the earlier values of this array; this affects
the output of the wmv8-x8intra FATE-test (which this patch
therefore updates). These earlier values were set when decoding
earlier frames or when the buffer was initially zero-allocated.
A consequence of this is that the output of this test would be
random if ff_find_unused_picture() would select the unused picture
to return at random. Furthermore decoding from a keyframe onwards
depends upon the earlier state of the decoder.

This patch therefore zeroes said array when decoding an I picture.

(It is not claimed that zero is the right value to fill the array with.
I just don't know.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-08-10 18:49:35 +02:00
compat avfilter: add chromakey_cuda filter 2022-07-10 17:20:15 +02:00
doc doc/filters: clarify behaviour of weights in amix 2022-08-09 13:59:29 +05:30
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools fftools/ffmpeg: move handling corrupt packets to the input thread 2022-08-08 16:20:58 +02:00
libavcodec avcodec/wmv2dec: Zero mb_type array for I pictures 2022-08-10 18:49:35 +02:00
libavdevice avdevice/v4l2: fix leak of timefilter 2022-08-03 17:52:25 +08:00
libavfilter avfilter/framesync: add a new option to set how to sync streams based on secondary input timestamps 2022-08-10 09:15:37 -03:00
libavformat avformat/mov: Rework the AVIF parser to handle multiple items 2022-08-09 13:15:55 -07:00
libavutil x86/tx_float: save a branch during coefficient deinterleaving 2022-08-09 03:35:12 +02:00
libpostproc Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libswresample Bump versions after 5.1 branch 2022-07-13 00:29:05 +02:00
libswscale swscale/output: fix reading chroma values when generating vuya output 2022-08-08 09:39:33 -03:00
presets
tests avcodec/wmv2dec: Zero mb_type array for I pictures 2022-08-10 18:49:35 +02:00
tools tools/target_dec_fuzzer: set avctx->workaround_bugs flags 2022-07-26 09:15:16 -03:00
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.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
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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 avcodec/flacdsp: Split encoder-only parts into a ctx of its own 2022-08-05 03:28:45 +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
Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
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.