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Marth64 0912407b9d avformat/dvdvideodec: discard duplicate or partial AC3 samples 
Some DVD muxers signal segments to start with duplicate audio samples
when starting extraction from a chapter marker or terminate seamless PGs
on partial audio samples (causing corrupt AC3 frames). Clean up after
these muxers by tracking frames with duplicate PTS and eliminating
partial AC3 frames.

This results in smoother chapter extraction and overall seeking experience,
with linear PTS and AC3 delay within 32ms (1 frame) away from the video.

The issue was not apparent until the flushing pattern was replaced with
a full subdemux reset, as the flushing dropped the frames prematurely,
along side others, as such they were never present to begin with.
2024-11-16 14:40:51 -06:00
compat
doc avformat/dvdvideodec: remove auto value for menu_lu option 2024-11-16 14:40:51 -06:00
ffbuild
fftools fftools/ffplay: fix crash when vk renderer is null 2024-11-06 16:34:02 +08:00
libavcodec lavc/h264dsp: move RISC-V fn pointers to .data.rel.ro 2024-11-16 16:04:24 +02:00
libavdevice
libavfilter avfilter/f_loop: fix aloop activate logic 2024-11-11 21:56:34 +01:00
libavformat avformat/dvdvideodec: discard duplicate or partial AC3 samples 2024-11-16 14:40:51 -06:00
libavutil avutil/rational: never return greater num/den than the maximum allowed in av_d2q 2024-11-16 20:58:49 +01:00
libpostproc
libswresample
libswscale x86/swscale: disable AVX2 yuv2nv12cX functions if accurate_rnd is requested 2024-11-07 11:16:42 -03:00
presets
tests checkasm/diracdsp: test add_dirac_obmc 2024-11-15 13:44:53 -05:00
tools enc_recon_frame_test: don't print an error on EOF. 2024-11-13 09:26:22 -05:00
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Changelog lavc: deprecate the omx encoders 2024-11-09 02:46:17 +01:00
configure configure: add rv60 decoder golomb dependency 2024-11-16 19:08:39 +11:00
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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.