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Andriy Gelman 9383885c0d avformat/aviobuf: don't reduce short seek threshold 
Commit 8c8e5d5286 added a way to reduce
seek time by waiting for the windowed tcp packets instead of creating a
new socket connection. It implemented this by overwriting
s->short_seek_threshold in avio_seek(). However,
s->short_seek_threshold could already be set and be higher than the
threshold set by the protocol (i.e. s->short_seek_threshold is set in
ff_configure_buffers_for_index()).

This new feature was only enabled for tls connections in
70d8077b79. As in Ticket #9148 it reduced
performance because instead of waiting to refill the AVIOContext buffers
with an existing connections, a new HTTP request was often made instead.

Fixes Ticket #9148.

Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
2021-03-16 22:46:25 -04:00
compat compat/cuda: correct ushort4 to use ushort 2021-02-22 17:03:52 +01:00
doc lavc: rename AV_CODEC_CAP_AUTO_THREADS->AV_CODEC_CAP_OTHER_THREADS 2021-03-16 10:38:41 +01:00
ffbuild
fftools cmdutils: replace strncpy() with direct assignment 2021-03-16 10:41:01 +01:00
libavcodec lavc: drop unused argument from lock_avcodec() 2021-03-16 11:09:58 +01:00
libavdevice avdevice/xcbgrab: Add option for grabbing a window 2021-03-14 18:16:18 -04:00
libavfilter avfilter/vf_xfade: drop unused frames from inactive inputs 2021-03-14 13:15:21 +01:00
libavformat avformat/aviobuf: don't reduce short seek threshold 2021-03-16 22:46:25 -04:00
libavresample
libavutil avutil/avstring: Check for memory allocation error in av_escape 2021-03-15 06:45:07 +01:00
libpostproc
libswresample
libswscale swscale/x86/swscale: Remove unused ASM constants 2021-02-24 09:47:54 +01:00
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tests lavc: remove tests/options 2021-03-08 09:29:50 +01:00
tools tools/target_dec_fuzzer: Adjust flv1 threshold 2021-03-08 22:08:49 +01:00
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Changelog avformat: add Changelog entry for librist and bump minor 2021-03-13 17:36:48 +01:00
configure libavformat: add librist protocol 2021-03-13 17:36:48 +01:00
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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 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.