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FFmpeg git repo
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Jan Ekström 453b2f3c15 ffmpeg: add a data size threshold for muxing queue size 
This way the old max queue size limit based behavior for streams
where each individual packet is large is kept, while for smaller
streams more packets can be buffered (current default is at 50
megabytes per stream).

For some explanation, by default ffmpeg copies packets from before
the appointed seek point/start time and puts them into the local
muxing queue. Before, it getting utilized was much less likely
since as soon as the filter chain was initialized, the encoder
(and thus output stream) was also initialized.

Now, since we will be pushing the encoder initialization to when the
first AVFrame is decoded and filtered - which only happens after
the exact seek point is hit as packets are ignored until then -
this queue will be seeing much more usage.

In more layman's terms, this attempts to fix cases such as where:
- seek point ends up being 5 seconds before requested time.
- audio is set to copy, and thus immediately begins filling the
  muxing queue.
- video is being encoded, and thus all received packets are skipped
  until the requested time is hit.
2020-10-29 16:59:48 +02:00
compat
doc ffmpeg: add a data size threshold for muxing queue size 2020-10-29 16:59:48 +02:00
ffbuild
fftools ffmpeg: add a data size threshold for muxing queue size 2020-10-29 16:59:48 +02:00
libavcodec avcodec/vp3: Don't check for errors for complete VLC 2020-10-29 11:22:35 +01:00
libavdevice avdevice/alldevices: stop using deprecated linked list API 2020-10-19 11:54:45 -03:00
libavfilter avfilter/vf_normalize: fix regression with white/black point calculation 2020-10-27 19:45:51 +01:00
libavformat lavf/url: fix relative url parsing when the query string or fragment has a colon 2020-10-28 21:34:09 +01:00
libavresample
libavutil avutil/mathematics: Use av_sat_add64() for the last addition in av_add_stable() 2020-10-25 09:49:21 +01:00
libpostproc
libswresample swresample/audioconvert: Fix left shift of negative value 2020-09-30 10:50:45 +02:00
libswscale swscale/utils: override forced-zero formats back to full range 2020-10-11 12:58:13 +03:00
presets
tests lavf/url: fix relative url parsing when the query string or fragment has a colon 2020-10-28 21:34:09 +01:00
tools tools/target_dec_fuzzer: adjust threshold for wmalossless 2020-10-25 09:49:56 +01:00
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.travis.yml
Changelog avformat: add alp muxer 2020-10-25 23:44:26 +10:00
configure configure: check for nvdec/cuvid AV1 support 2020-10-15 23:25:05 +02:00
CONTRIBUTING.md
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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
RELEASE

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.