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Cameron Gutman 30322ebe3c avcodec/v4l2_m2m_dec: dequeue frame if input isn't ready 
The V4L2M2M API operates asynchronously, so multiple packets can
be enqueued before getting a batch of frames back. Since it was
only possible to receive a frame by submitting another packet,
there wasn't a way to drain those excess output frames from when
avcodec_receive_frame() returned AVERROR(EAGAIN).

Reviewed-by: Andriy Gelman <andriy.gelman@gmail.com>
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
 		2021-12-28 18:12:47 -05:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc avcodec/libx26[45]: add udu_sei option to import user data unregistered SEIs 2021-12-28 14:19:38 +08:00
ffbuild build: simplify rules for metal 2021-12-20 12:05:39 -08:00
fftools fftools: provide media type info for devices 2021-12-24 14:06:56 +05:30
libavcodec avcodec/v4l2_m2m_dec: dequeue frame if input isn't ready 2021-12-28 18:12:47 -05:00
libavdevice avdevice/dshow: don't mix declarations and code 2021-12-24 14:24:07 -03:00
libavfilter avfilter: add anlmf filter 2021-12-25 11:32:41 +01:00
libavformat avformat/mxfenc: fix DNxHD GC element_type 2021-12-27 00:39:35 +01:00
libavutil libavutil/hwcontext_qsv: clean padding when upload qsv frames 2021-12-23 15:49:07 +08:00
libpostproc libpostproc/postprocess_template: Don't reimplement FFSWAP 2021-10-02 17:13:42 +02:00
libswresample libswresample/swresamplec: Err num(negative-size) was used as a function parameter 2021-12-09 13:12:45 +01:00
libswscale swscale/x86/init: use isSemiPlanarYUV 2021-12-23 01:41:03 -06:00
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tests avformat/mxfenc: fix DNxHD GC element_type 2021-12-27 00:39:35 +01:00
tools tools/target_dec_fuzzer: Adjust threshold for prores 2021-12-16 21:06:47 +01:00
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Changelog avfilter: add anlmf filter 2021-12-25 11:32:41 +01:00
INSTALL.md
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LICENSE.md
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MAINTAINERS MAINTAINERS: add my gpg fingerprint 2021-12-23 09:25:16 +08:00
Makefile build: add .metal to vpath to fix build error 2021-12-20 12:05:07 -08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE
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configure configure: use pkg-config for sndio 2021-12-23 20:19:18 +01:00

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.