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Mark Thompson 8a442d7a8a pixdesc: Improve scoring for opaque/unknown pixel formats 
Hardware pixel formats do not tell you anything about their actual
contents, but should still score higher than formats with completely
unknown properties, which in turn should score higher than invalid
formats.

Do not return an AVERROR code as a score.

Fixes a hang in libavfilter where format negotiation gets stuck in a
loop because AV_PIX_FMT_NONE scores more highly than all other
possibilities.
2017-07-18 22:56:30 +01:00
compat compat/cuda: make cuvidGetDecoderCaps optional 2017-06-01 12:39:06 +02:00
doc avdevice/decklink_dec: add support for receiving op47 teletext 2017-07-18 18:28:57 +02:00
ffbuild build: Allow generating dependencies as a side-effect of assembling 2017-06-21 17:00:29 -03:00
libavcodec lavc/vaapi_encode_h265: Remove duplicate slice_segment_address. 2017-07-18 22:56:24 +01:00
libavdevice avdevice/decklink_dec: add support for receiving op47 teletext 2017-07-18 18:28:57 +02:00
libavfilter avfilter: add LIBVMAF filter 2017-07-16 08:21:32 -04:00
libavformat webmdashenc: Fix memory leak 2017-07-16 16:09:17 +01:00
libavresample build: Generalize yasm/nasm-related variable names 2017-06-21 17:00:29 -03:00
libavutil pixdesc: Improve scoring for opaque/unknown pixel formats 2017-07-18 22:56:30 +01:00
libpostproc Merge commit '92db5083077a8b0f8e1050507671b456fd155125' 2017-05-04 19:59:30 -03:00
libswresample libswresample: check input to swr_convert_frame for NULL 2017-07-08 18:13:43 +02:00
libswscale build: Generalize yasm/nasm-related variable names 2017-06-21 17:00:29 -03:00
presets
tests fate: add sub-srt-badsyntax test 2017-07-15 04:16:44 +02:00
tools build: Generalize yasm/nasm-related variable names 2017-06-21 17:00:29 -03:00
.gitattributes
.gitignore build: add support for building .cu files via nvcc 2017-05-15 11:46:50 +02:00
.travis.yml build: Prefer NASM assembler over YASM 2017-06-21 17:00:30 -03:00
Changelog avfilter: add LIBVMAF filter 2017-07-16 08:21:32 -04:00
cmdutils_opencl.c cmdutils_opencl: Fix read of uinitialized cl_mem 2017-05-11 13:02:12 +02:00
cmdutils.c avformat, ffmpeg: deprecate old rotation API 2017-03-27 13:20:27 +02:00
cmdutils.h Merge commit '122de16dd8108a59a55d30543c9f28b5f61b02d1' 2017-05-05 14:04:30 +02:00
configure configure: Fix libvmaf name 2017-07-16 16:12:25 +01:00
CONTRIBUTING.md
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CREDITS
ffmpeg_cuvid.c
ffmpeg_filter.c ffmpeg: Support setting the hardware device to use when filtering 2017-06-14 22:27:07 +01:00
ffmpeg_hw.c avconv_hw: Free device on initialisation failure 2017-06-18 17:07:25 +01:00
ffmpeg_opt.c ffmpeg: reindent after previous commit 2017-07-18 10:39:38 +02:00
ffmpeg_qsv.c
ffmpeg_videotoolbox.c ffmpeg_videotoolbox: fix usage of av_get_codec_tag_string() 2017-03-29 14:49:29 +02:00
ffmpeg.c ffmpeg: Fix typos in the comment for decode() ("." vs. "->") 2017-07-07 03:48:56 +02:00
ffmpeg.h dxva: add support for new dxva2 and d3d11 hwaccel APIs 2017-06-27 18:05:02 +02:00
ffplay.c ffplay: reindent after previous commit 2017-07-18 10:39:43 +02:00
ffprobe.c ffprobe: reindent after previous commit 2017-07-18 10:39:46 +02:00
ffserver_config.c
ffserver_config.h
ffserver.c Merge commit '122de16dd8108a59a55d30543c9f28b5f61b02d1' 2017-05-05 14:04:30 +02:00
INSTALL.md
LICENSE.md Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: Add Manojkumar Bhosale for MIPS, remove myself. 2017-06-08 01:25:15 +02:00
Makefile dxva: add support for new dxva2 and d3d11 hwaccel APIs 2017-06-27 18:05:02 +02:00
README.md
RELEASE Bump minor versions for master after release/3.3 branchpoint 2017-03-31 13:21:06 +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 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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • 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.