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Andreas Rheinhardt a162e78cd5 avcodec/fraps: Use cached bitstream reader 
This proved beneficial for performance: For the sample [1] the number
of decicycles in one decode call decreased from 155851561 to 108158037
for Clang 10 and from 168270467 to 128847479 for GCC 9.3. For x86-32
compiled with GCC 9.3 and run on an x64 Haswell the number increased
from 158405517 to 202215769, so that the cached bitstream reader is only
enabled if HAVE_FAST_64BIT is set. These values are the average of 10
runs each looping five times over the input.

[1]: samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2593/fraps_flv1_decoding_errors.avi

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2020-09-26 21:10:45 +02:00
compat
compat/cuda/ptx2c: remove shell loop; fix BSD sed compat
2020-06-01 22:10:41 -05:00
doc
avdevice/decklink_dec: add support for querying RP188 High Frame Rate timecode
2020-09-13 18:06:54 +02:00
ffbuild
ffbuild: Refine MIPS handling
2020-07-23 16:30:02 +02:00
fftools
fftools/ffprobe: use av_timecode_make_smpte_tc_string2
2020-09-13 17:51:57 +02:00
libavcodec
avcodec/fraps: Use cached bitstream reader
2020-09-26 21:10:45 +02:00
libavdevice
avdevice/lavfi: av_malloc -> av_malloc_array
2020-09-21 09:30:55 +08:00
libavfilter
dnn: add a new interface DNNModel.get_output
2020-09-21 21:26:56 +08:00
libavformat
avformat/http: fix memleak
2020-09-25 10:21:28 +02:00
libavresample
avresample: remove deprecated attribute from the AVAudioResampleContext struct
2018-01-09 10:56:53 -03:00
libavutil
avutil/pixfmt: improve definition of AVColorRange
2020-09-23 19:14:45 +03:00
libpostproc
Bump minor versions after branching 4.3
2020-06-08 22:49:04 +02:00
libswresample
swresample/rematrix: handle 22.2 as a 9 channel layout
2020-08-18 22:47:35 +03:00
libswscale
swscale/x86/output: add missing AVX2 support preprocessor wrappers
2020-08-20 15:14:56 -03:00
presets
…
tests
avformat/movenc: use more fall-back values for average bit rate fields
2020-09-22 18:25:44 +03:00
tools
tools/target_dec_fuzzer: Adjust VQA threshold
2020-09-19 00:40:56 +02:00
.gitattributes
fate: add SCC test
2017-01-27 17:06:42 +01:00
.gitignore
tools/python: add script to convert TensorFlow model (.pb) to native model (.model)
2019-07-01 10:23:47 -03:00
.mailmap
mailmap: add entry for myself
2020-07-13 11:24:04 +08:00
.travis.yml
Merge commit '899ee03088d55152a48830df0899887f055da1de'
2019-03-14 15:53:16 -03:00
Changelog
lavc/qsvdec: Add QSV AV1 decoder
2020-09-26 23:42:39 +08:00
configure
lavc/qsvdec: Add QSV AV1 decoder
2020-09-26 23:42:39 +08:00
CONTRIBUTING.md
Add CONTRIBUTING.md
2016-09-18 10:02:13 +01:00
COPYING.GPLv2
…
COPYING.GPLv3
…
COPYING.LGPLv2.1
…
COPYING.LGPLv3
…
CREDITS
…
INSTALL.md
INSTALL.md: Fix Markdown formatting
2019-01-31 10:29:16 -09:00
LICENSE.md
avfilter/vf_geq: Relicense to LGPL
2019-12-28 11:20:48 +01:00
MAINTAINERS
MAINTAINERS: remove my public key fingerprint
2020-09-20 15:08:18 -08:00
Makefile
tools:target_dem_fuzzer: Split into a fuzzer fuzzing at the protocol level and one fuzzing a fixed demuxer input
2020-09-13 10:40:02 +02:00
README.md
Remove the ffserver program
2018-01-06 18:31:37 +00:00
RELEASE
RELEASE: We are after the 4.3 branch point, update for that
2020-06-10 00:20:24 +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.
  • 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.

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