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FFmpeg git repo
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Jean Delvare 8bc708fcee avfilter/delogo: Set default band to 1 
The original interpolation algorithm behaved poorly on the borders and
did not even guarantee continuity at the borders. For this reason, a
second interpolation/blending pass was required on the borders to make
them seamless.

However, since the interpolation algorithm was improved in June 2013,
the border issues no longer exist. The new algorithm does guarantee
continuity at the borders, making the second pass useless. A larger
band always increases the cumulated interpolation error. In most cases
it also increases the average interpolation error, even though the
samples in the band are only partially interpolated.

For this reason I would like to get rid of the "band" parameter. As a
first step, let's change its default value from 4 to 1 and document it
as deprecated.

I have benchmarked this change on a combination of input sources and
realistic logo areas. Lowering the band value from 4 to 1 resulted in
8 to 39 % less interpolation error per frame (or 1 to 34 % less
interpolation error per luma sample.)

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
2015-10-08 11:27:57 +02:00
compat
doc avfilter/delogo: Set default band to 1 2015-10-08 11:27:57 +02:00
libavcodec dnxhdenc: mark CID 1260 encoder experimental 2015-10-08 00:22:06 +02:00
libavdevice
libavfilter avfilter/delogo: Set default band to 1 2015-10-08 11:27:57 +02:00
libavformat avformat/flvdec: Print stream type in case a new stream is discovered after the header 2015-10-07 02:41:40 +02:00
libavresample
libavutil avutil/attributes: add av_warn_unused_result 2015-10-05 19:30:20 +02:00
libpostproc
libswresample swresample/resample: manually unroll the main loop in bessel() 2015-10-07 18:00:58 +02:00
libswscale all: add _DEFAULT_SOURCE locally wherever needed 2015-10-04 12:15:16 -04:00
presets
tests checkasm: add alacdsp tests 2015-10-06 20:25:49 -03:00
tools
.gitattributes
.gitignore
.travis.yml
arch.mak
Changelog avfilter: add displace video filter 2015-10-04 21:44:57 +02:00
cmdutils_common_opts.h
cmdutils_opencl.c
cmdutils.c cmdutils: silence unused warnings under --disable-swscale, --disable-swresample 2015-10-03 19:26:09 +02:00
cmdutils.h
common.mak
configure configure: Add version check for libkvazaar 2015-10-07 17:03:51 +03:00
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CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c
ffmpeg_opt.c
ffmpeg_vdpau.c
ffmpeg_videotoolbox.c
ffmpeg.c
ffmpeg.h
ffplay.c ffplay: use correct context for av_log 2015-10-05 22:28:17 +02:00
ffprobe.c
ffserver_config.c ffserver: fix line wrapping on function decls 2015-10-04 15:58:35 -07:00
ffserver_config.h
ffserver.c ffserver: avoid leaking pathname at exit 2015-10-04 22:31:22 -07:00
INSTALL.md
library.mak
LICENSE.md
MAINTAINERS
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README.md README: replace http with https 2015-10-06 13:27:29 +02:00
RELEASE
version.sh

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. Few developers follow pull requests so they will likely be ignored.