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Rostislav Pehlivanov b6cc8ec7ec aaccoder: add frequency scaling and quantization correction for PNS

This commit once again improves the PNS implementation by scaling the
thresholds with frequency. The thresholds get looser as the frequency
increases since higher frequencies are basically noise to human ears.

Also, this introduces quantization error correction for PNS. Should
the error be too much, no PNS will be used. The energy_ratio is used
to regulate the actual encoded PNS energy: if the generated PNS
energy is higher than the energy from the psy system, energy_ratio
is used to correct it so that hopefully once requantized and
transmitted the value in the decoder will be closer to what the
encoder has.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

2015-09-07 12:44:09 +01:00

compat

use a wrapper script to call MS link.exe to avoid mixing with /usr/bin/link.exe

2015-07-24 20:02:32 +02:00

doc

Update md5 muxer docs to indicate that it ignores timestamps.

2015-09-06 15:07:19 -04:00

libavcodec

aaccoder: add frequency scaling and quantization correction for PNS

2015-09-07 12:44:09 +01:00

libavdevice

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

2015-09-05 21:35:46 +02:00

libavfilter

avfilter/vf_stereo3d: stop dumping half of data for interleave rows output

2015-09-06 11:49:03 +00:00

libavformat

avformat/async: fix integer conversion warning

2015-09-07 13:15:44 +02:00

libavresample

Merge commit '9a003fc38833b6b9f08e44d7f1c6539db65840a0'

2015-09-07 12:26:13 +02:00

libavutil

Merge commit 'a686e58165ca0f83966431a9166cb6e17bf6095c'

2015-09-07 12:28:25 +02:00

libpostproc

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

2015-09-05 21:35:46 +02:00

libswresample

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

2015-09-05 21:35:46 +02:00

libswscale

Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249'

2015-09-05 21:35:46 +02:00

presets

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tests

aaccoder: add frequency scaling and quantization correction for PNS

2015-09-07 12:44:09 +01:00

tools

Merge commit '87e5d8d78cf08b54b4a9e7cbaeff89f8c1d91b78'

2015-09-07 12:27:21 +02:00

.gitattributes

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.gitignore

doc/examples: rename avio_list_dir -> avio_dir_cmd

2015-08-16 02:16:47 +02:00

.travis.yml

Merge commit '6bcd3e05998b41fb3b2c8dcc79e4662854e5208d'

2015-09-07 12:24:51 +02:00

arch.mak

use mmi instead of loongson3 as simd-optimization flag

2015-07-07 03:46:57 +02:00

Changelog

Changelog: add 2.8

2015-09-06 15:59:40 +02:00

cmdutils_common_opts.h

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cmdutils_opencl.c

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cmdutils.c

ffmpeg: replace deprecated av_log_ask_for_sample with av_log

2015-08-12 00:14:13 +02:00

cmdutils.h

cmdutils: remove sws_opts usage, simplify code

2015-08-08 16:51:25 +02:00

common.mak

Merge commit '3ae0e721c7b6e0483801b9039b3d140e3b68b7f5'

2015-07-22 16:30:37 +02:00

configure

Merge commit '0c7707610f46a28b65eff935500c78c9781f8f4f'

2015-09-07 12:53:00 +02:00

COPYING.GPLv2

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COPYING.GPLv3

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COPYING.LGPLv2.1

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COPYING.LGPLv3

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CREDITS

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ffmpeg_dxva2.c

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ffmpeg_filter.c

lavfi: fix compilation with FF_API_OLD_FILTER_OPTS=0.

2015-08-18 22:22:49 -04:00

ffmpeg_opt.c

ffmpeg: Improve help text for -target.

2015-09-02 14:32:06 +02:00

ffmpeg_vdpau.c

ffmpeg_vdpau: Ignore decoder's max supported level

2015-08-16 15:02:33 -07:00

ffmpeg_videotoolbox.c

avcodec: add new Videotoolbox hwaccel.

2015-08-03 10:12:10 +02:00

ffmpeg.c

Remove left-over FF_API_DESTRUCT_PACKET cruft

2015-09-05 16:51:53 +02:00

ffmpeg.h

ffmpeg: switch swscale option handling to AVDictionary similar to what the other subsystems use

2015-08-08 14:44:15 +02:00

ffplay.c

Remove left-over FF_API_AVFILTERBUFFER cruft

2015-09-05 16:27:19 +02:00

ffprobe.c

ffprobe: check av_asprintf() for failure

2015-06-13 01:45:27 +02:00

ffserver_config.c

ffserver: use -b instead of -ab for setting audio bitrate.

2015-08-28 14:59:58 -04:00

ffserver_config.h

ffserver: Use singlejpeg muxer for jpeg

2015-06-08 03:36:22 +02:00

ffserver.c

ffserver: cast PID to int64_t before printing

2015-08-21 15:47:54 +02:00

INSTALL.md

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library.mak

build: add LDLIBFLAGS

2015-07-08 14:35:02 +02:00

LICENSE.md

avfilter/vf_removegrain: add x86 and x86_64 SSE2 functions

2015-07-14 23:50:50 +00:00

MAINTAINERS

MAINTAINERS: add myself as an AAC encoder maintainer

2015-08-21 19:44:15 +01:00

Makefile

avcodec: add new Videotoolbox hwaccel.

2015-08-03 10:12:10 +02:00

README.md

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RELEASE

RELEASE: update to 2.7.git

2015-07-19 17:52:31 -03:00

version.sh

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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.

Languages

C 90.6%

Assembly 7.5%

Makefile 1.3%

C++ 0.2%

Objective-C 0.1%

Other 0.1%