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18 Commits

Author SHA1 Message Date
Timothy Gu
9ba54c1b82 avcodec: Remove libaacplus 
TODO: bump minor

It's inferior in quality to fdk-aac and has an arguably more problematic
license.

As early as 2012, a HydrogenAudio user reported:

> It has however one huge advantage: much better quality at low bitrates than
> faac and libaacplus.

(https://hydrogenaud.io/index.php?PHPSESSID=ckiq394pdglka0kj2fin6ij8t7&topic=95989.msg804633#msg804633)

I myself have made a few spectrograms for a comparison of the two
encoders as well. The FDK output is consistently better than the
libaacplus one, in all bitrates I tested.

libaacplus license is 3GPP + LGPLv2. 3GPP copyright notice is completely
proprietory, as follows:

> No part may be reproduced except as authorized by written permission.
>
> The copyright and the foregoing restriction extend to reproduction in
> all media.
>
> © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
>
> All rights reserved.

(The latest 26410-d00 zip from 3GPP has the same notice, but the copyright
year is changed to 2015)

The copyright part of the FDK AAC license (section 2) is a copyleft
license that permits redistribution under certain conditions (and
therefore the LGPL + libfdk-aac combination is not prohibited by
configure):

> Redistribution and use in source and binary forms, with or without
> modification, are permitted without payment of copyright license fees
> provided that you satisfy the following conditions:
>
> You must retain the complete text of this software license in
> redistributions of the FDK AAC Codec or your modifications thereto in
> source code form.
>
> You must retain the complete text of this software license in the
> documentation and/or other materials provided with redistributions of
> the FDK AAC Codec or your modifications thereto in binary form.
>
> You must make available free of charge copies of the complete source
> code of the FDK AAC Codec and your modifications thereto to recipients
> of copies in binary form.
>
> The name of Fraunhofer may not be used to endorse or promote products
> derived from this library without prior written permission.
>
> You may not charge copyright license fees for anyone to use, copy or
> distribute the FDK AAC Codec software or your modifications thereto.
>
> Your modified versions of the FDK AAC Codec must carry prominent
> notices stating that you changed the software and the date of any
> change. For modified versions of the FDK AAC Codec, the term
> "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the
> term "Third-Party Modified Version of the Fraunhofer FDK AAC Codec
> Library for Android."
 2016-01-29 17:14:37 -08:00
Paul B Mahol
2a0fc55995 avfilter: add rubberband wrapper 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2015-09-20 19:54:57 +02:00
James Darnley
bff7242608 avfilter/vf_removegrain: add x86 and x86_64 SSE2 functions 
Speed of all modes increased by a factor between 7.4 and 19.8 largely depending
on whether bytes are unpacked into words.  Modes 2, 3, and 4 have been sped-up
by a factor of 43 (thanks quick sort!)

All modes are available on x86_64 but only modes 1, 10, 11, 12, 13, 14, 19, 20,
21, and 22 are available on x86 due to the number of SIMD registers used.

With a contribution from James Almer <jamrial@gmail.com>
 2015-07-14 23:50:50 +00:00
Michael Niedermayer
eb16881199 LICENSE.md: add *_rect filters 
Found-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-05-03 01:43:30 +02:00
Robert Xiao
60bb893386 LICENSE.md: Formatting updates 
Put filenames and configuration options in code for clarity, and fix some list formatting.

Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-12 01:53:56 +01:00
Paul B Mahol
8b77c4dd42 avfilter: Add repeatfields filter (Port of mp=softpulldown) 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-10 19:07:20 +01:00
Paul B Mahol
e7e0005cc6 remove libmpcodecs 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2015-01-31 12:01:54 +00:00
Michael Niedermayer
f994000dc5 LICENSE.md: add vf_eq 
Found-by: jamrial
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-01-26 00:36:17 +01:00
Paul B Mahol
241f858cf4 LICENSE.md: mention mpdecimate and not decimate to be GPL 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2015-01-10 13:32:55 +00:00
Arwa Arif
a299cd5ab3 lavfi: port mp=pp7 to libavfilter 
The only difference with mp=pp7 is that default mode is "medium", as stated
in the MPlayer docs, rather than "hard".

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
 2015-01-09 17:26:31 +01:00
Arwa Arif
bdc4db0ee3 lavfi: port mp=fspp to a native libavfilter filter 
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
 2014-12-24 16:29:18 +01:00
Clément Bœsch
1a4128c843 LICENSE: mention that uspp is GPL 2014-12-12 01:52:20 +01:00
Michael Niedermayer
21c0c0f9d4 LICENSE.md: Add tests/reference.pnm 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-11-30 19:12:22 +01:00
Arwa Arif
a2f05d3337 lavfi : change xBR filter to LGPL 
Hyllian's message : "Hi, Put lgpl on this and use it as you wish. It's free!"

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-11-15 18:54:54 +01:00
Arwa Arif
19d0949d31 lavfi: add xbr filter xBR 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-11-10 03:45:00 +01:00
Michael Niedermayer
7771daaea7 Merge commit '9e8bbe7d4d1dcd5fec491dbfbb98ed2038a7bed5' 
* commit '9e8bbe7d4d1dcd5fec491dbfbb98ed2038a7bed5':
  license: Mention that vf_interlace is GPL, not LGPL

Conflicts:
	LICENSE.md

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-08-29 01:08:57 +02:00
James Darnley
0081a14e7d lavc/flacenc: add sse4 version of the 16-bit lpc encoder 
From 1.8 to 2.4 times faster.  Runtime is reduced by 2 to 39%.  The
speed-up generally increases with compression_level.

This lpc encoder is not used with levels < 3 so it provides no speed-up
in these cases.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-08-13 01:14:47 +02:00
Konrad Iturbe
50f4d0bb50 LICENCE: add markdown syntax 
Reviewed-by: llogan
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-28 22:38:28 +02:00