It has been ported to libavfilter.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Prompted-by: Carl Oxwall <@oxwall>
Signed-off-by: Lou Logan <lou@lrcd.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Previous version reviewed by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Using colons to separate the outdefs is deprecated. Switch to using '|'
to separate the list items.

Signed-off-by: Simon Thelen <ffmpeg-dev@c-14.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This can be useful for determining telecine.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This can be useful for videos in which the interlacing pattern changes.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket 3832

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The fieldmatch filter has no problem with mixed telecined and
progressive content but the decimate filter does not detect the
changing framerate and drops progressive frames.

This can be improved in the decimate filter but for the moment
explicitely mentioning that mixed telecined and progressive
content is unsupported is an improvement.

Fixes ticket #3968.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Nicholas Robbins <nickrobbins@yahoo.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The colon after the localtime function call needs an additional layer of
escaping or else everything until the next colon is treated as a
fontfile.

Signed-off-by: Simon Thelen <ffmpeg-dev@c-14.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Also create an anchor for the unsharp filter, and references to
it in its mentions.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Lou Logan <lou@lrcd.com>

Fixes Ticket #4008.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Radial gradient by Víctor Paesa. Linear gradient by Paul Gentemann.

Also-by: Víctor Paesa <victorpaesa@googlemail.com>
Also-by: Paul Gentemann <beriukay@gmail.com>
Signed-off-by: Lou Logan <lou@lrcd.com>

The documentation is mostly based on ass.h public header.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Make time duration references consistent, using @ref links, and
eliminate incorrect syntax [-]HH[:MM[:SS[.m...]]].

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fix trac issue #3850.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Add a tlength option with frequency and timeclamp variable

Add to the volume option support for frequency and timeclamp variable,
   a_weighting, b_weighting and c_weighting functions

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

8x8 is about 5x faster than 16x16 on 1080p input. Since a block size of
8x8 makes the filter almost usable (time wise) and it's not obvious if
8x8 or 16x16 is better from a quality PoV (it really depends on the
input and parameters), the filter now defaults to 8x8, and as a result
libavfilter is micro bumped.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit 35b05c5184.
A warning is introduced in case this option is used.

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Allow to dynamically evaluate the font color.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

It evaluates expression and outputs it as integer value, using specified
format.

Address trac ticket #3699.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Fixes ticket #3758

Reviewed-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>