| Commit message (Collapse) | Author | Age |
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Current code divides before increasing precision.
Also reduce upper bound for strength from 255 to 64. This will prevent
an overflow in the SSSE3 and MMX filter_line code: delta is expressed as
an u16 being shifted by 2 to the left. If it overflows, having a
strength not above 64 will make sure that m is set to 0 (making the
m*m*delta >> 14 expression void).
A value above 64 should not make any sense unless gradfun is used as
a blur filter.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Deprecate AVFilterBuffer/AVFilterBufferRef and everything related to it
and use AVFrame instead.
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
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Note the time base for the option. Add an additional example description.
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Based on the volume filter in FFmpeg written by Stefano Sabatini
<stefasab@gmail.com>.
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The following commit will make it useless.
The crop_scale_vflip FATE test changes because of off-by-one differences
in output when vflipped slices are passed to sws.
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Also reorder some other #include when applicable.
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It can be useful for debugging.
Based on a patch by Stefano Sabatini <stefano.sabatini-lala@poste.it>
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The tag @table expects @item to mark entries.
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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This allows for padding/trimming at the start of stream. By default, no
assumption is made about the first frame's expected pts, so no padding or
trimming is done.
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Inspired by MPlayer's af_channels filter and SoX's remix effect.
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It joins multiple input streams into one multi-channel output.
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Based on current version of the asplit filter in FFmpeg written by
Stefano Sabatini and others.
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Partially based on a patch by Robert Nagy <ronag89@gmail.com>
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Based on a patch by Mina Nagy Zaki <mnzaki@gmail.com>
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Also add the public interface libavfilter/buffersink.h.
Based on a commit by Stefano Sabatini.
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Before, drawtext filter deliberately altered given text coordinates if
text didn't fully fit on the picture. This breaks the use case of
scrolling large text, e.g. movie closing credits.
Add 'fix_bounds', to make it usable in such cases (by setting its value to 0).
Default behavior is not changed, and non-fitting text coords are fixed.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Introduce variables "E", "PHI", "PI", "main_w"/"W", "main_h"/"H",
"text_w"/"w", "text_h"/"h", "x", "y", "n" and "t" in line with
vf_overlay and refactor the code accordingly.
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Use the @command{} tag when needed and cleanup the examples.
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The licence was changed from GPL to LGPL with explicit approval from
the original author.
See thread:
Subject: [FFmpeg-devel] [PATCH] lavfi: add rgbtestsrc source,
ported from MPlayer libmpcodecs
Date: Mon, 11 Jul 2011 16:32:41 +0200
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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The ported filter supports named option parsing and more YUV formats.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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With the following additions:
* support to gray format
* support to yuva420p format
* parametric luma/chroma/alpha radius
* consistency check on the radius values, avoid crashes with invalid values
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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