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Stefan Westerfeld
ffmpeg
Commits
dea673d0
Commit
dea673d0
authored
Oct 13, 2021
by
Soft Works
Committed by
Paul B Mahol
Oct 13, 2021
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avfilter/vf_palette(gen|use): support palettes with alpha
parent
3ee72501
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filters.texi
doc/filters.texi
+8
-0
vf_palettegen.c
libavfilter/vf_palettegen.c
+93
-43
vf_paletteuse.c
libavfilter/vf_paletteuse.c
+130
-95
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doc/filters.texi
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dea673d0
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@@ -16580,6 +16580,9 @@ Compute new histogram for each frame.
@end table
Default value is @var{full}.
@item use_alpha
Create a palette of colors with alpha components.
Setting this, will automatically disable 'reserve_transparent'.
@end table
The filter also exports the frame metadata @code{lavfi.color_quant_ratio}
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@@ -16658,6 +16661,11 @@ will be treated as completely opaque, and values below this threshold will be
treated as completely transparent.
The option must be an integer value in the range [0,255]. Default is @var{128}.
@item use_alpha
Apply the palette by taking alpha values into account. Only useful with
palettes that are containing multiple colors with alpha components.
Setting this will automatically disable 'alpha_treshold'.
@end table
@subsection Examples
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libavfilter/vf_palettegen.c
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dea673d0
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libavfilter/vf_paletteuse.c
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