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Update animation.jl

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Changed palette for each frame to an option, made the default palette a lossless bmp file for best quality/filesize, but still compatible with FFMPEG 3.4 on Win7 x64
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biggsbiggsby 2017-11-17 12:35:36 +01:00 committed by GitHub
parent cf58f3cbf2
commit ee0f4e11ea
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1 changed files with 12 additions and 4 deletions
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src/animation.jl
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@ -67,13 +67,21 @@ mp4(anim::Animation, fn = mp4fn(); kw...) = buildanimation(anim.dir, fn, false;
function buildanimation(animdir::AbstractString, fn::AbstractString,
is_animated_gif::Bool=true;
fps::Integer = 20, loop::Integer = 0)
fps::Integer = 20, loop::Integer = 0,
variable_palette::Bool=false)
fn = abspath(fn)
if is_animated_gif
# generate a colorpalette for each frame to improve quality
palette="palettegen=stats_mode=single[pal],[0:v][pal]paletteuse=new=1"
run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -lavfi "$palette" -y $fn`)
if variable_palette
# generate a colorpalette for each frame for highest quality, but larger filesize
palette="palettegen=stats_mode=single[pal],[0:v][pal]paletteuse=new=1"
run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -lavfi "$palette" -y $fn`)
else
# generate a colorpalette first so ffmpeg does not have to guess it
run(`ffmpeg -v 0 -i $(animdir)/%06d.png -vf "palettegen=stats_mode=diff" -y "$(animdir)/palette.bmp"`)
# then apply the palette to get better results
run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -i "$(animdir)/palette.bmp" -lavfi "paletteuse=dither=sierra2_4a" -y $fn`)
end
else
run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -pix_fmt yuv420p -y $fn`)
end