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Merge pull request #1185 from H-M-H/animation_fix

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Use ffmpeg & palette to create gifs, closes #1050
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Michael Krabbe Borregaard 2017-10-18 22:28:56 +02:00 committed by GitHub
commit 9c46509f84
1 changed files with 4 additions and 24 deletions
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28
src/animation.jl
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@ -64,35 +64,15 @@ gif(anim::Animation, fn = giffn(); kw...) = buildanimation(anim.dir, fn; kw...)
mov(anim::Animation, fn = movfn(); kw...) = buildanimation(anim.dir, fn; kw...) mov(anim::Animation, fn = movfn(); kw...) = buildanimation(anim.dir, fn; kw...)
mp4(anim::Animation, fn = mp4fn(); kw...) = buildanimation(anim.dir, fn; kw...) mp4(anim::Animation, fn = mp4fn(); kw...) = buildanimation(anim.dir, fn; kw...)
const _imagemagick_initialized = Ref(false)
function buildanimation(animdir::AbstractString, fn::AbstractString; function buildanimation(animdir::AbstractString, fn::AbstractString;
fps::Integer = 20, loop::Integer = 0) fps::Integer = 20, loop::Integer = 0)
fn = abspath(fn) fn = abspath(fn)
try
if !_imagemagick_initialized[]
file = joinpath(Pkg.dir("ImageMagick"), "deps","deps.jl")
if isfile(file) && !haskey(ENV, "MAGICK_CONFIGURE_PATH")
include(file)
end
_imagemagick_initialized[] = true
end
# prefix = get(ENV, "MAGICK_CONFIGURE_PATH", "") # generate a colorpalette first so ffmpeg does not have to guess it
# high quality run(`ffmpeg -v 0 -i $(animdir)/%06d.png -vf palettegen -y palette.png`)
speed = round(Int, 100 / fps) # then apply the palette to get better results
run(`convert -delay $speed -loop $loop $(joinpath(animdir, "*.png")) -alpha off $fn`) run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -i palette.png -lavfi paletteuse -y $fn`)
catch err
warn("""Tried to create gif using convert (ImageMagick), but got error: $err
ImageMagick can be installed by executing `Pkg.add("ImageMagick")`.
You may also need to install the imagemagick c++ library through your operating system.
Will try ffmpeg, but it's lower quality...)""")
# low quality
run(`ffmpeg -v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -y $fn`)
# run(`ffmpeg -v warning -i "fps=$fps,scale=320:-1:flags=lanczos"`)
end
info("Saved animation to ", fn) info("Saved animation to ", fn)
AnimatedGif(fn) AnimatedGif(fn)