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Use FFMPEG.jl for video encoding #2099

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Jul 13, 2019
Merged

Use FFMPEG.jl for video encoding #2099

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9075e77
add FFMPEG as a project dependency
asinghvi17 Jul 13, 2019
b0241e1
run(`ffmpeg ...`) -> ffmpeg_exe(`...`)
asinghvi17 Jul 13, 2019
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1 change: 1 addition & 0 deletions Project.toml
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Expand Up @@ -7,6 +7,7 @@ version = "0.25.3"
Base64 = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
Contour = "d38c429a-6771-53c6-b99e-75d170b6e991"
Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
FFMPEG = "c87230d0-a227-11e9-1b43-d7ebe4e7570a"
FixedPointNumbers = "53c48c17-4a7d-5ca2-90c5-79b7896eea93"
GR = "28b8d3ca-fb5f-59d9-8090-bfdbd6d07a71"
GeometryTypes = "4d00f742-c7ba-57c2-abde-4428a4b178cb"
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2 changes: 2 additions & 0 deletions src/Plots.jl
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Expand Up @@ -8,6 +8,8 @@ import GeometryTypes
using Dates, Printf, Statistics, Base64, LinearAlgebra, Random
import SparseArrays: findnz

using FFMPEG

@reexport using RecipesBase
import RecipesBase: plot, plot!, animate
using Base.Meta
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8 changes: 4 additions & 4 deletions src/animation.jl
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Expand Up @@ -76,15 +76,15 @@ function buildanimation(animdir::AbstractString, fn::AbstractString,
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`)
ffmpeg_exe(`-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"`)
ffmpeg_exe(`-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`)
ffmpeg_exe(` -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`)
ffmpeg_exe(`-v 0 -framerate $fps -loop $loop -i $(animdir)/%06d.png -pix_fmt yuv420p -y $fn`)
end

show_msg && @info("Saved animation to ", fn)
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