Use FFMPEG.jl to provide ffmpeg

Closes #121

.travis.yml

@@ -36,16 +36,6 @@ branches:
   only:
     - master
 
-addons:
-  apt:
-    sources:
-      - trusty-media
-    packages:
-      - ffmpeg
-
-before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install ffmpeg; fi
-
 script:
   - julia --color=yes -e "using Pkg; if VERSION >= v\"1.1.0-rc1\"; Pkg.build(verbose=true); else Pkg.build(); end"
   - $TESTCMD --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test("MeshCat", coverage=true)'

Project.toml

@@ -11,6 +11,7 @@ Cassette = "7057c7e9-c182-5462-911a-8362d720325c"
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
 CoordinateTransformations = "150eb455-5306-5404-9cee-2592286d6298"
 DocStringExtensions = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
+FFMPEG = "c87230d0-a227-11e9-1b43-d7ebe4e7570a"
 GeometryTypes = "4d00f742-c7ba-57c2-abde-4428a4b178cb"
 JSExpr = "97c1335a-c9c5-57fe-bc5d-ec35cebe8660"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"

src/MeshCat.jl

@@ -6,6 +6,7 @@ using WebIO
 import Mux
 import AssetRegistry
 import Cassette
+import FFMPEG
 using GeometryTypes, CoordinateTransformations
 using Rotations: rotation_between, Rotation, Quat
 using Colors: Color, Colorant, RGB, RGBA, alpha, hex

src/animations.jl

@@ -74,15 +74,15 @@ function convert_frames_to_video(tar_file_path::AbstractString, output_path::Abs
 
     mktempdir() do tmpdir
         run(unpack_cmd(tar_file_path, tmpdir, ".tar", nothing))
-        cmd = `ffmpeg -r $framerate -i %07d.png -vcodec libx264 -preset slow -crf 18`
+        cmd = `$(FFMPEG.ffmpeg) -r $framerate -i %07d.png -vcodec libx264 -preset slow -crf 18`
         if overwrite
             cmd = `$cmd -y`
         end
         cmd = `$cmd $output_path`
 
         cd(tmpdir) do
             try
-                run(cmd)
+                FFMPEG.@ffmpeg_env run(cmd)
             catch e
                 println("""
 Could not call `ffmpeg` to convert your frames into a video.