# Error using plot

**URL:** <https://discourse.julialang.org/t/error-using-plot/28847>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [September 17, 2019, 1:29pm UTC](https://discourse.julialang.org/t/error-using-plot/28847 "2019-09-17T13:29:02Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![zikri\_alhamdi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/zikri_alhamdi/32/10329_2.png) [@zikri\_alhamdi](https://discourse.julialang.org/u/zikri_alhamdi)\
**Post date:** [September 17, 2019, 1:29pm UTC](https://discourse.julialang.org/t/error-using-plot/28847/1 "2019-09-17T13:29:02Z")

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julia\> using Plots  
[Info: Precompiling Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80]  
ERROR: LoadError: UndefVarError: ffmpeg not defined  
Stacktrace:  
[1] top-level scope at C:\Users\Lenovo.julia\packages\FFMPEG\9JQpZ\src\FFMPEG.jl:55  
[2] include at .\boot.jl:328 [inlined]  
[3] include\_relative(::Module, ::String) at .\loading.jl:1094  
[4] include(::Module, ::String) at .\Base.jl:31  
[5] top-level scope at none:2  
[6] eval at .\boot.jl:330 [inlined]  
[7] eval(::Expr) at .\client.jl:432  
[8] top-level scope at .\none:3  
in expression starting at C:\Users\Lenovo.julia\packages\FFMPEG\9JQpZ\src\FFMPEG.jl:55  
ERROR: LoadError: Failed to precompile FFMPEG [c87230d0-a227-11e9-1b43-d7ebe4e7570a] to C:\Users\Lenovo.julia\compiled\v1.2\FFMPEG\TGvga.ji.  
Stacktrace:  
[1] error(::String) at .\error.jl:33  
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1253  
[3] \_require(::Base.PkgId) at .\loading.jl:1013  
[4] require(::Base.PkgId) at .\loading.jl:911  
[5] require(::Module, ::Symbol) at .\loading.jl:906  
[6] include at .\boot.jl:328 [inlined]  
[7] include\_relative(::Module, ::String) at .\loading.jl:1094  
[8] include(::Module, ::String) at .\Base.jl:31  
[9] top-level scope at none:2  
[10] eval at .\boot.jl:330 [inlined]  
[11] eval(::Expr) at .\client.jl:432  
[12] top-level scope at .\none:3  
in expression starting at C:\Users\Lenovo.julia\packages\Plots\Ih71u\src\Plots.jl:11  
ERROR: Failed to precompile Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80] to C:\Users\Lenovo.julia\compiled\v1.2\Plots\ld3vC.ji.  
Stacktrace:  
[1] error(::String) at .\error.jl:33  
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1253  
[3] \_require(::Base.PkgId) at .\loading.jl:1013  
[4] require(::Base.PkgId) at .\loading.jl:911  
[5] require(::Module, ::Symbol) at .\loading.jl:906

---

<div class="post-metadata">

**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [September 17, 2019, 1:32pm UTC](https://discourse.julialang.org/t/error-using-plot/28847/2 "2019-09-17T13:32:09Z")

</div>

You may be running into

[https://github.com/JuliaIO/FFMPEG.jl/issues/12](https://github.com/JuliaIO/FFMPEG.jl/issues/12)

which is an issue with FFMPEG.