Record animation to mp4 with WGLMakie

Specific Domains Visualization
1

I have a )I think) very simple problem, that I have tried to find a solution for for a long time today. I always run into the same error message no matter what.

I am in a Pluto notebook and I am using WGLMakie for plots. Pluto says I am on WGLMakie v0.10.14. Now, in some of my old codes (with GLMakie) I figured out (also a longish steep learning curve) how to record something with record

But If I do a Pluto cell with

begin
	using WGLMakie
	t = 0:0.01:1
	print(length(t))
	x = Observable(sin.(2π .* t))
	fig, ax, plt = plot(t,x)
	record(fig, "test.mp4", 1:50, framerate = 10) do i
        x[] = sin.( 2π .* 1/i .* t)
    end
end

I can do also the tips from this old thread but the only thing I get is

MethodError: no method matching wait_for_ready(::Nothing)
The function `wait_for_ready` exists, but no method is defined for this combination of argument types.

even when including the yield. Is there any easy way to record an animation as mp4 with WGLMakie?

2

Try putting the record into another Pluto cell. Let the plot render before you try to record it.

3

Just moving the record to a next cell at least changes the error message and sounds a bit like I miss some understanding of how observables work :wink:

So with

begin
	using WGLMakie
	t = 0:0.01:1
	print(length(t))
	x = Observable(sin.(2π .* t))
	fig, ax, plt = plot(t,x)
end

and a separate cell for

record(fig, "test.mp4", 1:50, framerate = 10) do i
     x[] = sin.( 2π .* 1/i .* t)
end

yields

BoundsError: attempt to access 600×450 Array{RGB{N0f8},2} with eltype ColorTypes.RGB{FixedPointNumbers.N0f8} at index [1:1200, 1:900]

edit: With GLMakie with works perfectly find, though.

edit2: Ah that error was maybe just a file that did not exist. If I now provide a file that does exist (i.e. that I can write to) I get the same error as in the original post.