raco video without Gtk

[vielleicht]

Hi there...

Is it possible to run the raco video command without preview in a console to have it render a video DSL file? So I would like to run the rendering on a headless server...

raco video -o Test.mp4 Test.vid gives:

Gtk initialization failed for display ":0"\
    context...:  
    "/usr/share/racket/pkgs/gui-lib/mred/private/wx/gtk/queue.rkt": [running body]
    temp37_0
    for-loop
    run-module-instance!125
    for-loop
    [repeats 1 more time]
    run-module-instance!125
    for-loop
    [repeats 1 more time]
    run-module-instance!125
    do-dynamic-require5
    "/usr/share/racket/pkgs/gui-lib/mred/private/wx/platform.rkt": [running body]
    temp37_0
    for-loop
    run-module-instance!125
    for-loop
    ...```

As I'm very interested in using video language, it would be very helpful to get a solution.

[LeifAndersen]

Thanks for trying out video.

I've pushed a patch to the master branch so that gtk is only required if you use the -p option in raco video. Does that work for you?

As a side note, I recommend checking out xvfb-run run. It allows you to hook up programs to a virtual buffer, and thus run gui programs on a headless server.

[vielleicht]

Thanks for the quick reply.

I installed the racket-video after cloning master, but now raco video throws me video: MLT Not Installed. MLT 6.18.0-2 is installed.

Any further guidance, please?

[LeifAndersen]

That's...odd. Video hasn't used MLT for years now. I wonder if there's an old version installed?

When you run:

> (require video/version)
> (version)

What version string comes out?