OBS Studio - Global Browser Source (Downstream Keyer)

globalbrowsersource.lua

ffi           = require "ffi"
obs           = obslua
globalSource  = nil -- Null pointer

outputIndex = 63 -- Last index

function script_description()
	return "Plays a media source as a global source.\nSelect a file, reload the script and enjoy."
end

function script_properties()
    local props = obs.obs_properties_create()
    obs.obs_properties_add_text(props, "url", "URL", obs.OBS_TEXT_DEFAULT)
    obs.obs_properties_add_int(props, "width", "Width", 1, 4096, 1);
    obs.obs_properties_add_int(props, "height", "Height", 1, 4096, 1);
    obs.obs_properties_add_int(props, "fps", "FPS", 1, 60, 1);
    obs.obs_properties_add_text(props, "css", "Additional CSS", obs.OBS_TEXT_MULTILINE)
    return props
end

function script_defaults(settings)
    obs.obs_data_set_default_string(settings, "url", "https://www.google.com")
    obs.obs_data_set_default_int(settings, "width", 1280)
    obs.obs_data_set_default_int(settings, "height", 720)
    obs.obs_data_set_default_int(settings, "fps", 30)
    obs.obs_data_set_default_string(settings, "css", "body { background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden; }")
end

function script_load(settings)
    local sourceSettings = obs.obs_data_create()
    obs.obs_data_set_string(sourceSettings, "url", obs.obs_data_get_string(settings, "url"))
    obs.obs_data_set_int(sourceSettings, "width", obs.obs_data_get_int(settings, "width"))
    obs.obs_data_set_int(sourceSettings, "height", obs.obs_data_get_int(settings, "height"))
    obs.obs_data_set_int(sourceSettings, "fps", obs.obs_data_get_int(settings, "fps"))
    obs.obs_data_set_string(sourceSettings, "css", obs.obs_data_get_string(settings, "css"))
    globalSource = obs.obs_source_create_private("browser_source", "Global Browser Source", sourceSettings)
    obs.obs_data_release(sourceSettings)

    obs.obs_set_output_source(outputIndex, globalSource)
end

function script_unload()
    obs.obs_set_output_source(outputIndex, nil)
    obs.obs_source_release(globalSource)
end