Lua script for Advanced Scene Switcher (on OBS) to make the video scale fully to "Display Capture"

.lua

local obs = obslua
local WIDTH_OFFSET_BEFORE = 0
local WIDTH_OFFSET_AFTER = 0
local HEIGHT_OFFSET_BEFORE = 120
local HEIGHT_OFFSET_AFTER = 0

function run()
    local source = obs.obs_frontend_get_current_scene()
    local scene = obs.obs_scene_from_source(source)
    local sceneitem = obs.obs_scene_find_source(scene,"Display Capture")
    obs.obs_source_release(source)

    local source = obs.obs_sceneitem_get_source(sceneitem)
    local width = obs.obs_source_get_width(source)
    local height = obs.obs_source_get_height(source)

    config = obs.obs_frontend_get_profile_config()
    local total_width =  width + WIDTH_OFFSET_BEFORE + HEIGHT_OFFSET_AFTER
    local total_height = height + HEIGHT_OFFSET_BEFORE + HEIGHT_OFFSET_AFTER
    obs.config_set_uint(config, "Video", "BaseCX", total_width)
    obs.config_set_uint(config, "Video", "BaseCY", total_height)
    obs.config_set_uint(config, "Video", "OutputCX", total_width)
    obs.config_set_uint(config, "Video", "OutputCY", total_height)
    obs.obs_frontend_reset_video()
    obs.config_save(config)

    local transform_info = obs.obs_transform_info()
    obs.vec2_set(transform_info.scale, 1, 1)
    obs.vec2_set(transform_info.pos, WIDTH_OFFSET_BEFORE, HEIGHT_OFFSET_BEFORE)
    transform_info.alignment = 5 -- OBS_ALIGN_LEFT | OBS_ALIGN_TOP
    obs.obs_sceneitem_set_info2(sceneitem, transform_info)

    --obs.script_log(obs.LOG_WARNING, tostring(obs.config_get_uint(config, "Video", "BaseCY")))
    return true
end