apply --filter to the .conf file (download videos or images only)

[dokax]

this filter: https://github.com/mikf/gallery-dl/issues/5388

How to apply --filter to the .conf file so that each extractor has a different filter? Let some extractors only download images and some only download videos.

[mikf]

{
    "extractor": {
        "danbooru": {
            "image-filter": "extension in ('mp4', 'mkv', 'm4v','avi')"
        },
        "gelbooru": {
            "image-filter": "extension in ('jpg', 'png', 'gif', 'webp')"
        },
        "other category": {
            "image-filter": "..."
        }
    }
}

You can get the category values with gallery-dl -E "URL"