[pixiv] Single artwork URL does not fire "artworks" postprocessor

[AlttiRi]

If I download a single illustration URL (like this https://www.pixiv.net/en/artworks/99366671) then

        "pixiv": {
            "artworks": {
                "postprocessors": [{ 

does not work.

---

The full Pixiv config:

        "postprocessors": [
            {
                "whitelist": ["pixiv"],
                "name": "mtime",
                "event": "file,post"
            },
            {
                "whitelist": ["pixiv"],
                "name": "ugoira",
                "ffmpeg-args": ["-c:v", "libvpx", "-crf", "4", "-b:v", "5000k", "-hide_banner", "-loglevel", "error"],
                "ffmpeg-twopass": true,
                "keep-files": false,
                "mtime": true
            }
        ],

        "pixiv":
        {
            "tags": "translated",
            "directory": ["[gallery-dl]", "[{category}] {user[id]}—{user[name]}"],
            "filename": "[{category}] {user[id]}—{id}—{user[name]}—{date:%Y.%m.%d}—{title}—{num}.{extension}",
            "include": ["background", "artworks"],
            "background": {
                "filename" : "[{category}][bg] {user[id]}—{user[name]}—{date:?//%Y.%m.%d}—{filename[-32:]}.{extension}"
            },
            "avatar": {
                "filename" : "[{category}][ava] {user[id]}—{user[name]}—{date:?//%Y.%m.%d}—{filename[-32:]}.{extension}"
            },
            "artworks": {
                "postprocessors": [{
                    "mtime": true,
                    "directory": "metadata",
                    "filename": "[{category}] {user[id]}—{id}—{user[name]}—{date:%Y.%m.%d}—{title}.html",
                    "name": "metadata",
                    "mode": "custom",
                    "format": "<div id='{id}'><h4><a href='https://www.pixiv.net/artworks/{id}'>{title}</a> by <a href='https://www.pixiv.net/users/{user[id]}'>{user[name]}</a></h4><div class='content'>{caption}</div><hr><div>{user[id]}—{id}—{date:%Y.%m.%d %H:%M:%S}{frames[0][delay]:?<br>Ugoira delay: / ms/}</div><hr><div class='tags'>[\"{tags:J\", \"}\"]</div><hr></div>"
                }]
            }
        },

Downloading a profile URL (https://www.pixiv.net/en/users/7586319) works OK.

I put the meta postprocessor in "artworks.postprocessors" since I don't need to run it on "background" event.

[AlttiRi]

BTW, what's about to use mtime postprocessor for --ugoira-conv like it is in my config above?

[mikf]

The subcategory for single illustration is work, as it has been for a long time.
artworks is for https://www.pixiv.net/en/users/ID/artworks and was introduced only recently when splitting the user extractor to have better control over avatar/background.

$ gallery-dl -E https://www.pixiv.net/en/artworks/99366671
Category / Subcategory
  "pixiv" / "work"

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BTW, what's about to use mtime postprocessor for --ugoira-conv like it is in my config above?

Good idea.