Artworks that serve as thumbnails for videos in external platforms (e.g. [[YouTube]], NicoNico, bilibili). This tag should only be used in one of the following cases:
[b]1.[/b] The original artist themselves created a video using their own illustration (e.g. post #6849506 and post #5598651)
[b]2.[/b] Someone directly commissioned an artist to create the picture for their video (so they were granted permission to use it as a thumbnail) (e.g. post #6766229)

There must be proof that the image is a thumbnail of a real video, namely:
A. The video is directly linked in the [i]source field[/i] (e.g. post #6278828)
B. The artist linked the video URL in the [i]commentary field[/i] (e.g. post #6582857)
C. By posting a [i]comment[/i] (e.g. post #6813221)

This tag should not be used for [[parody|parodies]] of actual video thumbnails (which means things like post #6515886 and post #6467103 do not qualify for this tag)

For posts that depict the User Interface of video platforms or made-up videos, use [[fake video]] (e.g. post #7159298)