Notaku and Notion support a variety of video sources

From youtube

You can embed videos from youtube, simply by pasting the youtube url on Notion and clicking "Embed video"
Video on youtube

Video file

You can also embed a video dropping a local file on Notion
Video file

Gif file

Notaku supports GIFs as well (keep in mind GIFs are more heavy than videos and videos are always preferred
Gif of my personal logo
Gif of my personal logo

Loom video

loom video

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